Entries |
Document | Title | Date |
20080198078 | Adjusting Resonance Frequency by Adjusting Distributed Inter-Turn Capacity - The invention concerns a method for adjusting frequency tuning of a resonant circuit with turns having a regular spacing generating stray inter-turn capacity. The adjusting of the frequency tuning of the resonant circuit is performed, at the level of the stray inter-turn capacity, by varying the regular spacing of adjacent turns on at least one zone of the antenna. The invention uses this adjusting method for producing an adjusted antenna for a resonant circuit, the resonant circuit and a non-contact product. The invention concerns a device programmed for antenna production and/or definition. | 08-21-2008 |
20080258984 | Antenna, and wireless module, wireless unit and wireless apparatus having the antenna - In an antenna that has high sensitivity to frequencies of narrow bands and over a wide band and that can be small-sized, and in a wireless module, wireless unit and wireless apparatus using this antenna, the antenna is comprised of a transmission line, and variable capacitance means connected to this transmission line, and the variable capacitance means controls the resonant frequency. | 10-23-2008 |
20080278392 | EXTREMELY MINIATURIZED DIGITAL ANTENNA HAVING SWITCHABLE MULTIPLE BANDWIDTHS - An extremely miniaturized digital TV signal reception antenna built in a mobile device includes a substrate, an antenna unit and a switch unit. The substrate is provided with a plate having a grounding metallic surface and a first clearance surface. A second clearance surface is provided on the same side of the grounding metallic surface with a metallic microstrip line for electrically connecting to an output end of the switch unit. Input ends of the switch unit are electrically connected with a plurality of leads of the first clearance surface. The other ends of the plurality of leads are electrically connected with the antenna unit. Finally, when a tuner of a portable digital television switches the channels, signals of the switched channel are simultaneously output to the switch unit. According to the frequency of that channel, the switch unit automatically switches to a suitable range of bandwidth for receiving the digital TV signals, thereby performing the reception of the digital TV signals. | 11-13-2008 |
20080309567 | Hand Held Reader Antenna for RFID and Tire Pressure Monitoring System - An antenna assembly that has particular application for a hand held reader that interrogates sensors embedded within a vehicle tire, such as RFID sensors and tire pressure sensors. In one embodiment, the antenna assembly includes a first antenna operating in the 432-435 MHz range that employs a meander-line slot that provides increased antenna cross-polarization so that the sensor can be interrogated regardless of the antenna orientation and polarization. The antenna assembly also includes two RFID antennas that operate in the 902-928 MHz range that are planar antenna that make the antenna bi-directional, polarization free and a wide enough bandwidth for the RFID interrogation. | 12-18-2008 |
20080316129 | Transponder Tuning Method and a Transponder - Tuning an antenna circuit that includes an inductance of a resonance circuit, and a component having a component impedance. The antenna circuit includes multiple connection areas for connecting the component to the antenna circuit. At least two of the multiple of connection areas are part of the resonance circuit. The tuning can be performed by selecting at least one connection area for the component among the at least two of the multiple connection areas. | 12-25-2008 |
20090040123 | FREQUENCY RECONFIGURATION ARRAY ANTENNA AND ARRAY DISTANCE CONTROL METHOD - A frequency reconfiguration array antenna includes a first metal plate, and a first antenna element formed on the first metal plate and reconfiguring a frequency. An array antenna includes a second metal plate and a second antenna element formed on the second metal plate and reconfiguring a frequency. Further, the array antenna includes a connection plate being bent to connect the first metal plate and the second metal plate, and being bent to change the distance between the first metal plate and the second metal plate according to the frequency of the first and second antenna elements. | 02-12-2009 |
20090051610 | TUNABLE ANTENNA MODULE WITH FREQUENCY CORRECTION CIRCUIT AND MANUFACTURING METHOD THEREOF - A tunable antenna module with frequency correction circuit having an antenna element, a variable capacity means connected to the antenna element, and a frequency control source that generates a controlling voltage for varying the capacity of the variable capacity means to vary a tuning frequency according to the frequency of radio wave received by the antenna element. The module further has a voltage divider circuit comprised of resisters for dividing the controlling voltage, and connected between the frequency control source and the variable capacity means. The tuning frequency is corrected by the voltage divider circuit. | 02-26-2009 |
20090079643 | DUAL-BAND ANTENNA - A dual-band antenna has a first meandering portion, a second meandering portion and a connection portion defining two ends. The first meandering portion and the second meandering portion have different length. One end of the first meandering portion connects one end of the second meandering portion. The other end of the first meandering portion connects one end of the connection portion. The other end of the second meandering portion connects a feeding portion. The other end of the connection portion connects a ground portion. The feeding portion, the second meandering portion, the first meandering portion and the connection portion obtain an electrical resonance corresponding to a first frequency range. The second meandering portion obtains an electrical resonance corresponding to a second frequency range. | 03-26-2009 |
20090102732 | ANTENNA WITH SERIES STUB TUNING - An antenna may include a conductive material formed in a pattern on an antenna housing, where one end of the conductive material connects to a ground connection. The antenna may further include a tuning stub, having a length (l | 04-23-2009 |
20090109106 | SURFACE-MOUNT ANTENNA AND ANTENNA DEVICE - A ground electrode is formed on the lower surface of a ferroelectric substrate, a control electrode including capacitor electrodes and an inductor electrode is formed on the upper surface of the ferroelectric substrate, and an upper-surface radiating electrode and an end-surface radiating electrode are formed on a paraelectric substrate. The shapes and dimensions of the ferroelectric substrate, paraelectric substrate, and radiating electrodes are determined such that when the ferroelectric substrate and the paraelectric substrate are stacked in layers, a circuit including the radiating electrodes resonates at frequencies outside a frequency band exhibiting frequency dispersion of a dielectric constant. | 04-30-2009 |
20090115674 | ANTENNA DEVICE AND WIRELESS COMMUNICATION APPARATUS - An antenna device and a wireless communication apparatus that are capable of obtaining a plurality of resonant frequencies and varying the plurality of resonant frequencies over a wide range are provided. A first antenna unit of an antenna device includes a feed electrode, a first radiation electrode, and a first frequency-variable circuit. The first frequency-variable circuit includes first and second reactance circuits each including a variable-capacitance diode. A control voltage is applied to the first frequency-variable circuit, and the resonant frequency of the first antenna unit can thus be varied. A second antenna unit includes the feed electrode, a second radiation electrode, and a second frequency-variable circuit. The second frequency-variable circuit includes first and third reactance circuits each including a variable-capacitance diode. A control voltage is applied to the second frequency-variable circuit, and the resonant frequency of the second antenna unit can thus be varied. | 05-07-2009 |
20090121951 | TUNABLE MICROSTRIP DEVICES - Tunable microstrip devices formed by capacitively coupled conductive strips are disclosed. Device parameters can be tuned by adjusting corresponding lengths of a resonator and a coupling section of the device by connecting one or more auxiliary segments to the conductive strips. | 05-14-2009 |
20090146890 | USING COULOMB FORCES TO FORM 3-D RECONFIGURABLE STRUCTURES - Coulomb forces are used to create various metallic shapes within substrates. These shapes are formed by coupling a plurality of substrates together where each substrate contains a metallic pattern. The substrates are assembled together on a mother substrate and the substrates can be positioned either parallel to a planar surface or perpendicular to an edge of the mother substrate. Thus, metallic shapes can be formed that are orthogonal to each other. Such a capability is a desirable feature for antenna construction. The various metal shapes can be used to construct: dipole, patch, Yagi, monopole, bow-tie, meanderline and MIMO antennas. Furthermore, the antenna can be reassembled to adjust the physical dimensions of the antenna while in the consumer product to better match the antenna to a different frequency band. | 06-11-2009 |
20090146891 | Method and Related Electronic Device for Adjustment of a Radio Frequency Circuit by Impedance Loading Features - A method for adjustment of a radio-frequency circuit by impedance loading features includes designing a plurality of test fixtures each corresponding to an impedance loading area according to a predefined operating frequency band, coupling each of the plurality of test fixtures to a test point of the radio-frequency circuit for measuring a plurality of radio-frequency characteristic sets, determining an optimal impedance loading area of the radio-frequency circuit according to the plurality of radio-frequency characteristic sets, and adjusting the radio-frequency circuit according to the optimal impedance loading area. | 06-11-2009 |
20090146892 | NON-CONTACT WIRELESS COMMUNICATION APPARATUS, METHOD OF ADJUSTING RESONANCE FREQUENCY OF NON-CONTACT WIRELESS COMMUNICATION ANTENNA, AND MOBILE TERMINAL APPARATUS - A non-contact wireless communication apparatus and a mobile terminal apparatus are provided. The non-contact wireless communication apparatus includes a non-contact wireless communication antenna, a resonance capacitor, connected in parallel with the non-contact wireless communication antenna, for obtaining a predetermined resonance frequency with the non-contact wireless communication antenna, a resonance frequency adjustment unit for changing a resonance capacitance of the resonance capacitor to adjust the resonance frequency, a capacitance change amount control unit for controlling a change in resonance capacitance of the resonance capacitor in the resonance frequency adjustment unit, a resonance frequency shift unit for shifting the resonance frequency of the non-contact wireless communication antenna, and on/off control unit for performing on/off control of the resonance frequency shift unit in accordance with the amount of change in resonance capacitance of the resonance capacitor by the capacitance variation control unit. | 06-11-2009 |
20090153421 | METHOD AND SYSTEM FOR AN INTEGRATED ANTENNA AND ANTENNA MANAGEMENT - Aspects of a method and system for an integrated antenna and antenna management are provided. In this regard, one or more reactances coupled to an antenna in a hybrid circuit may be tuned and signals may be transmitted and/or received based on the tuning. The hybrid circuit may comprise an integrated circuit (IC) bonded to a multi-layer package. The antenna may be embedded within and/or on the multi-layer package. The reactances may be within and/or on the IC and/or the multi-layer package. In this regard, the IC may be bonded to or mounted to an underside of the multi-layer package. The reactances may be tuned via one or more switching elements and/or logic, circuitry, and/or code within the IC. The reactances may comprise one or more inductors and/or capacitor arrays. The multi-layer package may comprise one or more layers of ferromagnetic and/or ferrimagnetic material. | 06-18-2009 |
20090262034 | ANTENNA MATCHING UNIT AND HIGH-FREQUENCY RECEIVING UNIT INCLUDING THE SAME - An antenna matching unit includes an antenna matching device to which a first high-frequency signal and a second high-frequency signal with a frequency higher than that of the first high-frequency signal are input; an active element to which an output signal from the antenna matching device is connected; and an output terminal to which an output from the active element is connected. The antenna matching device includes a signal line placed between the input and output; a series-connected element composed of a capacitor and inductor connected between the signal line and the ground; a capacitor connected in parallel with the inductor; and a control terminal for changing the capacitance value of the capacitor. The parallel resonance frequency between the inductor and capacitor is set to the frequency of the second high-frequency signal to reduce matching loss between the antenna and the tuner unit. | 10-22-2009 |
20090267851 | TUNABLE DUPLEXING ANTENNA AND METHODS - Tunable duplexers and related methods are disclosed for use in communications networks. A tunable radiating duplexer can include a first antenna comprising a first variable capacitor and a second antenna comprising a second variable capacitor. | 10-29-2009 |
20090278755 | ANTENNA DEVICE AND COMMUNICATION TERMINAL - An antenna device includes: an antenna element that transmits or receives wireless signals in a predetermined first frequency band and in a second frequency band higher in frequency than the first frequency band; a feeding terminal portion; a first bandwidth adjustment circuit that includes a first capacitor for widening a bandwidth of the first frequency band to a predetermined bandwidth, the capacitance of the first capacitor being set at a predetermined value in accordance with the predetermined bandwidth; and a second bandwidth adjustment circuit that includes second and third capacitors and a first inductor for widening a bandwidth of the first frequency band to the predetermined bandwidth, the capacitance of each of the second and third capacitors and the inductance of the first inductor being respectively set at predetermined values in accordance with the predetermined bandwidth. | 11-12-2009 |
20090289862 | Antenna System and a Method in Connection With an Antenna and an Antenna - The invention relates to an antenna system, which comprises a transmitter component ( | 11-26-2009 |
20090315793 | Electronic device, antenna thereof, and method of forming the antenna - The antenna of the invention includes a transceiver unit and a dielectric unit. The transceiver unit has a ground portion, a radial portion, a conductive portion and a feed portion. The ground portion and the radial portion are disposed apart in parallel, so as to form a space therebetween. The distance between the ground portion and the radial portion is defined as a transceiver unit height. The dielectric unit is disposed in the space. That is, the dielectric unit is disposed between the ground portion and the radial portion. The dielectric unit has a dielectric unit thickness less than the transceiver unit height. In one embodiment, the ratio of the dielectric unit thickness to the transceiver unit height is preferably between 0.4 and 0.7. | 12-24-2009 |
20100013725 | NORMALLY OPEN AND NORMALLY CLOSED RF MEMS SWITCHES IN A MOBILE COMPUTING DEVICE AND CORRESPONDING METHOD - A mobile computing device and corresponding method are disclosed. The mobile computing device includes an RF MEMS switch circuit including at least one normally open RU MEMS switch and a normally closed RU MEMS switch and a controller connected to the RU MEMS switch circuit. The RU MEMS switch circuit applies a default condition to the mobile computing device through the normally closed RU MEMS switch, and the controller causes application of control signals to one of the at least one normally open RU MEMS switches and to the normally closed RU MEMS switch to apply an alternate condition to the mobile computing device instead of the default condition. | 01-21-2010 |
20100026596 | ANTENNA DEVICE - The antenna device includes a ground plane | 02-04-2010 |
20100039337 | ELECTROMAGNETIC FIELD GENERATION ANTENNA FOR A TRANSPONDER - An antenna generating an electromagnetic field for an electromagnetic transponder and a terminal provided with such an antenna. The antenna comprises a first inductive element designed to be connected to two terminals employing an energizing voltage, and a parallel resonant circuit coupled with the first inductive element. | 02-18-2010 |
20100045550 | Method And Apparatus For A Tunable Channelizing Patch Antenna - A method and apparatus providing a tunable channelized patch antenna by selectively adjoining one or more radiating element extensions successively to a radiating element of the patch antenna, and adjusting fringe capacitance at active outer edges of the patch antenna. | 02-25-2010 |
20100045551 | ANTENNA ASSEMBLIES WITH ANTENNA ELEMENTS AND REFLECTORS - According to various aspects, exemplary embodiments are provided of antenna assemblies. In one exemplary embodiment, an antenna assembly generally includes at least one antenna element having first and second electrical paths. The antenna assembly may also include at least one reflector element spaced-apart from the antenna element for reflecting electromagnetic waves generally towards the antenna element. | 02-25-2010 |
20100045552 | ANTENNA DEVICE AND WIRELESS COMMUNICATION APPARATUS - A multi-resonant antenna device having good VSWR characteristics even in the UWB band, and a wireless communication apparatus including the antenna device are provided. The antenna device includes a substrate, an antenna main body surface-mounted at a corner of the substrate, and slits. The antenna device resonates at two different resonance frequencies. The slits are arranged to bring a VSWR value at a frequency between the two resonance frequencies closer to VSWR values at the two resonance frequencies. The slits include capacitive adjustment slit portions and inductive adjustment slit portions. The slits are provided in an area where the density of a current flowing on ground conductor surfaces is highest. The slits are arranged perpendicularly or substantially perpendicularly to a direction of this current. Specifically, the slits are provided near and parallel or substantially parallel to an open end of the radiating electrode portion. The lengths of the slits are set to one-eighth of a wavelength at a frequency corresponding to the highest VSWR value in the range between the two resonance frequencies. | 02-25-2010 |
20100053007 | TUNABLE DUAL-BAND ANTENNA USING LC RESONATOR - An Inverted-F antenna (IFA) includes a tunable parallel LC resonator physically inserted between two antenna bodies of the IFA structure. The LC resonator is comprised of a tunable capacitor C | 03-04-2010 |
20100053008 | ANTENNA HAVING DISTRIBUTED PHASE SHIFT MECHANISM - An antenna is provided. The antenna includes a first antenna element disposed over a ground plane and a second and third antenna element over the ground plane on opposing sides of the first antenna element, said first, second and third antenna elements forming a linear antenna array. The antenna further includes an electrical delay line having first and second conductors extending between the first and second antenna elements and between the first and third antenna elements, a parallel conductive elements disposed in series with each of the first and second conductors, the conductive elements extending away from the first and second conductors in a single direction perpendicular to a predominant axis of the linear array, a tuning substrate extending across the conductive elements of each of the delay lines with a pair of U-shaped conductive elements on opposing ends of the tuning substrate with opposing arms of each of the U-shaped tuning elements capacitively engaging respective, corresponding portions of the tuning stubs of the first and second conductors in a substantially identical manner and an actuator system that advances the tuning substrates transverse to the predominant axis thereby increasing an electrical delay on the second antenna and decreasing the electrical delay of the third antenna by substantially equal values. | 03-04-2010 |
20100060534 | ANTENNA DEVICE - An antenna device includes a reflector plate, plane conductors, an antenna element, variable impedance elements, control wires and linear conductors. The plane conductors are arranged regularly on a plane which is parallel to the reflector plate. The antenna element is set on the plane, to be parallel to the reflector plate. The variable impedance elements provide a directivity to the antenna element, the directivity is radiating a wave strongly to a particular direction. Each control wire supplies a control signal to each of the variable impedance elements. Each linear conductor connects each of some plane conductors with the reflector plate. Moreover, each of the other plane conductors is connected to the reflector plate through a portion of each control wire instead of the linear conductor. | 03-11-2010 |
20100073247 | Antenna Arrangement and Antenna Housing - An antenna arrangement including an antenna occupying at least a first plane; a conductive structure that is isolated from the antenna but is arranged to be parasitically fed by the antenna, the conductive structure having a slot and occupying at least a second plane different to but adjacent the first plane. | 03-25-2010 |
20100109959 | MONO- OR MULTI-FREQUENCY ANTENNA - The invention relates to a transmission/reception antenna having one or more given operating frequencies, comprising: at least one metallic member ( | 05-06-2010 |
20100127945 | Apparatus for compensation of the impedance and the load phase of the antenna element - An apparatus including an antenna element having an impedance and a load phase; a phase shifter coupled to the antenna element; and a controller for controlling, in response to a change in a context of the apparatus, the phase shifter to compensate for a consequent change in the impedance and the load phase of the antenna element. | 05-27-2010 |
20100194652 | ANTENNA STRUCTURE WITH AN EFFECT OF SERIALLY CONNECTING CAPACITANCES - In an antenna structure having an effect of serially connecting capacitances, mainly a metallic planar antenna is provided thereon at least with a first metallic plane board, and a second metallic plane board being close to but not connected to the first metallic plane board to form the effect of serially connecting capacitances. And more, the antenna structure further has an extension arm extended from the antenna or the second metallic plane board made from a microstrip, and can be optionally grounded or not grounded, for the purpose of adjusting the impedance value of the antenna structure. | 08-05-2010 |
20100309069 | METHOD AND SYSTEM FOR DYNAMIC CONTROL OF OUTPUT POWER OF A LEAKY WAVE ANTENNA - Methods and systems for dynamic control of output power of a leaky wave antenna (LWA) are disclosed and may include configuring one or more LWAs in a wireless device to transmit RF signals at a desired frequency. The LWAs may be integrated in support structures, including an integrated circuit, an integrated circuit package, and/or a printed circuit board. Impedances that are coupled to the LWAs and to a power amplifier enabled to amplify the RF signals may be dynamically configured. A resonant frequency of the LWAs may be tuned, which may be configured to transmit the RF signals at a desired angle from a surface of the support structure. The LWAs may include microstrip or coplanar waveguides where a cavity height of the LWAs may be configured by controlling spacing between conductive lines in the waveguides. The impedances may include capacitor arrays and/or inductors in the support structures. | 12-09-2010 |
20110001676 | ACTIVE TUNED LOOP-COUPLED ANTENNA - An active tuned loop-coupled antenna capable of optimizing performance over incremental bandwidths and capable of tuning over a large total bandwidth to be used in wireless communications. The active loop is capable of serving as the radiating element or a radiating element can be coupled to this active loop. Multiple active tuned loops can be coupled together to extend the total bandwidth of the antenna. Active components can be incorporated into the antenna structure to provide yet additional extension of the bandwidth along with increased optimization of antenna performance over the frequency range of the antenna. | 01-06-2011 |
20110032165 | ANTENNA WITH MULTIPLE COUPLED REGIONS - An antenna having a driven element coupled to multiple additional elements to resonate at multiple frequencies. A magnetic dipole mode is generated by coupling a driven element to a second element, and additional resonances are generated by coupling additional elements to either or both of the driven or second element. One or multiple active components can be coupled to one or more of the coupled elements to provide dynamic tuning of the coupled or driven elements. | 02-10-2011 |
20110102282 | RECONFIGURABLE MULTI-BAND ANTENNA SYSTEM AND ELECTRONIC APPARATUS HAVING THE SAME - A reconfigurable multi-band antenna system has a signal transmission metal, a ground metal, at least two resonators, and at least two switches. The signal transmission metal and the ground metal respectively act as a signal feed-in end and a ground end and of the reconfigurable multi-band antenna system. The at least two resonators are disposed on at least one side of the transmission metal line. Each switch is coupled to the at least two resonators or one of them. Each switch has a control end, and independently and respectively receives one of the at least two control signals, wherein the at least two control signals respectively and independently the short and open of the switches. The at least two resonators form a resonator configuration of a semi-close resonating configuration or a close resonating configuration, and generates a signal within a frequency according to the resonator configuration. | 05-05-2011 |
20110128200 | ANTENNA AND RADIO COMMUNICATION APPARATUS - An antenna includes a first arm whose one end is connected to a feeding unit, a second arm whose one end is connected to the first arm at a position that is away from the one end of the first arm and whose other end is connected to ground, and a variable impedance unit whose impedance is variable, provided between the ground and the other end of the first arm. | 06-02-2011 |
20110134003 | ANTENNA DEVICE - An antenna device includes an antenna unit, a power supply terminal and a time constant circuit. The antenna unit includes an antenna element and a variable capacitance element that is variable in capacitance in accordance with a voltage applied to the variable capacitance element, and resonates in such a manner that the antenna element and the variable capacitance element cooperate with each other. The power supply terminal supplies the voltage applied to the variable capacitance element. The time constant circuit gradually increases the voltage applied to the variable capacitance element when a voltage applied to the power supply terminal is changed from an off state to an on state. | 06-09-2011 |
20110148723 | Tunable Antenna Arrangement - An antenna arrangement including an antenna; a first variable impedance circuit connected between ground and a first point of the antenna; and a second variable impedance circuit connected between ground and a second point of the antenna and a connection from a third point of the antenna to ground wherein; the first point of the antenna and the second point of the antenna are separated along the length of the antenna and the impedance of the first variable impedance circuit and the second variable impedance circuit control the resonant frequency of the antenna arrangement. | 06-23-2011 |
20110156972 | LOOP RESONATOR APPARATUS AND METHODS FOR ENHANCED FIELD CONTROL - A radiating antenna element intended for portable radio devices and methods for designing manufacturing the same. In one embodiment, a loop resonator structure for enhanced field (e.g., electric field) is provided, the resonator having an inductive and a capacitive element forming a resonance in a first frequency band. The loop resonator structure is disposed substantially on the ground plane, thereby altering electrical energy distribution. The location of the resonant element is selected to reduce electric field strength proximate to one or more sensitive components, such as a mobile device earpiece, thereby improve hearing aid compliance. Capacitive tuning of the resonator, and the use of multiple resonator structures on the same device, are further described. | 06-30-2011 |
20110205133 | NON-CONTACT COMMUNICATION DEVICE - A problem of the invention is to provide a non-contact communication device capable of conducting non-contact communication even when a control section cannot be operated a drop in a battery voltage or a reset. A memory element ( | 08-25-2011 |
20110254748 | ANTENNA AND METHOD FOR STEERING ANTENNA BEAM DIRECTION - An antenna comprising an IMD element, and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements. | 10-20-2011 |
20110260940 | MOBILE ELECTRONIC DEVICE - A mobile electronic device comprises an RFID antenna section that sends and receives signals on a first useful frequency band, a main antenna section that sends and receives signals on a second useful frequency band, which is a higher frequency band than the first useful frequency band, an adjustment section that adjusts a resonance frequency of the RFID antenna section, and a control section that identifies a reactance value of the RFID antenna section based on the receiving sensitivity with respect to signals on the first useful frequency band and adjusts the resonance frequency of the RFID antenna section based on the identified reactance value by an adjustment section such that a high-order resonance frequency of the RFID antenna section is spaced apart from the second useful frequency band. | 10-27-2011 |
20120038528 | TUNABLE ANTENNA STRUCTURE HAVING A VARIABLE CAPACITOR - A tunable antenna structure having a variable capacitor includes a substrate, a first metal strip, a second metal strip and a third metal strip formed on the substrate, a variable capacitor element located between the first metal strip and the second metal strip, an inductor element located between the second metal strip and the third metal strip, a first capacitor element located between the first metal strip and the third metal strip, and a second capacitor element located on the third metal strip. | 02-16-2012 |
20120112973 | ANTENNA OF RESONANCE FREQUENCY VARIABLE TYPE - The present invention relates to a resonance frequency variable type antenna which has as low operating frequency as mobile broadcasting service bands of T-DMB and DVB-H and a wide frequency bandwidth and can select and receive various channels using a loop antenna capable of varying a resonance frequency through a variable capacitor. Particularly, the resonance frequency variable antenna can be mounted in a limited space, use two different service bands (T-DMB and DVB-H) and independently operate for the two service bands to achieve high-quality mobile broadcasting services. Accordingly, various mobile broadcasting services can be provided using a single antenna and the product values and reliabilities of the resonance frequency variable type antenna of the invention and mobile terminals including the resonance frequency variable antenna of the invention can be improved. | 05-10-2012 |
20120127047 | Internal FM Antenna - An antenna for receiving and/or transmitting radio frequency signals in a predetermined frequency band, the antenna comprising: a first antenna portion comprising at least one conducting loop about a first material having an initial permeability of at least 4; and a second antenna portion embedded within a second material having a dielectric constant of at least 4; wherein the first and second antenna portions are electrically coupled together so as to form a compound antenna having a size such that the diameter of the smallest sphere which encloses all of the first and second antenna portions of the compound antenna is less than 1/30 of the wavelength of the radio frequency signals at the centre of the predetermined frequency band. | 05-24-2012 |
20120139803 | ANTENNA, ADJUSTMENT METHOD THEREOF, AND ELECTRONIC DEVICE IN WHICH THE ANTENNA IS IMPLEMENTED - An antenna used in wireless communication, comprises: a dielectric substrate; a ground conductor portion arranged upon the dielectric substrate; an antenna element including a radiating conductor portion arranged upon the dielectric substrate opposite to the ground conductor portion, a shorted conductor portion that connects the radiating conductor portion and the ground conductor portion, and a power supply unit adapted to supply a high-frequency current to the radiating conductor portion; and an open conductor portion connected at high frequencies to the ground conductor portion, wherein the open conductor portion is connected to the dielectric substrate so as to protrude by a predetermined length from the location of the ground conductor portion in a diagonal direction from the location where the ground conductor portion and the shorted conductor portion are connected. | 06-07-2012 |
20120162037 | MOUNTING ELECTRONIC COMPONENTS ON AN ANTENNA STRUCTURE - A method and apparatus for mounting electronic components on an antenna structure includes at least one conductive antenna element | 06-28-2012 |
20120242550 | REMOTELY ADJUSTABLE REACTIVE AND RESISTIVE ELECTRICAL ELEMENTS AND METHOD - Apparatus and method that includes providing a variable-parameter electrical component in a high-field environment and based on an electrical signal, automatically moving a movable portion of the electrical component in relation to another portion of the electrical component to vary at least one of its parameters. In some embodiments, the moving uses a mechanical movement device (e.g., a linear positioner, rotary motor, or pump). In some embodiments of the method, the electrical component has a variable inductance, capacitance, and/or resistance. Some embodiments include using a computer that controls the moving of the movable portion of the electrical component in order to vary an electrical parameter of the electrical component. Some embodiments include using a feedback signal to provide feedback control in order to adjust and/or maintain the electrical parameter. Some embodiments include a non-magnetic positioner connected to an electrical component configured to have its RLC parameters varied by the positioner. | 09-27-2012 |
20120242551 | CIRCUIT CAPABLE OF AUTOMATICALLY CALIBRATING A RESONANCE FREQUENCY OF AN ANTENNA AND METHOD THEREOF - A circuit capable of automatically calibrating a resonant frequency of an antenna includes the antenna, a switch, a conversion unit, a count comparator, and a capacitor array. The switch is coupled to the antenna for being turned on and turned off according to a pulse. The antenna is used for generating the resonant frequency according to on and off of the switch. The conversion unit is coupled to the antenna for generating a clock according to a signal with the resonant frequency. The count comparator is coupled to the conversion unit for counting a number generated by a reference clock during a period of the clock, and comparing the pulse number with a predetermined value to generate an adjustment signal. The capacitor array is used for adjusting capacitance of the capacitor array according to the adjustment signal. | 09-27-2012 |
20120274522 | MULTIPLE ANTENNA ASSEMBLY UTILIZING ELECTRO BAND GAP ISOLATION STRUCTURES - A multiple antenna assembly with high isolation between the antennas is disclosed. The assembly includes a dielectric substrate with a ground plane and first and second antennas thereon. One or more metal-dielectric isolation structures are on the substrate at locations at which an electric current is present that has a current density greater than a predefined threshold. Each metal-dielectric isolation structure resonates at a given frequency that inhibits mutual signal coupling between the first and second antennas. Various configurations, such as concentric ring patterns, for the metal-dielectric isolation structures are disclosed. A device can be provided to dynamically tune the given frequency of the metal-dielectric isolation structures to correspond to radio frequency signals emitted by the first and second antennas. | 11-01-2012 |
20120274523 | ANTENNA ASSEMBLY UTILIZING METAL-DIELECTRIC RESONANT STRUCTURES FOR SPECIFIC ABSORPTION RATE COMPLIANCE - An wireless communication device has a housing with an exterior surface that is designed to face a user when the wireless communication device is transmitting a radio frequency signal. The communication device includes an antenna disposed inside the housing for emitting a radio frequency signal. A metal-dielectric structure resonates to reflect the radio frequency signal. The metal-dielectric structure is located between the antenna and the exterior surface at a position wherein he metal-dielectric structure traps and reflects the radio frequency signal thereby reducing a specific absorption rate of the wireless communication device. | 11-01-2012 |
20120274524 | METAMATERIAL RECONFIGURABLE ANTENNAS - Leaky wave antennas that can be reconfigured in pattern and/or polarization by exploiting the characteristic of metamaterial structures loaded with variable capacitor and inductors employ a Composite Right Left Handed (CRLH) unit cell with two independent DC biases used to actively change the group delay of the transmission line and the polarization of the radiated field while preserving good impedance matching. Different degrees of pattern and polarization reconfigurability are achieved by cascading multiple of these unit cells along a straight line, a circular line or a zigzag line while preserving high gain for all the antenna configurations and good impedance matching. | 11-01-2012 |
20120280870 | SYSTEM AND METHOD FOR A DYNAMIC LIQUID CORE PATCH ANTENNA AND BROADBAND FREQUENCY AGILITY - An exemplary embodiment of the present invention provides a tunable liquid core patch antenna comprising a top-side patch, a ground plane, and a liquid core substrate positioned substantially between the top-side patch and the ground plane. The liquid core substrate can comprise a first liquid having a first dielectric constant and a second liquid having a second dielectric constant greater than the first dielectric constant. The first liquid and second liquid can form a mixture having an effective dielectric constant greater than the first dielectric constant and less than the second dielectric constant. | 11-08-2012 |
20120293384 | IMPEDANCE TUNING OF TRANSMITTING AND RECEIVING ANTENNAS - The present disclosure relates to impedance tuning of transmitting and receiving antennas. | 11-22-2012 |
20130002498 | MOBILE WIRELESS COMMUNICATIONS DEVICE HAVING DIVERSITY ANTENNA SYSTEM AND RELATED METHODS - A mobile wireless communications device has a portable handheld housing. A circuit board is carried by the portable handheld housing. RF circuitry is carried by the circuit board. A diversity antenna and main antenna are carried by the portable handheld housing and coupled to the RF circuitry and operative together. The RF circuitry tunes the diversity antenna into a diversity communications frequency band to achieve a diversity mode of operation with the main antenna and tunes the diversity antenna into a non-diversity communications frequency band when cross-coupling has occurred from the diversity antenna to the main antenna when operating in the diversity communications frequency band. A switch is carried by the portable handheld housing and connected to the RF circuitry and coupled between the diversity and main antennae and disconnects the diversity antenna when operating in the non-diversity band to prevent cross-coupling from the diversity antenna to the main antenna. | 01-03-2013 |
20130063319 | METHOD AND REMOTELY ADJUSTABLE REACTIVE AND RESISTIVE ELECTRICAL ELEMENTS - Apparatus and method that includes providing a variable-parameter electrical component in a high-field environment and based on an electrical signal, automatically moving a movable portion of the electrical component in relation to another portion of the electrical component to vary at least one of its parameters. In some embodiments, the moving uses a mechanical movement device (e.g., a linear positioner, rotary motor, or pump). In some embodiments of the method, the electrical component has a variable inductance, capacitance, and/or resistance. Some embodiments include using a computer that controls the moving of the movable portion of the electrical component in order to vary an electrical parameter of the electrical component. Some embodiments include using a feedback signal to provide feedback control in order to adjust and/or maintain the electrical parameter. Some embodiments include a non-magnetic positioner connected to an electrical component configured to have its RLC parameters varied by the positioner. | 03-14-2013 |
20130069839 | ISOLATION ENHANCEMENT BETWEEN PLANAR ANTENNA ELEMENTS - An antenna system for creating mutual radiation isolation between planar antenna elements over a narrow band uses field cancellation. Adjacent planar antenna elements are positioned in a common ground plane within a mobile phone repeater station, A tuned slot element is positioned between the antenna elements and coupled to share ground plane current in. order to maximize cancellation and minimize degradation of the radiation of the antenna elements. The dimensions of the toned slot element are adjusted to obtain lambda/2 resonance, whereby, isolation of more than 10 dB is attained between the antenna elements. | 03-21-2013 |
20130082888 | METHOD FOR FABRICATING ANTENNA DEVICE OF MOBILE COMMUNICATION TERMINAL - An antenna device of a mobile communication terminal is provided, the device including at least one radiation pattern and at least one magneto dielectric module or dielectric module installed in a selected position on the radiation pattern to tune one or more resonance frequencies of the radiation pattern according to resonance frequencies required for the terminal The radiation pattern is selected from among one or more radiation patterns fabricated according to a usable frequency band. The one or more radiation patterns each include one or more resonance frequencies. The magneto dielectric module is selected from among one or more magneto dielectric modules fabricated for controlling the one or more resonance frequencies of the one or more radiation patterns. The dielectric module is selected from among one or more dielectric modules fabricated for controlling the one or more resonance frequencies of the one or more radiation patterns. | 04-04-2013 |
20130088398 | ANTENNA APPARATUS AND WIRELESS COMMUNICATION DEVICE USING SAME - An antenna device includes an antenna element | 04-11-2013 |
20130093634 | MULTI-BAND MIMO ANTENNA - A multi-band antenna system for MIMO applications is adapted to provide high isolation between antennas across a wide range of frequencies. Multiple Isolated Magnetic Dipole (IMD) antennas are co-located and connected with a feed network that can include switches that adjust phase length for transmission lines connecting the antennas. Filtering is integrated into the feed network to improve rejection of unwanted frequencies. Filtering can also be implemented on the antenna structure. Either one or multi-port antennas can be used. | 04-18-2013 |
20130093635 | MODAL ADAPTIVE ANTENNA USING PILOT SIGNAL IN CDMA MOBILE COMMUNICATION SYSTEM AND RELATED SIGNAL RECEIVING METHOD - One or more input signals are used to generate a Pseudo noise generator and re-inject the signal to obtain a more efficient method of control of a receiver using adaptive antenna array technology. The antenna array automatically adjusts its direction to the optimum using information obtained from the input signal by the receiving antenna elements. The input signals may be stored in memory for retrieval, comparison and then used to optimize reception. The difference between the outputs of the memorized signals and the reference signal is used as an error signal. | 04-18-2013 |
20130099987 | MULTI-FUNCTION ARRAY FOR ACCESS POINT AND MOBILE WIRELESS SYSTEMS - A multi-function array is described where several communication system functions are realized using the same antenna architecture. An array of antenna elements where each antenna element can generate multiple radiation patterns is described; the multiple radiation patterns from each antenna element provides increased capability and flexibility in generating a phased array, a MIMO antenna system, a receive diversity antenna system, as well as direction finding feature by way of an interferometer function provided by one or multiple elements. The small volume attributes of the antenna elements populating the array lend this technique to mobile wireless devices as well as access points. | 04-25-2013 |
20130113666 | CAPACITIVELY COUPLED COMPOUND LOOP ANTENNA - A compound loop antenna (CPL) is described that includes a capacitively fed magnetic loop and/or a capacitively fed electric field radiator. Embodiments include single-band CPL antennas and multi-band CPL antennas. The CPL antennas have been reduced in physical size by capacitively feeding the loop and/or radiator. The embodiments include at least one e-field radiation element that is capacitively coupled or not capacitively coupled, at least one magnetic loop element that is capacitively coupled. A continuation of the magnetic loop may be continued with either a wire or a connection to a second layer. | 05-09-2013 |
20130113667 | ANTENNA AND METHOD FOR STEERING ANTENNA BEAM DIRECTION - An antenna comprising an IMD element and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements. | 05-09-2013 |
20130120200 | MULTI LEVELED ACTIVE ANTENNA CONFIGURATION FOR MULTIBAND MIMO LTE SYSTEM - An active antenna system and algorithm is described that provides for dynamic tuning and optimization of antenna system parameters for a MIMO system where correlation and isolation between antennas in the system are dynamically altered to provide for greater throughput. As one or multiple antennas are loaded or de-tuned due to environmental changes, corrections to correlation and/or isolation are made by selecting the optimal antenna radiation pattern and by adjusting electrical length and/or reactive loading of transmission lines connecting the antennas. Multiple Isolated Magnetic Dipole (IMD) antennas are co-located and connected with a feed network that can include switches that adjust phase length for transmission lines connecting the antennas. Filtering is integrated into the feed network to improve rejection of unwanted frequencies. Filtering can also be implemented on the antenna structure. | 05-16-2013 |
20130135162 | ANTENNA SYSTEM FOR INTERFERENCE SUPRESSION - An antenna system is capable of optimizing communication link quality with one or multiple transceivers while suppressing one or multiple interference sources. The antenna provides a low cost, physically small multi-element antenna system capable of being integrated into mobile devices and designed to form nulls in the radiation pattern to reduce interference from unwanted interferers. The antenna system operates in both line of sight and high multi-path environments by adjusting the radiation pattern and sampling the received signal strength to reduce signal levels from interferers while monitoring and optimizing receive signal strength from desired sources. | 05-30-2013 |
20130135163 | ACTIVE MIMO ANTENNA CONFIGURATION FOR MAXIMIZING THROUGHPUT IN MOBILE DEVICES - An active antenna system and algorithm is proposed that provides for dynamic tuning and optimization of antenna system parameters for a MIMO system that will provide for greater throughput. As one or multiple antennas are loaded or de-tuned due to environmental changes, corrections to correlation and/or isolation are made by tuning the active antenna. A null-steering technique is implemented to alter the near-field and far-field characteristics to aid in modifying correlation and isolation in the multi-antenna system. | 05-30-2013 |
20130141291 | ANTENNA ARRANGEMENTS FOR COVERING FREQUENCY BANDS - An exemplary embodiment of an antenna arrangement generally includes a board including a ground plane, a radiating element, and a first parasitic element. The radiating element is dimensioned for providing resonance at a first frequency. The radiating element is arranged at a first edge of the board. The first parasitic element is arranged at a second edge of the board opposite the first edge. The first parasitic element is dimensioned for providing resonance at another frequency near the first frequency for providing coverage of a first frequency band. A major extension of the first parasitic element is along the second edge of the board. | 06-06-2013 |
20130141292 | MULTI-ANTENNA MODULE CONTAINING ACTIVE ELEMENTS AND CONTROL CIRCUITS FOR WIRELESS SYSTEMS - An antenna system is provided for use in wireless communication, the antenna system is contained in a modular structure. The antenna system includes a plurality of co-located antennas, including at least one active modal antenna, each of the antennas being adapted for operation at a distinct frequency band. The antenna system further includes an active tuning module for tuning a frequency response of the co-located antennas. | 06-06-2013 |
20130141293 | SUPERIMPOSED MULTIMODE ANTENNA FOR ENHANCED SYSTEM FILTERING - In a typical system a combination of filters (BAW, SAW, etc) and an antenna are configured to achieve frequency filtering effect and efficient transmission and reception of communication signals. Wireless communication systems require specific bandwidth and out-of-band rejection; typically this metric is characterized in frequency roll-off in units of dB/MHz. This number is distributed between the antenna and filter, with the antenna contributing little to date to the filtering effect. Loss and cost penalties are incurred when multi-mode systems are designed which require additional rejection from the filter elements. Described here is a method of designing antennas to reduce the amount of rejection and complexity from the filter system. A superposition of a symmetrical frequency response from the antenna structure coupled with a non-symmetrical frequency response from a counterpoise structure generates increased rejection of out-of-band components. | 06-06-2013 |
20130141294 | Active Antennas for Multiple Bands in Wireless Portable Devices - Wireless devices, and particularly mobile devices such as cellphones, PDAs, computers, navigation devices, etc., as well as other devices which transmit or receive data or other signals at multiple frequency bands utilize at least one antenna to transmit and receive and a plurality of different bands (e.g., GSM cellular communication band; Bluetooth short range communication band; ultrawideband (UWB) communications, etc.). These wireless devices can simultaneously transmit or receive at a plurality of different bands, or simultaneously transmit and receive at different bands. The wireless devices have the ability to use a single physical structure (e.g., an antenna) for transmission and reception of many different bands. The antenna can be either actively tuned or passively tuned using one or more elements. | 06-06-2013 |
20130147672 | MODAL ANTENNA WITH CORRELATION MANAGEMENT FOR DIVERSITY APPLICATIONS - Antenna systems comprising modal antennas for use in diversity and similar schemes include a modal antenna capable of multiple antenna modes wherein a distinct radiation pattern exists for each antenna mode, and a control signal for directing variation of the antenna modes. Methods for designing modal diversity antennas are further disclosed. | 06-13-2013 |
20130154888 | Tunable antenna and Related Radio-Frequency Device - A tunable antenna is disclosed. The tunable antenna includes a ground element for providing grounding, a signal feed-in terminal, a radiation unit electrically connected to the signal feed-in terminal and including a long side extended from the signal feed-in terminal along a first direction, a short side extended from the signal feed-in terminal along a second direction, and a branch electrically connected between the signal feed-in terminal and the ground element, a coupling unit for coupling to the long side, and a switch unit for connecting or disconnecting the coupling unit to/from the ground element to change a coupling relationship between the coupling unit and the long side, such that the tunable antenna respectively operates in a first frequency band and a second frequency band. | 06-20-2013 |
20130154889 | ACTIVE FRONT END MODULE USING A MODAL ANTENNA APPROACH FOR IMPROVED COMMUNICATION SYSTEM PERFORMANCE - This application describes a dynamically tuned front end module using a modal antenna approach for improved communication system performance. The front end module consists of power amplifiers, filters, switches and antennas along with tuning circuits integrated and controlled to provide an optimized system for RF transmission. Dynamic tuning provides the ability to maintain optimized system performance for a wide variety of use cases and environments that the wireless device is operated in. Several transmission modes are accessed in an algorithm to optimize the performance of multiple wireless devices in a cellular system, to include a power conservation mode, emergency transmission mode, and cell capacity optimization mode. Dynamic adjustment of correlation and isolation between multiple antennas is a benefit provided by this front end topology. | 06-20-2013 |
20130169493 | Tunable Microwave Devices with Auto-Adjusting Matching Circuit - An embodiment of the present disclosure provides a variable impedance circuit including an antenna having a tunable component. The tunable component can be operable to receive a variable signal to cause the tunable component to change an impedance of the antenna. The tunable component can include a first conductor coupled to the antenna, a second conductor, and a tunable material positioned between the first conductor and the second conductor, where at least one of the first conductor or the second conductor, or both are adapted to receive the variable signal to cause the change in the impedance of the antenna. Additional embodiments are disclosed. | 07-04-2013 |
20130194144 | MULTI-RESONANCE TUNABLE ANTENNA - Disclosed is a multi-resonance tunable antenna having a plurality of variable resonance points. The multi-resonance tunable antenna includes at least two branch lines and at least two capacitors. The at least two branch lines branch from a branch point of a basic line, which is connected to a filter used to receive wireless signals, in different directions. The at least two capacitors are connected between the at least two branch lines and a grounding terminal. | 08-01-2013 |
20130201067 | Tunable Antenna System - An electronic device antenna may be provided with an antenna ground. An antenna resonating element may have a first end that is coupled to the ground using an inductor and may have a second end that is coupled to a peripheral conductive housing member in an electronic device. The peripheral conductive housing member may have a portion that is connected to the ground and may have a portion that is separated from the ground by a gap. The gap may be bridged by an inductor that couples the second end of the antenna resonating element to the antenna ground. The inductor may be bridged by a switch. A tunable circuit such as a capacitor bridged by a switch may be interposed in the antenna resonating element. The switches that bridge the gap and the capacitor may be used in tuning the antenna. | 08-08-2013 |
20130249750 | ANTENNA ADJUSTMENT CIRCUIT, ANTENNA ADJUSTMENT METHOD, AND COMMUNICATION UNIT - An antenna adjustment circuit includes: a drive section that inputs an alternating drive signal to a variable capacitance connected to an antenna; and a control section that sets a capacitance value of the variable capacitance, based on a phase of an output signal derived from the variable capacitance. | 09-26-2013 |
20130249751 | Dynamically reconfigurable feed network for multi-element planar array antenna - A dynamically-reconfigurable feed network antenna having a microstrip patchwork radiating surface wherein individual radiating patches and elements of a stripline feed structure can be connected to and disconnected from each other via photoconductive interconnections. Commands from software alternately turn light from light emitting sources on or off, the light or lack thereof being channeled from an underside layer of the antenna so as to enable or disable the photoconductive interconnections. The resultant connection or disconnection of the radiating patches to each other and to the stripline feed structure will vary the antenna's frequency, bandwidth, and beam pointing. | 09-26-2013 |
20130249752 | Three-Dimensional Multiple Spiral Antenna and Applications Thereof - A three-dimensional multiple spiral antenna includes a substrate, a plurality of spiral antenna sections, and a feed point module. The substrate has a three-dimensional shaped region and each spiral antenna section is supported by a corresponding section of the three-dimensional shaped region and conforms to the corresponding section of the three-dimensional shaped region such that, collectively, the spiral antenna sections have an overall shape approximating a three-dimensional shape. The feed point module is coupled to a connection point of at least one of the spiral antenna sections. | 09-26-2013 |
20130271330 | ANTENNA FOR WIRELESS DEVICE - An antenna for a wireless device includes a low band left-handed (LBLH) mode element and a low band right-handed (LBRH) mode element both operable in a low frequency bandwidth and a high band left-handed (HBLH) mode element and a high band right-handed (HBRH) mode element both operable in a high frequency bandwidth. The LBLH mode element is capacitively coupled to a feed of the antenna and is inductively coupled to a ground of the antenna. The LBRH mode element is electrically coupled to the feed of the antenna. The HBLH mode element is capacitively coupled to the feed of the antenna and is inductively coupled to the ground of the antenna. The HBRH mode element is electrically coupled to the feed of the antenna. At least one tuning element is operatively coupled to at least one of the mode elements. | 10-17-2013 |
20130285863 | Reconfigurable Multi-band Antenna - Reconfigurable multi-band antenna techniques are described. In one or more implementations, an apparatus includes an antenna that can operate at multiple frequency bands that include first and second frequency bands, respectively. The antenna includes a first radiator structure configured to tune to the first frequency band and comprising a first radiator element. In addition, the antenna includes a second radiator structure configured to tune to the second frequency band and comprising the first radiator element and a second radiator element. The antenna also includes a tunable circuit configured to couple the first radiator element to the second radiator element. Additionally, the apparatus includes a communication module configured to use the tunable circuit to adjust one of said first and second frequency bands independently from, and without causing a change in, the other of said first and second frequency bands. | 10-31-2013 |
20130293431 | MULTIPLE-BAND ANTENNA WITH PATCH AND SLOT STRUCTURES - A multiple-band antenna having first and second operating frequency bands is provided. The antenna includes a first patch structure associated primarily with the first operating frequency band, a second patch structure electrically coupled to the first patch structure and associated primarily with the second operating frequency band, a first slot structure disposed between a first portion of the first patch structure and the second patch structure and associated primarily with the first operating frequency band, and a second slot structure disposed between a second portion of the first patch structure and the second patch structure and associated primarily with the second operating frequency band. A mounting structure for the multiple-band antenna is also provided. The mounting structure includes a first surface and a second surface opposite to and overlapping the first surface. | 11-07-2013 |
20130293432 | MEMS MODULE, VARIABLE REACTANCE CIRCUIT AND ANTENNA DEVICE - Provided is a MEMS module that includes a MEMS element having a first capacitor electrode that can be displaced, a second capacitor electrode that opposes the first capacitor electrode, and driving electrodes that cause the first capacitor electrode to be displaced. The driving electrodes are connected to a control unit that applies a driving voltage to the driving electrodes and monitor terminals for detecting power. Thus, an element for monitoring power is not needed and a MEMS module, a variable reactance circuit and an antenna device are provided that are capable of realizing smaller size and lower loss. | 11-07-2013 |
20130307739 | TUNABLE ANTENNA INTEGRATED SYSTEM AND MODULE THEREOF - The tunable antenna integrated system may include a tunable antenna module, a bias module, a direct current control module, and a RF module. The tunable antenna module may include a tunable capacitor and an antenna. The tunable capacitor may have the capacitance thereof adjusted according to an adjusting voltage. A resonant frequency of the antenna is controlled by the tunable capacitor. The bias module has a digital/analog converter for receiving a control voltage to generate the adjusting voltage, and the adjusting voltage may be outputted to the tunable capacitor with the value thereof larger than that of the control voltage. The direct current control module is connected to the bias module for outputting the control voltage to the digital/analog converter. The RF module is connected to the bias module, and a RF signal is transmitted between the tunable antenna module and the RF module through the bias module. | 11-21-2013 |
20130328734 | ADAPTIVE ANTENNA IMPEDANCE MATCHING - An apparatus and method of compensating for an antenna impedance mismatch are provided, including obtaining information about a signal-to-noise ratio (SNR) of a signal received by the antenna, determining that an impedance mismatch exists if the obtained information indicates a predetermined condition indicative of an impedance mismatch, and tuning the antenna to compensate for the impedance mismatch. | 12-12-2013 |
20140015718 | TRI-BAND ANTENNA FOR NONCELLULAR WIRELESS APPLICATIONS - A tri-band antenna for noncellular wireless applications is provided. The antenna comprises: a first radiating arm for generating a first resonance in a first frequency band, the first radiating arm further enabled for connection to an antenna tuning circuit; the first radiating arm comprising a capacitive coupling structure; a coupling arm separated by a gap from the first radiating arm; a second radiating arm for generating a second resonance in a second frequency band lower than the first frequency band, the second radiating arm connected to the coupling arm such that the second radiating arm is capacitively coupled to the first radiating arm; and a third radiating arm for generating a third resonance in a third frequency band lower than the second frequency band, the third radiating arm connected to the coupling arm such that the third radiating arm is capacitively coupled to the first radiating arm. | 01-16-2014 |
20140015719 | SWITCHED ANTENNA APPARATUS AND METHODS - Dynamically switchable antenna apparatus and associated methods. In one embodiment, a switching antenna configuration is used within a portable device (e.g. mobile phone). The switching antenna comprises at least one antenna element which operates at one or more resonant frequencies, and one or more switching elements. In one implementation, the switching elements are autonomously controlled to correct for detuning effects experienced by the antenna (e.g., body tissue loading) by modifying the electrical length of the antenna radiator(s) and/or correcting antenna impedance mismatch. In another implementation, the switching elements are controlled to effectuate band switching of the antenna. | 01-16-2014 |
20140015720 | TRI-BAND ANTENNA FOR NONCELLULAR WIRELESS APPLICATIONS - A tri-band antenna for noncellular wireless applications is provided. The antenna comprises: a first radiating arm for generating a first resonance in a first frequency band, the first radiating arm further enabled for connection to an antenna tuning circuit; the first radiating arm comprising a capacitive coupling structure; a coupling arm separated by a gap from the first radiating arm; a second radiating arm for generating a second resonance in a second frequency band lower than the first frequency band, the second radiating arm connected to the coupling arm such that the second radiating arm is capacitively coupled to the first radiating arm; and a third radiating arm for generating a third resonance in a third frequency band lower than the second frequency band, the third radiating arm connected to the coupling arm such that the third radiating arm is capacitively coupled to the first radiating arm. | 01-16-2014 |
20140022132 | ANTENNA TUNING FOR MULTIBAND OPERATION - A system and process that incorporates teachings of the subject disclosure may include, for example, a multiband antenna as may be used in mobile communications devices. The multiband antenna includes a feed port coupled to each of a first radiating portion and a second radiating portion. Each of the first and second radiating portions defines a respective resonant bandwidth. The multiband antenna also includes at least one adjustable tuning circuit disposed between physically isolated radiating segments of a respective one of the first and second radiating portions. Adjustment of the tuning circuit alters a corresponding resonant bandwidth allowing the corresponding resonant bandwidth to be tuned independently of the other resonant bandwidth and without affecting performance of the other resonant bandwidth. In at least some embodiments, the tuning circuit can include a tunable phase shifter having one or more components, each having a variable reactance. Other embodiments are disclosed. | 01-23-2014 |
20140022133 | SINGLE-LAYER METALIZATION AND VIA-LESS METAMATERIAL STRUCTURES - Techniques and apparatus based on metamaterial structures provided for antenna and transmission line devices, including single-layer metallization and via-less metamaterial structures. | 01-23-2014 |
20140049434 | METHOD AND APPARATUS FOR TUNING A COMMUNICATION DEVICE - A system that incorporates teachings of the present disclosure may include, for example, a tuning system for a communication device having an antenna, where the tuning system includes at least one first tunable element connected with at least one radiating element of the antenna for tuning the antenna where the adjusting of the at least one first tunable element is based on at least one of a use case associated with the communication device and location information associated with the communication device, and a matching network having at least one second tunable element coupled at a feed point of the antenna, wherein the matching network receives control signals for adjusting the at least one second tunable element to tune the matching network. Additional embodiments are disclosed. | 02-20-2014 |
20140062813 | ANTENNA TUNING VIA MULTI-FEED TRANSCEIVER ARCHITECTURE - The disclosed invention relates to an antenna configuration that is configured to tune the frequency of transmission without using filters. The antenna configuration comprises a tunable multi-feed antenna configured to wirelessly transmit electromagnetic radiation. A signal generator is configured to generate a plurality of signals that collectively correspond to a signal to be transmitted. The plurality of signals have a phase shift or amplitude difference therebetween. The plurality of signals are provided to a plurality of antenna feeds connected to different spatial locations of the tunable multi-feed antenna. The values of the phase shift and/or amplitude difference define an antenna reflection coefficient that controls the frequency characteristics that the tunable multi-feed antenna operates at, such that by varying the phase shift and or amplitude difference, the frequency characteristics can be selectively adjusted. | 03-06-2014 |
20140062814 | Rapid Tuning Frequency Adjustable Mobile HF Communication Antenna - A mobile high-frequency antenna rapidly adjustable to minimize VSWR and maximize transmitting and receiving efficiency includes a conductive whip mounted on a coil housing containing a solenoidal loading coil electrically connected at an upper end to the whip and at a lower end to a conductive mast which supports the coil housing. A coil contactor disk at the upper end of a conductive metal shaft raised or lowered by a stepper motor-driven lead screw has protruding spring loaded balls which rollingly contact inner surfaces of coil turns to thus insert less or more inductance between the shaft and whip to tune the antenna. A pair of RF de-couplers in a coil housing base plug which electrically contacts the mast and the lower end of the coil slidably support and electrically contact the shaft, thus shorting out lower parts of the coil to suppress harmonic currents from being induced therein. | 03-06-2014 |
20140062815 | MOBILE DEVICE AND ANTENNA STRUCTURE THEREIN - A mobile device includes an antenna structure, a signal source, a tunable circuit element, and a tuner. The antenna structure includes a radiation element. The tunable circuit element is coupled to the radiation element. The antenna structure and the tunable circuit element are disposed in a clearance region of the mobile device. The tuner has a variable impedance value, and is coupled between the tunable circuit element and the signal source. The tuner and the signal source are disposed in a circuit board region of the mobile device. | 03-06-2014 |
20140062816 | ANTENNA AND PORTABLE DEVICE HAVING THE SAME - An antenna and a portable device having the same are provided. The antenna provided in a portable device includes: a radiator unit housed at one surface of the portable device; and a resonant frequency compensation unit housed at another surface of the portable device facing the one surface and adjusting a resonant frequency of the radiator unit changed by an environment change to a preset resonant frequency. Examples of the environment change include a device color change, and a battery size change. | 03-06-2014 |
20140062817 | IMPEDANCE-MATCHING SWITCHING CIRCUIT, ANTENNA DEVICE, HIGH-FREQUENCY POWER AMPLIFYING DEVICE, AND COMMUNICATION TERMINAL APPARATUS - An antenna device includes an impedance-matching switching circuit connected to a feeding circuit, and a radiating element. The impedance-matching switching circuit matches the impedance of the radiating element as a second high frequency circuit element and the impedance of the feeding circuit as a first high frequency circuit element. The impedance-matching switching circuit includes a transformer matching circuit and a series active circuit. The transformer matching circuit matches the real parts of the impedance and matches the imaginary parts of the impedance in the series active circuit. Thus, impedance matching is performed over a wide frequency band at a point at which high frequency circuits or elements having different impedances are connected to each other. | 03-06-2014 |
20140071007 | WIRELESS COMMUNICATION DEVICE - A wireless communication device includes a cover, an antenna, and an adjusting member. The antenna includes a first radiator and a second radiator separate from the first radiator. The adjusting member is slidably mounted to the cover and is made of conductive materials. The adjusting member is positioned between and connecting the first radiator and the second radiator. The adjusting member is slid relative to the cover to change connection positions of the adjusting member relative to the first radiator and the second radiator. | 03-13-2014 |
20140071008 | ANTENNA WITH PROXIMITY SENSOR FUNCTION - An antenna with proximity sensor function is disclosed, the antenna includes at least one parasitic element coupled to a filter circuit and a proximity sensing circuit for sensing a load on the parasitic element to determine load capacitive loading characteristics for sensing user leading of the device. By sensing the user loading or mode of the device, the antenna can be reconfigured with beam steering or frequency shifting adjustments. | 03-13-2014 |
20140091974 | MODAL ANTENNA-INTEGRATED BATTERY ASSEMBLY - A modal antenna is formed within a battery assembly for use with a portable electronic device. In certain embodiments, the antenna is printed on an exterior surface of a battery enclosure using a conductive ink. In other embodiments, the antenna is attached, or etched, on a substrate; the substrate may at least partially include a battery housing. The antenna can include an Isolated Magnetic Dipole (IMD) antenna, or other radiating structure. Active components, such as active tuning components, are optionally included in the antenna-integrated battery assembly for the purpose of tuning the antenna. | 04-03-2014 |
20140091975 | ANTENNA STRUCTURE WITH AN EFFECTIVE SERIAL CONNECTING CAPACITANCE - In an antenna structure having a serial connected capacitance effect, mainly a metallic planar antenna is provided thereon at least with a first metallic plane board, and a second metallic plane board being close to but not connected to the first metallic plane board to form the effect of capacitance in serial connecting. And more, the antenna structure further has an extension arm made from a microstrip extended from the antenna or the second metallic plane board, and can be optionally grounded or not grounded, for the purpose of adjusting the impedance value of the antenna structure. | 04-03-2014 |
20140118204 | ANTENNA INTEGRATED WITH METAL CHASSIS - One aspect provides an antenna. The antenna, in this aspect, includes a grounded segment extending from a metal chassis of an electronic device, and a feed portion coplanar with the grounded segment, the grounded segment and feed portion jointly tuned to cause the antenna to communicate in selected bands of frequencies. | 05-01-2014 |
20140118205 | TUNABLE MICROWAVE DEVICES WITH AUTO-ADJUSTING MATCHING CIRCUIT - An embodiment of the present disclosure provides a circuit including an antenna having a tunable component. The tunable component can be operable to receive a variable signal to cause the tunable component to change a reactance of the antenna. The tunable component can include a first conductor coupled to the antenna, a second conductor, and a tunable material positioned between the first conductor and the second conductor, where at least one of the first conductor or the second conductor, or both are adapted to receive the variable signal to cause the change in the reactance of the antenna. Additional embodiments are disclosed. | 05-01-2014 |
20140125535 | CAPACITIVELY COUPLED ANTENNA APPARATUS AND METHODS - Capacitively coupled antenna apparatus and methods of operating and adaptively tuning the same. In one embodiment, the insertion loss component in “beside the hand/head” use scenarios is significantly reduced or eliminated such that the antenna experiences only absorptive losses (which generally cannot be avoided), and a very small insertion loss by the host device radio frequency tuner. The exemplary antenna apparatus may be configured for multi-band operation, and also has a very small form factor (e.g., 3 mm ground clearance only at the bottom of the PCB, 4 mm height in one implementation), thereby allowing for use in spatially compact host devices such as slim-line smartphones, tablets, and the like. The adaptive antenna arrangement (using capacitive feed) can be tuned such that the tuner is used in free space, and the user's hand/head tunes the antenna to the band of interest while in use. | 05-08-2014 |
20140139385 | FOLDED PATCH ANTENNA PLATFORM - Various systems and methods are provided for folded patch antennas. In one embodiment, among others, a folded patch antenna includes a patch disposed on an outer side of a flexible substrate and a ground plane disposed on an inner side of the flexible substrate opposite the patch. The flexible substrate is folded to form an enclosed cavity defined by the inner side of the flexible substrate. The ground plane may provide electromagnetic interference (EMI) shielding of the cavity. In another embodiment, among others, a folded patch antenna platform includes a flexible substrate, a folded patch antenna, and a transceiver mounted on the flexible substrate. The folded patch antenna includes a patch communicatively coupled to the transceiver and a ground plane, which are disposed on opposite sides of the flexible substrate. | 05-22-2014 |
20140159971 | MULTI-OUTPUT ANTENNA - A reconfigurable multi-output antenna ( | 06-12-2014 |
20140184454 | MULTI-FUNCTION ARRAY FOR ACCESS POINT AND MOBILE WIRELESS SYSTEMS - A multi-function array is described where several communication system functions are realized using the same antenna architecture. An array of antenna elements where each antenna element can generate multiple radiation patterns is described; the multiple radiation patterns from each antenna element provides increased capability and flexibility in generating a phased array, a MIMO antenna system, a receive diversity antenna system, as well as direction finding feature by way of an interferometer function provided by one or multiple elements. The small volume attributes of the antenna elements populating the array lend this technique to mobile wireless devices as well as access points. | 07-03-2014 |
20140184455 | BACKHAUL RADIO WITH AN APERTURE-FED ANTENNA ASSEMBLY - Directive gain antenna elements implemented with an aperture-fed patch array antenna assembly are described. A feed network for the aperture-fed patch array may include offset apertures and may also include meandering feed lines. Scalable aperture shapes and orientations that can be used with antennas operating at any frequency and with dual orthogonal polarizations are also disclosed. Directive gain antenna elements implemented with arrays of orthogonal reflected dipoles are also described with optimal feed networks and parasitic elements to achieve desired directive gain characteristics. Such arrayed dipole antennas feature dual orthogonal polarizations with assembly tabs that lower cost and improve reliability. Backhaul radios that incorporate said antennas are also disclosed. | 07-03-2014 |
20140203980 | Utilization of Antenna Loading for Impedance Matching - Techniques for utilization of antenna loading for impedance matching are described. In at least some embodiments, a device (e.g., a smart phone) includes multiple antennas that are employed to send and receive wireless signals for the device. The device further includes impedance matching functionality communicatively connected to the antennas, and configured to perform impedance matching for one of the antennas based on loading (e.g., dielectric loading) of another of the antennas. | 07-24-2014 |
20140210679 | ANTENNA APPARATUS AND FEEDING STRUCTURE THEREOF - Disclosed are an antenna apparatus and a feeding structure thereof. An antenna apparatus includes: a radiator; a feeding structure including a feeding unit to provide a signal to the radiator, a ground unit to ground the radiator, and a resonance applying part between the feeding unit and the ground unit; and a contact part to connect the radiator with the feeding structure. The antenna apparatus may include the contact part to easily adjust at least one of the resonance bands and a space in the antenna apparatus can be efficiently used. | 07-31-2014 |
20140218245 | ANTENNA AND METHOD FOR STEERING ANTENNA BEAM DIRECTION - An antenna comprising an IMD element and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements. | 08-07-2014 |
20140253398 | TUNABLE ANTENNA - A tunable antenna includes a ground plane, a first radiation unit and a second radiation unit. The first radiation unit includes a feeding portion and a coupling portion. The feeding portion is electrically connected to a signal source. The second radiation unit surrounds a part of the coupling portion and includes a grounding end and a switch unit. The grounding end is electrically connected to the ground plane. The switch unit is electrically connected to the grounding end and the ground plane selectively. | 09-11-2014 |
20140292598 | Antenna System With Tuning From Coupled Antenna - Electronic devices may include radio-frequency transceiver circuitry and antenna structures. The antenna structures may form a dual arm inverted-F antenna and an additional antenna such as a monopole antenna sharing a common antenna ground. The antenna structures may have three ports. A first antenna port may be coupled to an inverted-F antenna resonating element at a first location and a second antenna port may be coupled to the inverted-F antenna resonating element at a second location. A third antenna port may be coupled to the additional antenna. An adjustable component may be coupled to the first antenna port to tune the inverted-F antenna. The inverted-F antenna may be near-field coupled to the additional antenna so that the inverted-F antenna may serve as a tunable parasitic antenna resonating element that tunes the additional antenna. | 10-02-2014 |
20140306855 | TUNABLE MULTIBAND ANTENNA - A tunable multiband antenna includes a first radiation conductor spaced apart from a grounding conductor, a second radiation conductor spaced apart from the grounding conductor and connected to the first radiation conductor, a first tuning unit electrically connected between a signal source and the first radiation conductor and operable to provide different impedances and a second tuning unit electrically connected between the grounding conductor and the second radiation conductor and operable to provide different impedances. | 10-16-2014 |
20140313087 | Tunable Multiband Antenna With Passive and Active Circuitry - An electronic device may have an antenna for providing coverage in wireless communications bands of interest such as a low frequency communications band and a high frequency communications band. The antenna may have an antenna ground and an antenna resonating element. The antenna resonating element may have a high band arm that contributes to a first high band resonance in the high band and may have a low band arm that exhibits a low band resonance in the low band. A passive filter that is coupled between first and second portions of the antenna resonating element may be configured to exhibit a short circuit impedance associated with a bypass path that allows the antenna resonating element to contribute to a second high band resonance in the high band. A tunable inductor coupled to the antenna resonating element may be used to tune the low band resonance. | 10-23-2014 |
20140313088 | METHOD OF ANTENNA IMPEDANCE MISMATCH COMPENSATION BASED ON TIME-TO-DIGITAL CONVERTER PHASE ESTIMATION - A method for an antenna mismatch compensation may include determining an amplitude ratio by measuring a ratio of amplitudes of a reflected signal and an incident signal of an antenna tuning circuit coupled to an antenna. A time difference between the reflected signal and the incident signal may be measured. The time difference may be converted to a phase difference. A topology and one or more parameters of the antenna tuning circuit may be determined based on the amplitude ratio and the phase difference so that the antenna tuning circuit compensates for the antenna mismatch. | 10-23-2014 |
20140313089 | MULTI-ANTENNA SYSTEM - A multi-antenna system including a substrate, a ground element, a first antenna element, a second antenna element and a decoupling element is provided. The ground element is disposed on a first surface of the substrate, and the decoupling element is disposed on a second surface of the substrate. Ground portions of the two antenna elements and a first connection terminal of the decoupling element are electrically connected to the ground element. The decoupling element is spaced a first decoupling distance from a part of the first ground portion, and the decoupling element is spaced a second decoupling distance from a part of the second ground portion. A phase difference relative to the two antenna elements is generated by the decoupling element, the first decoupling distance and the second decoupling distance so as to eliminate interference energy between the two antenna elements. | 10-23-2014 |
20140333495 | Electronic Device Antenna With Multiple Feeds for Covering Three Communications Bands - Electronic devices may be provided that include radio-frequency transceiver circuitry and antennas. An antenna may be formed from an antenna resonating element and an antenna ground. The antenna resonating element may have a shorter portion that resonates at higher communications band frequencies and a longer portion that resonates at lower communications band frequencies. An extended portion of the antenna ground may form an inverted-F antenna resonating element portion of the antenna resonating element. The antenna resonating element may be formed from a peripheral conductive electronic device housing structure that is separated from the antenna ground by an opening. A first antenna feed may be coupled between the peripheral conductive electronic device housing structures and the antenna ground across the opening. A second antenna feed may be coupled to the inverted-F antenna resonating element portion of the antenna resonating element. | 11-13-2014 |
20140333496 | Antenna With Tunable High Band Parasitic Element - Electronic devices may be provided that include radio-frequency transceiver circuitry and antennas. An antenna may be formed from an antenna resonating element and an antenna ground. The antenna resonating element may have a shorter portion that resonates at higher communications band frequencies and a longer portion that resonates at lower communications band frequencies. The resonating element may be formed from a peripheral conductive electronic device housing structure that is separated from the antenna ground by an opening. A parasitic monopole antenna resonating element or parasitic loop antenna resonating element may be located in the opening. Antenna tuning in the higher communications band may be implemented using an adjustable inductor in the parasitic element. Antenna tuning in the lower communications band may be implemented using an adjustable inductor that couples the antenna resonating element to the antenna ground. | 11-13-2014 |
20140375514 | Antenna Tuning Circuit, Method for Tuning an Antenna, Antenna Arrangement and Method for Operating the Same - An antenna tuning circuit is provided. The antenna tuning circuit includes an antenna, an inductor and a variable capacitance. The antenna includes a first terminal, which serves as a feed terminal, and a second terminal, which is separate from the first terminal. The inductor and the variable capacitance are coupled to the second terminal, to tune the antenna. | 12-25-2014 |
20140375515 | FREQUENCY TUNABLE ANTENNA - A frequency tunable antenna is provided. Specifically, a device is provided that includes: a ground; an antenna feed; a first radiating arm connected to the antenna feed; a second radiating arm capacitively coupled to the first radiating arm; a switch connected to the second radiating arm, the switch having an open position and a closed position; an inductor connected to the switch on one side and the ground on an opposite side, and, a processor in communication with the switch, the processor configured to open and close the switch to tune a resonance frequency of at least the second radiating arm thereby changing a resonant length of the second radiating arm depending on whether the inductor is connected thereto. | 12-25-2014 |
20150009079 | FILTERING ANTENNA SYSTEMS, DEVICES, AND METHODS - The present subject matter relates to filtering antenna devices, systems, and methods in which a tunable antenna having one or more first variable impedance element is configured to selectively vary an impedance at a signal path output and a tunable filter is in communication between the signal path output of the tunable antenna and a signal processing chain. The tunable filter can have one or more second variable impedance element configured to provide a frequency-selective filtering response between the signal path output and the signal processing chain. A controller in communication with both the tunable antenna and the tunable filter can be configured for selectively tuning an impedance value of one or more of the one or more first variable impedance element or the one or more second variable impedance element. | 01-08-2015 |
20150022408 | ANTENNA WITH ACTIVE ELEMENTS - A multi-frequency antenna comprising an IMD element, one or more active tuning elements and one or more parasitic elements. The IMD element is used in combination with the active tuning and parasitic elements for enabling a variable frequency at which the antenna operates, wherein, when excited, the parasitic elements may couple with the IMD element to change an operating characteristic of the IMD element. | 01-22-2015 |
20150035710 | HIGH-GAIN DIGITALLY TUNED ANTENNA SYSTEM WITH MODIFIED SWEPT-BACK FRACTAL (MSBF) BLADE - A high-gain digitally tuned antenna system comprises a modified swept-back fractal (MSBF) radiator element, with the fractal preferably being a Sierpinski carpet fractal based on a parallelogram. A digital tuning circuit coupled to the radiator comprises an array of inductors which can be selectively connected to form a network which tunes the antenna system to a selected tuning frequency. The system is preferably arranged to selectively connect the inductors in series such that the combined inductances substantially cancel the capacitance of the radiator at a selected tuning frequency. The antenna system is preferably arranged to operate over the 30-88 MHz, 108-174 MHz, and 225-600 MHz bands, with a radiator height of 15″ or less. | 02-05-2015 |
20150035711 | ELECTRONIC DEVICE AND CONTROL METHOD THEREOF - According to at least one embodiment, an electric device, includes a first housing, a second housing, a proximity wireless communication module, an antenna, a detector, and a reactance adjustment circuit. The first housing includes a display. The second housing includes a keyboard including a plurality of keys. The antenna is connected to the proximity wireless communication module. The detector detects whether or not the keyboard is capable of receiving a code from the plurality of keys and outputs a signal corresponding to the detection result. The reactance adjustment circuit adjusts a reactance of the antenna according to the signal. | 02-05-2015 |
20150042525 | ANTENNA DEVICE AND WIRELESS COMMUNICATION TERMINAL - An antenna device ( | 02-12-2015 |
20150054697 | TUNABLE ANTENNA STRUCTURE AND WIRELESS COMMUNICATION DEVICE EMPLOYING SAME - A tunable antenna structure includes an antenna, a first switch circuit and a second switch circuit. The antenna structure includes a feeding point configured to feed current signal and a grounding point configured to be grounded. The first switch circuit includes a first plurality of loads and a first switch electronically coupled to the feeding point and the first plurality of loads. The first switch is configured to selectively couple one of the first plurality of loads to the feeding point. The second switch circuit includes a second plurality of loads and a second switch electronically coupled to the grounding point and the second plurality of loads. The second switch is configured to selectively couple one of the second plurality of loads to the grounding point. | 02-26-2015 |
20150054698 | ANTENNA TUNING CIRCUITRY WITH REDUCED INTERFERENCE - Antenna tuning circuitry includes an antenna tuning node, an antenna tuning switch, and a resonant tuning circuit. The antenna tuning node is coupled to a resonant conduction element of an antenna. The antenna tuning switch and the resonant tuning circuit are coupled in series between the antenna tuning switch and the antenna tuning node, such that the resonant tuning circuit is between the antenna tuning node and the antenna tuning switch. The resonant tuning circuit is configured to resonate at one or more harmonic frequencies generated by the antenna tuning switch such that a high impedance path is formed between the antenna tuning switch and the antenna tuning node at harmonic frequencies generated by the antenna tuning switch. Accordingly, harmonic interference generated by the antenna tuning switch is prevented from reaching the antenna, while simultaneously allowing for tuning of the antenna. | 02-26-2015 |
20150061950 | SMALL DIGITAL TUNABLE ANTENNA SYSTEMS FOR WIRELESS APPLICATIONS - The instant disclosure provides an antenna system with a generically small ground plane and a generic antenna radiating module, wherein the system further includes a matching circuit and a tunable capacitor each bring integrated with the ground plane and antenna in a novel configuration which provides improved antenna performance across multiple antenna resonances. | 03-05-2015 |
20150070229 | ANTENNA ARRAY STRUCTURE WITH DIFFERING ANTENNAS - An antenna array structure includes a plurality of antennas, wherein a first antenna has a first geometric shape, provides a first radiation pattern, and has a first frequency bandwidth. A second antenna has a second geometric shape to provide a second radiation pattern and has a second frequency bandwidth. The first and second frequency bandwidths at least partially overlap to include channels of interest. An antenna processing circuit sends one or more transmit signals to one or more of the antennas for transmission via one or more of the channels of interest and receives one or more receive signals from the one or more of the antennas or from another one or more of the antennas via the one or more of the channels of interest or from another one or more of the channels of interest. | 03-12-2015 |
20150102969 | RECONFIGURABLE ANTENNA - A reconfigurable antenna comprises two or more mutually coupled radiating elements and two or more impedance-matching circuits configured for independent tuning of the frequency band of each radiating element. In addition, each radiating element is arranged for selective operation in each of the following states: a driven state, a floating state and a ground state. | 04-16-2015 |
20150116170 | ANTENNA STRUCTURES AND METHODS THEREOF FOR DETERMINING A FREQUENCY OFFSET BASED ON A REACTANCE MEASUREMENT - A system that incorporates the subject disclosure may include, for example, a circuit for measuring a change in reactance of an antenna, determining a frequency offset of the antenna based on a change in an operating frequency of the antenna according to the change in reactance of the antenna, and adjusting the operating frequency of the antenna to mitigate the frequency offset of the antenna. Other embodiments are disclosed. | 04-30-2015 |
20150130676 | MULTI-FREQUENCY ANTENNA - A multi-frequency antenna includes a ground layer, at least one antenna unit and at least one antenna network. The antenna unit has its one end electrically connected to the ground layer and its other end electrically connected to the antenna network for generating at least one first resonance frequencies. The antenna network includes at least one feeding circuit, and at least one resonance unit. Each resonance unit includes at least one resonant segment. Each resonant segment is electromagnetically coupled with the adjacent ground layer to generate at least one second resonance frequency. Thus, the multi-frequency antenna is capable of generating multiple different resonance frequencies. | 05-14-2015 |
20150145737 | Reflective Beamforming For Performing Chip-to-Chip And Other Communications - A transmitter front-end for wireless chip-to-chip communication, and for other, longer-range (e.g., several meters or several tens of meters) device-to-device communication is disclosed. The transmitter front-end can include a plurality of reflector power amplifiers implemented on an IC chip and an on-chip or on-package antenna for wireless transmitting a signal to another IC chip or device. The plurality of reflector power amplifiers can reflect the radiation of the on-chip or on-package antenna in a particular pattern such that the effective radiation pattern is reinforced in a desired direction and suppressed in an undesired direction. This helps to reduce the required output power of the transmitter front-end and mitigate interference with other potential wireless chip-to-chip or longer-range communications. | 05-28-2015 |
20150295318 | ANTENNA APPARATUS - An antenna apparatus is provided. A control unit adjusts an adjustment voltage outputted to a parasitic ground antenna unit according to a first voltage generated by a sensing unit and a second voltage generated by a frequency detecting unit. | 10-15-2015 |
20150311585 | Near Field Tunable Parasitic Antenna - An antenna comprising: a conductive ground plane; a conductive half loop grounded to the ground plane and configured to be fed with a radio frequency (RF) signal; a single, unitary, three-sided, conductive cage positioned so as to cover the half loop; and dielectric mounts disposed between the cage and the ground plane such that the cage is electrically insulated from the ground plane. | 10-29-2015 |
20150326207 | SWITCH, ANTENNA TUNER, AND RADIO FREQUENCY APPARATUS - A switch, an antenna tuner, and a radio frequency apparatus are provided. The switch includes: 2N successively serially connected transistors. In the 2N successively serially connected transistors, control ends of any two transistors with closest odd sequence numbers are coupled to each other through a first resistor, and control ends of any two transistors with closest even sequence numbers are coupled to each other through a second resistor; a control end of an n-th transistor is coupled to a first control signal in a switch control signal, and a control end of an (n+1)-th transistor is coupled to the first control signal, where n is an integer that is greater than or equal to 1 and is less than or equal to 2N−1, N is an integer greater than or equal to 2, and the first control signal is used to control turn-on or turn-off of the switch. | 11-12-2015 |
20150333402 | Wireless Device Including a Multiband Antenna System - A wireless handheld or portable device includes an antenna system operable in a first frequency region and a higher, second frequency region. The antenna system comprises an antenna structure, a matching and tuning system, and an external input/output (I/O) port. The antenna structure comprises at least one radiating element including a connection point, a ground plane layer including at least one connection point, and at least one internal I/O port. At least one radiating element of the antenna structure protrudes beyond the ground plane layer. The antenna structure features at any of its internal I/O ports when disconnected from the matching and tuning system an input return loss curve having a minimum at a frequency outside the first frequency region of the antenna system. The matching and tuning system modifies the impedance of the antenna structure and provides impedance matching to the antenna system in the first and second regions. | 11-19-2015 |
20150340769 | SWITCH ASSEMBLY WITH INTEGRATED TUNING CAPABILITY - A multiport RF switch assembly with integrated impedance tuning capability is described that provides a single RFIC solution to switch between transmit and receive paths in a communication system. Dynamic tuning is integrated into each switch sub-assembly to provide the capability to impedance match antennas or other components connected to the multiport switch. The tuning function at the switch can be used to shape the antenna response to provide better filtering at the switch/RF front-end (RFFE) interface to allow for reduced filtering requirements in the RFFE. Memory is designed into the multiport switch assembly, allowing for a look-up table or other data to reside with the switch and tuning circuit. The resident memory will result in easier integration of the tunable switch assembly into communication systems. | 11-26-2015 |
20160020518 | SUPERIMPOSED MULTIMODE ANTENNA FOR ENHANCED SYSTEM FILTERING - The disclosure concerns a method of designing antennas to reduce the amount of rejection and complexity from the filter system. A superposition of a symmetrical frequency response from the antenna structure coupled with a non-symmetrical frequency response from a counterpoise structure generates increased rejection of out-of-band components. | 01-21-2016 |
20160028374 | APPARATUS AND METHOD FOR TUNING A RESONANCE FREQUENCY - There are disclosed various apparatuses and methods for tuning a resonance frequency. In some embodiments there is provided an apparatus ( | 01-28-2016 |
20160036127 | RECONFIGURABLE MULTI-MODE ACTIVE ANTENNA SYSTEM - A reconfigurable antenna system is described which combines active and passive components used to impedance match, alter the frequency response, and change the radiation pattern of an antenna. Re-use of components such as switches and tunable capacitors make the circuit topologies more space and cost effective, while reducing complexity of the control signaling required. Antenna structures with single and multiple feed and/or ground connections are described and active circuit topologies are shown for these configurations. A processor and algorithm can reside with the antenna circuitry, or the algorithm to control antenna optimization can be implemented in a processor in the host device. | 02-04-2016 |
20160043467 | ANTENNA WITH MULTIPLE COUPLED REGIONS - A device includes a plurality of antennas, including one or more active antennas, the antennas being configured in one of a plurality of possible configurations to achieve operation in WAN, LTE, WiFi, or WiMax bands, or a combination thereof. In some embodiments, a passive antenna is utilized with lumped loading to fix the antenna tuning state. A primary and auxiliary radiator can be included in the device and configured for WAN/LTE bands, while additional antennas can be incorporated for WiFi and WiMax bands. Various antenna configurations incorporate the antenna having multiple coupled regions. | 02-11-2016 |
20160049924 | RADIO COMMUNICATION USING A PLURALITY OF SELECTED ANTENNAS - The invention relates to a method for radio communication using a plurality of antennas, and to an apparatus for radio communication using a plurality of antennas. An apparatus for radio communication of the invention comprises: 4 antennas; a radio device; an antenna tuning apparatus having 2 antenna ports and 2 radio ports; a switching unit comprising 4 input ports each coupled to one of the antennas through a feeder, and 2 output ports, the switching unit operating in an active configuration in which it provides a path between any one of the output ports and one of the input ports, the active configuration being determined by a configuration instruction generated by the radio device; and a tuning control unit, the tuning control unit receiving a tuning instruction generated by the radio device, the tuning control unit delivering a plurality of tuning control signals to the antenna tuning apparatus. | 02-18-2016 |
20160111782 | DUAL-POLARIZED, BROADBAND METASURFACE CLOAKS FOR ANTENNA APPLICATIONS - A communication system that reduces the mutual influence of antennas operating in similar or different frequency bands. The communication system includes a first and a second antenna operating in a first and a second frequency band, respectively, and placed in close proximity to each other. The first antenna is covered by a conformal mantle metasurface with anti-phase scattering properties thereby cancelling the scattering in the second frequency band. The conformal mantle metasurface consists of a patterned metallic sheet comprising slits both in an azimuthal and a vertical direction to reduce both vertical and horizontal polarization scattering. When the first antenna is a low-band dipole antenna and when the second antenna is a high-band dipole antenna, the conformal mantle metasurface reduces the low-band blockage without disrupting the performance of both antennas in terms of radiation pattern and impedance matching. | 04-21-2016 |
20160111784 | TUNABLE MULTIPLE-RESONANCE ANTENNA SYSTEMS, DEVICES, AND METHODS FOR HANDSETS OPERATING IN LOW LTE BANDS WITH WIDE DUPLEX SPACING - The present subject matter relates to antenna systems, devices, and methods that provide efficient coverage of low frequency bands (e.g., 700 MHz-bands and 600 MHz-bands) for the new generations of mobile communication. For example, a dual-resonant radiating system can include a ground plane, a radiating coupler spaced apart from but in communication with the ground plane, and a ground plane extension in communication with the ground plane. In this arrangement, one or both of the radiating coupler and the ground plane extension are tunable to tune a dual-resonance frequency response. | 04-21-2016 |
20160126619 | WIRELESS COMMUNICATION UNIT, INTEGRATED CIRCUIT AND METHOD FOR ANTENNA TUNING - A wireless communication unit includes an antenna arrangement; an aperture tuner operably coupled to a first port of the antenna arrangement; a measurement circuit operably coupled to an antenna input feed point of the antenna arrangement and arranged to measure a parameter. A controller, operably coupled to the aperture tuner, is arranged to perform closed loop aperture tuning using the measured parameter. | 05-05-2016 |
20160156101 | MULTIBAND SWITCHABLE ANTENNA STRUCTURE | 06-02-2016 |
20160204520 | MULTI-BAND ANTENNA WITH A TUNED PARASITIC ELEMENT | 07-14-2016 |
20160254592 | Utilization of Antenna Loading for Impedance Matching | 09-01-2016 |
20160380356 | SUPER ULTRA WIDEBAND ANTENNA - An antenna having a radiator, a ground plane, and a stub configured to couple the radiator to the ground plane. The radiator may have nested radiators. The antenna covers frequency bands in a range of approximately | 12-29-2016 |
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20170237177 | WAVEGUIDE DEVICE, AND ANTENNA DEVICE INCLUDING THE WAVEGUIDE DEVICE | 08-17-2017 |
20190148841 | Antenna-transmitter Array | 05-16-2019 |