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With lumped reactance for loading antenna

Subclass of:

343 - Communications: radio wave antennas

343700000 - ANTENNAS

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
343750000 Adjustable reactance 17
343752000 Reactance at free end of active antenna 5
20090237316LOADED ANTENNA - A novel loaded antenna is defined in the present invention. The radiating element of the loaded antenna consists of two different parts: a conducting surface and a loading structure. By means of this configuration, the antenna provides a small and multiband performance, and hence it features a similar behavior through different frequency bands.09-24-2009
20120154231LOADED ANTENNA - A novel loaded antenna is defined in the present invention. The radiating element of the loaded antenna consists of two different parts: a conducting surface and a loading structure. By means of this configuration, the antenna provides a small and multiband performance, and hence it features a similar behavior through different frequency bands.06-21-2012
20120169556BROADBAND MULTI-FREQUENCY MONOPOLE FOR MULTI-BAND WIRELESS RADIO - A top load multi-band monopole antenna is utilized with an integrated resonator to achieving broad band and multiband performance for multiple frequency spectrums. The top loaded monopole antenna can utilize a low frequency band (e.g., approximately 700/800/900 MHz) and a high frequency band (e.g., approximately 1900 MHz to approximately 1500 MHz) by implementation of the resonator. The resonator matches an impedance of the upper portion of the top loaded monopole antenna for capabilities in a high frequency range without interference from any low frequency range.07-05-2012
20120026051ANTENNA ASSEMBLY HAVING REDUCED PACKAGING SIZE - An antenna assembly is provided, including a first radiative element. The first radiative element is oriented such that a first end of the radiative element is operatively connected to an antenna feed and at least a portion of the radiative element includes a first conical, helical coil. The first conical, helical coil reaches a maximum diameter at a point farthest from the antenna feed. A counterpoise structure includes one of an electrically conductive ground structure operatively connected to a ground associated with the antenna feed and a second radiative element operatively connected to the antenna feed and the first radiative element at the antenna feed.02-02-2012
20110309986MULTI-BAND ANTENNAS USING MULTIPLE PARASITIC COUPLING ELEMENTS AND WIRELESS DEVICES USING THE SAME - A multi-band antenna includes a ground plane, a branch active element connected to the ground plane, and a plurality of parasitic coupling elements connected to the ground plane. Respective ones of the parasitic coupling elements are electrically coupled to the branch active element such that the multi-band antenna resonates at a plurality of frequency bands.12-22-2011
343751000 Plural antennas 5
20130057443ANTENNA DEVICE, AND WIRELESS COMMUNICATION DEVICE - A radiators has looped radiation conductors, an inductor, a capacitor, a feed point on the radiation conductor. The capacitor is formed by a capacitance between the radiation conductors, and the capacitance varies depending on positions on the radiation conductors within a portion where the radiation conductors are close to each other. The radiators is configured to: resonate along a portion of the radiator at a low-band resonance frequency, the portion including the inductor and the capacitor and being along the loop of the radiation conductor, and resonate along a portion of the radiator at a high-band resonance frequency, the portion including a section along the loop of the radiation conductor, the section including at least one of the at least one capacitor, not including the inductor, and extending between the feed point and the inductor.03-07-2013
20090146893Electrically small antenna devices, systems, apparatus, and methods - The utilization of small antennas for mobile devices and for low frequency (long wavelength) applications is desired. Further, efficient use of transmission power is desirable, especially in mobile applications. For this purpose, a system is provided that includes one or more of: a multiple-resonator transmitter/receiver, a high bandwidth electrically small antenna, a resonator with a variable feed location, a resonator with a variable reactive component load, and a method for estimating a resonator system response to a component configuration and selected excitation.06-11-2009
20120200466Dual-Polarization Communication Antenna for Mobile Satellite Links - A dual-polarization communication antenna for satellite mobile links comprising a number of radiant elements etched on a substrate, a connector enabling the antenna elements to be connected to a power source, said antenna including one or more subantennas, each of said subantennas including: N dual-polarization antenna elements mounted in series with one another and linked together by means of a portion of a first conduction line C08-09-2012
20080204338METHOD AND SYSTEM FOR SOFTWARE DEFINED ANTENNA CONTROL - Methods and systems for reducing AM/PM and AM/AM distortion are disclosed and may comprise selectively coupling and impedance matching one of a plurality of tunable antennas to a single programmable output stage comprising a single power amplifier on a chip in a transmitter. A programmable matching circuit comprising adjustable inductance and capacitance may be used to impedance match the antenna to the output stage. The selected tunable antenna may be coupled to the output stage utilizing a programmable switch array, which may comprise at least one integrated transistor, for example. The tunable antennas may be designed to operate in different frequency bands and to be tuned within one or more frequency bands. The programmable matching circuit may be integrated on the chip or external to the chip. The matching circuit capacitance may be integrated on-chip, and the inductance may be located off-chip.08-28-2008
20130187817DUAL ANTENNA, SINGLE FEED SYSTEM - An antenna system includes a low-band antenna configured for low-band frequencies and a high-band antenna configured for high-band frequencies. The low-band antenna is configured so that high-band frequencies have a high impedance while the high-band antenna is configured so that low-band frequencies have a high impedance. A transmission line can be used to couple both antennas together and the transmission line can be used to add phase delay to the impedance of the low-band and high-band antennas so that the corresponding frequencies that the antennas are not configured for are shifted toward an infinite impedance point on a Smith chart.07-25-2013
Entries
DocumentTitleDate
20110193757GROUND RADIATOR USING CAPACITOR - A ground radiation antenna is disclosed. Herein, the ground radiation antenna provides a ground radiator inducing resonance by using the inductance of a ground. Since the ground radiator efficiently uses the inductance of the ground, the ground radiator may operate as a radiator of the ground radiation antenna by using a simple structure of combining a capacitive element with the ground. As described above, by providing an antenna radiator having a remarkably simple structure, the fabrication cost for the antenna may be decreased, and the size of the antenna may also be largely reduced.08-11-2011
20100045553LOW-PROFILE ANTENNA STRUCTURE - A low-profile antenna structure can control its directivity with great flexibility. Excited elements 02-25-2010
20130027260ANTENNA FEEDING STRUCTURE AND ANTENNA - The disclosure provides an antenna feeding structure having a low frequency loop, an intermediate frequency loop, and a high frequency loop, and generates resonance between the inductance of the intermediate frequency loop itself and a capacitive element in the intermediate frequency loop, wherein the antenna feeding structure is configured to be able to adjust the resonance frequency using the area of the loop and the value of the capacitive element, thereby allowing the antenna to have a broadband characteristic, and further, making it possible to easily design an antenna having a desired band.01-31-2013
20130088399ANTENNA HAVING A FEEDING STRUCTURE, AND A FEEDING METHOD - Provided is an antenna having broadband frequency characteristics due to the use of a power supply structural body having a closed loop consisting of a conductive circuit and an inductive element, such that the capacitance due to a capacitive element and the inductance due to the closed loop give rise to resonance, and the magnetic flux generated in the closed loop at the resonance frequency is coupled to a radiator. Also provided is an antenna having broadband characteristics in a plurality of bands.04-11-2013
20120218158EARPHONE ANTENNA OF MOBILE TERMINAL - An earphone antenna of a mobile terminal having a switching function by taking radiation characteristics of an antenna into consideration when the earphone antenna is used for receiving Frequency Modulation (FM) radio broadcasting and Digital Multimedia Broadcasting (DMB) is provided. The earphone antenna includes a first connector cable including a first antenna line for receiving DMB, a second connector cable including a second antenna line connected to the first antenna line for receiving FM radio broadcasting, and a switch positioned between the first connector cable and the second connector cable for electrically connecting and separating the first antenna line to and from the second antenna line. The single earphone antenna supports an FM radio broadcasting antenna and a DMB antenna.08-30-2012
20130057441Multi-Layered Multi-band Antenna with Parasitic Radiator - Embodiments provide multi-band, compound loop antennas (multi-band antennas). Embodiments of the multi-band antennas produce signals at two or more frequency bands, with the two or more frequency bands capable of being adjusted and tuned independently of each other. Embodiments of a multi-band antenna are comprised of at least one electric field radiator and at least one monopole formed out of the magnetic loop. At a particular frequency, the at least one electric field radiator in combination with various portions of the magnetic loop resonate and radiate an electric field at a first frequency band. At yet another particular frequency, the at least one monopole in combination with various portions of the magnetic loop resonate and radiate an electric field at a second frequency band. The shape of the magnetic loop can be tuned to increase the radiation efficiency at particular frequency bands and enable the multi-band operation of antenna embodiments.03-07-2013
20130057440Single-Sided Multi-band Antenna - Embodiments provide multi-band, compound loop antennas (multi-band antennas). Embodiments of the multi-band antennas produce signals at two or more frequency bands, with the two or more frequency bands capable of being adjusted and tuned independently of each other. Embodiments of a multi-band antenna are comprised of at least one electric field radiator and at least one monopole formed out of the magnetic loop. At a particular frequency, the at least one electric field radiator in combination with various portions of the magnetic loop resonate and radiate an electric field at a first frequency band. At yet another particular frequency, the at least one monopole in combination with various portions of the magnetic loop resonate and radiate an electric field at a second frequency band. The shape of the magnetic loop can be tuned to increase the radiation efficiency at particular frequency bands and enable the multi-band operation of antenna embodiments.03-07-2013
20120235871ANTENNA DEVICE AND RADIO FREQUENCY IC DEVICE - An antenna device is arranged to transmit or receive a radio frequency communication signal to or from an external device such as a reader/writer, and is arranged such that an antenna resonance circuit including an antenna coil and a capacitor is connected to an additional resonance circuit including an inductor and a capacitor. A radio frequency IC device preferably includes the antenna device and a radio frequency IC. The antenna device is constructed such that a change in characteristics thereof caused by a change in the distance between a radio frequency IC device and a reader/writer is minimized, and the radio frequency IC device performs communication with high reliability.09-20-2012
20120075153WIDEBAND AND MULTIBAND EXTERNAL ANTENNA FOR PORTABLE TRANSMITTERS - A communication device is presented that has a multiband antenna structure. A helical load extends from a monopole and reduces the resonance frequency of the monopole to the UHF band while leaving a GPS resonance of the monopole substantially unchanged. Helical proximate and distal portions are connected to the load such that the overall antenna structure has a VHF resonance. The helical portions have different characteristics and are configured to not substantially affect the UHF or GPS resonances. The helical portions have different pitch angles to permit minimization of the length of the combined helical portions while providing a desired operating VHF bandwidth.03-29-2012
20120032862ANTENNA ARRANGEMENT, DIELECTRIC SUBSTRATE, PCB & DEVICE - An antenna arrangement may include a ground plane, a feeding branch, a first branch and a second branch. The first branch may be longer than the second branch. The feeding branch may be capacitively coupled to the first branch. The feeding branch, the first branch, and the second branch include inductor loading and may be arranged in a single plane at a distance from the ground plane.02-09-2012
20130162489MULTIBAND ANTENNA - A multiband antenna includes at least two polygons. The at least two polygons are spaced by means of a non-straight gap shaped as a space-filling curve, in such a way that the whole gap length is increased yet keeping its size and the same overall antenna size allowing for an effective tuning of frequency bands of the anenna.06-27-2013
20080284667Modification of antenna radiation pattern using loading elements - Described is a technology by which an antenna circuit is modified by changing its loading element or elements to thereby provide a particular polar radiation/gain pattern. An antenna loading element is coupled to an antenna (e.g., a chip antenna of a mobile device, a printed copper monopole antenna, a meander line antenna, a Planar Inverted-F (type) Antenna (PIFA) or the like), and includes at least one segment that is not substantially parallel to the chip antenna. For example, in one implementation, the antenna element includes segments that are substantially orthogonal to a top-loaded chip antenna. The resulting antenna/antenna circuit modifies the polar radiation pattern, such that, for example, a mobile device can achieve more optimum gain when oriented for typical usage. One or more other segments may be bent to extend at another angle or angles to achieve a particular polar gain pattern.11-20-2008
20120098721Mobile Communication Device and Antenna - A mobile communication device is provided. The mobile communication device includes a system circuit board with a surface, a ground plane having a monopole slot on the surface, a microstrip feedline, and a metal element, wherein the ground plane has a longer edge and a shorter edge. The monopole slot has a first operating band and a second operating band. The microstrip feedline is located on the system circuit board, wherein one end of the microstrip feedline passes over the monopole slot, and the other end of the microstrip feedline is connected to a signal source. The metal element is electrically connected to the shorter edge of the ground plane, and is substantially perpendicular to the ground plane. A distance between the open end of the monopole slot and the shorter edge of the ground plane where the metal element is connected is shorter than 0.05 wavelength of the lowest operating frequency of the first operating band.04-26-2012
20090153422ANTENNAS WITH PERIODIC SHUNT INDUCTORS - An antenna may be formed from conductive regions that define a gap that is bridged by shunt inductors. The inductors may have equal inductances and may be located equidistant from each other to form a scatter-type antenna structure. The inductors may also have unequal inductances and may be located along the length of the gap with unequal inductor-to-inductor spacings, thereby creating a decreasing shunt inductance at increasing distances from a feed for the antenna. This type of antenna structure functions as a horn-type antenna. One or more scatter-type antenna structures may be cascaded to form a multiband antenna. Antenna gaps may be formed in conductive device housings.06-18-2009
20080211725Antenna having a plurality of resonant frequencies - An antenna having a plurality of resonant frequencies and including a ground plane having an edge; a feed point; a ground point; and 09-04-2008
20100134367X, Ku, K BAND OMNI-DIRECTIONAL ANTENNA WITH DIELECTRIC LOADING06-03-2010
20090295659RFID SYSTEM - A magnetic field focusing assembly includes a magnetic field generating device configured to generate a magnetic field, and a split ring resonator assembly configured to be magnetically coupled to the magnetic field generating device and configured to focus the magnetic field produced by the magnetic field generating device.12-03-2009
20100277383Multiprotocol antenna for wireles systems - First, second and third feed ports interface to an antenna that has an impedance disposed between its ends which are defined by the first and second feed ports. The third feed port interfaces to the antenna at an intermediate point between the ends. In a first mode (balanced mode) the impedance enables signals to/from the first and second feed ports to resonate along the whole of the antenna, and in a second mode the impedance enables signals to/from the third feed port to resonate along a portion of the antenna, the portion terminating at the impedance. In embodiments, the first mode is for RFID signals and the second mode is for any one or more of Bluetooth/WLAN/GPS/FM signals. The first and second mode may operate simultaneously. Also detailed is a method for making an electronic device having such an antenna.11-04-2010
20090179807Test System for Adjusting a Wireless Communication Device by Impedance Loading Features - A test system for adjusting a wireless communication device by impedance loading features includes a power supply for generating a plurality of voltages, a test fixture coupled to the power supply for generating impedances corresponding to a plurality of impedance loading areas, a test equipment coupled to a test point of the wireless communication device via the test fixture for measuring a plurality of radio frequency characteristic sets of the wireless communication device, and a decision device coupled to the test equipment for determining an optimal impedance loading area of the wireless communication device according to the plurality of radio-frequency characteristic sets.07-16-2009
20130120201ELECTRONIC APPARATUS FOR ISOLATING SIGNAL GENERATION DEVICE - An electronic apparatus is provided. The apparatus includes at least one signal generation device that generates a signal when power is supplied, a grounding plate in which a slot is formed, which grounds the signal generation device when the signal generation device is operated, and a blocking device interposed in the slot, which closes the slot, provides an output path of the signal, and blocks an inflow of the signal to the signal generation device when the signal generation device is operated.05-16-2013
20110221642ANTENNA DEVICE AND COMMUNICATION APPARATUS - There is provided an antenna device including a substrate, an earth section which is disposed on a portion of the substrate, a feed point which is disposed on the substrate, a loading section disposed on the substrate and constructed with a line-shaped conductor pattern which is formed in a longitudinal direction of an elementary body made of a dielectric material, an inductor section which connects one end of the conductor pattern to the earth section, and a feed point which feeds a current to a connection point of the one end of the conductor pattern and the inductor section, wherein a longitudinal direction of the loading section is arranged to be parallel to an edge side of the earth section.09-15-2011
20090256764Antenna device having an adjustable frequency - An antenna device includes an antenna and a transmission element. The antenna includes a grounding element and a radiating element. The radiating element is connected to the grounding element and is provided with a plurality of spaced apart feeding portions. The transmission element is connected selectively to one of said feeding portions. When the transmission element is connected to one of the feeding portions, the radiating element operates in a distinct frequency.10-15-2009
20120105292Communication Device and Antenna Thereof - A communication device is provided, including a ground element, a substrate and an antenna. The substrate is adjacent to the ground element. The antenna provides a first band and a second band, and the antenna is disposed on the substrate. The antenna includes a radiator, a feed conductor, a capacitor unit and a short-circuiting unit. An end of the feed conductor is connected to a signal source, and another end of the feed conductor is electrically connected to the radiator. The capacitor unit is disposed on the feed conductor. The short-circuiting unit includes a first short-circuiting path and a second short-circuiting path, wherein the first and a second short-circuiting paths electrically connect the radiator to the ground element, the first short-circuiting path has a first path length, the second short-circuiting path has a second path length, and the first and second path lengths are longer than 0.05 times that of a wavelength of a lowest frequency of the first band.05-03-2012
20120105291SOLID ANTENNA WITH UPPER-LOWER STRUCTURE - A solid antenna configured above a substrate includes a short portion, a feeding portion and a radiating portion including four radiators connected one-by-one. A first radiator includes a first upper section on a first plane, a first lower section on a second plane, and a first connection section connecting the first upper section to the first lower section. The second radiator includes a second upper section on the first plane, and a second connection portion connecting the second upper section to the first lower section. The third radiator includes a third upper section and a fourth upper section on the first plane, a second lower section on the second plane, a third connection section connecting the third upper section to the second lower section, and a fourth connection section connecting the second lower section to the fourth upper section. The fourth radiator extends towards the substrate.05-03-2012
20100265148 APPARATUS, METHOD AND COMPUTER PROGRAM FOR WIRELESS COMMUNICATION - An apparatus including a radiator having an electrical length; a first conductive element; an interconnector, connected to the radiator and to the first conductive element, having a first configuration and a second configuration, wherein the radiator has a first electrical length when the interconnector is in the first configuration and a second electrical length, different to the first electrical length, when the interconnector is in the second configuration.10-21-2010
20100225551Multi-Band Antenna - A multi-band antenna includes a ground portion, a radiating element spaced from the ground portion, a tuning conductor extending from the radiating element and parallel to the ground portion to form a gap therebetween, a short-circuit conductor interconnecting the ground portion and the radiating element, and a feed point disposed at the radiating element and adjacent to the short-circuit conductor. The radiating element, the short-circuit conductor and the feed point function as a first inverted-F antenna obtaining a first high frequency band, and a second inverted-F antenna obtaining a low frequency band and a second high frequency band higher than the first high frequency band. The ground portion and the tuning conductor cause a capacitance effect to shift the second high frequency band to be close to the first high frequency band. It can cover various wireless communication frequency bands.09-09-2010
20100207832ANTENNA ARRANGEMENT, PRINTED CIRCUIT BOARD, PORTABLE ELECTRONIC DEVICE & CONVERSION KIT - An antenna arrangement including a first antenna branch and a second antenna branch having a common feed point is provided. The first antenna branch includes a first conducting portion, a second conducting portion, and a first gap between the first and second conducting portions, and a plurality of inductor elements is connected in parallel across the first gap.08-19-2010
20120242552MULTI-BAND ANTENNA - A multi-band antenna includes two conductive wirings and unit circuits cascaded along the conductive wirings. Each unit circuit includes a communication unit, a first capacitor and a second inductor. The communication unit connects between the conductive wirings through a first inductor and a second capacitor connected in series with the first inductor. The first capacitor and the second inductor are inserted in at least one of the conductive wirings. The second inductor is connected in parallel with the first capacitor. Alternatively, the unit circuit includes a communication unit connecting between the conductive wirings through a first inductor, and a first capacitor inserted in at least one of the conductive wirings. The first inductor, the first capacitor, a third capacitor disposed between the conductive wirings, and a third inductor disposed on at least one of the conductive wirings satisfy a relationship expressed by the expression 2.09-27-2012
20080231528Cavity Antenna Excited with One or Several Dipoles - Cavity antenna excited with one or several dipoles in a single piece, which has on the element that excites the cavity a metallic plate connected to earth and which allows the input impedance of the antenna to be adjusted as well as the reflections in the radome, by means of the adjustment of the distance with respect to the back wall of the cavity, avoiding through the connection to earth that the antenna becomes charged electrostatically. The cavity assembly and the metallic plate allow a broader bandwidth, moreover a simpler control is achieved in the adjustment of the level of crosspolar polarization, as well as of the decoupling between dipoles by modification in the shape of the metallic plate. The grouping of the antennas in an array is possible in an immediate manner with no need to alter the size or shape of the cavities or of the dipoles which excite said cavities.09-25-2008
20100295743Antenna Structure With Reconfigurable Pattern And Manufacturing Method Thereof - The invention provides an antenna structure with reconfigurable pattern, which comprises a grounded plane, at least an active antenna electrically connected to an RF signal source, at least a current dragger electrically connected to the grounded plane, and a controller. The at least an active antenna and the at least a current dragger are distributed on or near the grounded plane. The controller disables or enables the at least a current dragger at an operating frequency band to switch the RF current applied to the grounded plane to flow into or against the at least a current dragger, thereby a plurality of radiation patterns may be configured.11-25-2010
20100302116MULTIPLE BAND COLLINEAR DIPOLE ANTENNA - A vertical dipole-style antenna operable over a wide range of predetermined frequencies that is made up of two collinear dipole antennas fed either in parallel through a single input connector or individually through two input connectors, contained within the same enclosure, where one dipole covers the VHF portion of the band from 30 MHz to 115 MHz and the other dipole covers the remainder of the band from 115 MHz to 512 MHz and together the two dipoles cover the very wide frequency band of 30 to 512 MHz through a single input connector. The VHF dipole is comprised of an existing vehicular dipole antenna design, while the UHF dipole antenna is comprised of radiating elements fed with a specially design coaxial transformer feedline with wide-band capacitive elements coupling the radiating elements to ground, providing variable loading to control the electrical length of the antenna.12-02-2010
20110025570ANTENNA AND COMMUNICATION DEVICE INCLUDING THE SAME - An antenna includes a dielectric substrate and an antenna element. The antenna element includes a power feeding element and a reference potential element. The power feeding element includes a first conductive layer formed over the dielectric substrate, the first conductive layer extending in a first direction and having a first length along the first direction. The reference potential element includes a second conductive layer formed over the dielectric substrate, the second conductive layer extending in a second direction opposed to the first direction from a second position, the second point being apart by a first distance from a first position on an end of the first conductive layer, and a third conductive layer formed over the dielectric substrate, the third conductive element extending from the second point in the first direction apart by a second distance from the first conductive layer and having a third length along the first direction.02-03-2011
20110210897ANTENNA DEVICE FOR A PORTABLE TERMINAL - An antenna device for a portable terminal includes: a ground pattern provided on one surface of a circuit board; a first antenna pattern configured to resonate at a first frequency band and provided on an opposite surface of the circuit board; and a second antenna pattern configured to resonate at a second frequency band different from the first frequency band and arranged along a periphery of the ground pattern. The second antenna pattern is a zeroth order mode resonator including a plurality of capacitors and a plurality of inductors. The antenna device easily secures the operation characteristics of different operation frequency bands and contributes to miniaturization of the portable terminal. Thus, a user can conveniently carry and use the portable terminal.09-01-2011
20110210899MULTI-FREQUENCY ANTENNA - A multi-frequency antenna (09-01-2011
20100053010Antennas with Polarization Diversity - A horizontally polarized antenna array allows for the efficient distribution of RF energy into a communications environment through selectable antenna elements and redirectors that create a particular radiation pattern such as a substantially omnidirectional radiation pattern. In conjunction with a vertically polarized array, a particular high-gain wireless environment may be created such that one environment does not interfere with other nearby wireless environments and avoids interference created by those other environments. Lower gain patterns may also be created by using particular configurations of a horizontal and/or vertical antenna array. In a preferred embodiment, the antenna systems disclosed herein are utilized in a multiple-input, multiple-output (MIMO) wireless environment.03-04-2010
20110210898GROUND RADIATION ANTENNA - A ground radiation antenna is disclosed. Herein, the ground radiation antenna provides a radiator-forming circuit, which is formed to have a simple structure using a capacitive element, as well as a feeding circuit suitable for the provided radiator-forming circuit. Thus, the structure of the antenna becomes simpler and the size of the antenna becomes smaller. Accordingly, the fabrication process of the antenna is simplified, thereby largely reducing the fabrication cost.09-01-2011
20110095952PLANAR MULTI-BAND ANTENNA - A planar multi-band antenna includes a substrate and a metal pattern. The metal pattern includes a first metal wire, a second metal wire, a third metal wire and a fourth metal wire. The second metal wire is disposed opposite to the first metal wire and has a grounding point. Two ends of the third metal wire are connected to the first metal wire and second metal wire, respectively, and the first metal wire is divided into a first radiation portion and a second radiation portion. The fourth metal wire is partially located between the second radiation portion and the second metal wire and forms multiple bends, and has a first impedance matching portion and a feed point, and part of the fourth metal wire coincides with the second radiation portion in a projection direction. By the activation of the feeding point and the grounding point associates with the impedance matching portion, the antenna has plural bands.04-28-2011
20100194653ANTENNAS WITH PERIODIC SHUNT INDUCTORS - An antenna may be formed from conductive regions that define a gap that is bridged by shunt inductors. The inductors may have equal inductances and may be located equidistant from each other to form a scatter-type antenna structure. The inductors may also have unequal inductances and may be located along the length of the gap with unequal inductor-to-inductor spacings, thereby creating a decreasing shunt inductance at increasing distances from a feed for the antenna. This type of antenna structure functions as a horn-type antenna. One or more scatter-type antenna structures may be cascaded to form a multiband antenna. Antenna gaps may be formed in conductive device housings.08-05-2010
20110187617Transmission/Reception element - A transmission/reception element includes: a plurality of metal layers each disposed with space from another; and a switch for controlling electrical coupling between the metal layers. The switch includes a contact-point group including a plurality of contact-point pairs each disposed in parallel between each two of the metal layers, and a drive section mechanically driving the contact-point group for state change of each of the contact-point pairs between in-contact and no-contact.08-04-2011
20120062434ANTENNA USING A REACTIVE ELEMENT - Disclosed is an antenna using a reactive element that is capable of individually controlling the respective resonance frequencies and resonance bandwidths. The antenna includes a radiator electrically coupled with a feeding point, a first reactive element electrically coupling a first point and a second point of the radiator, and a second reactive element electrically coupling a third point and a fourth point of the radiator. Here, the reactive elements are each coupled to the radiator in parallel, and because of the reactive elements, the antenna is made to have higher-order resonance frequencies that are not integer multiple in relation to a fundamental resonance frequency.03-15-2012
20120001815Multiband Antenna and Method for an Antenna to be Capable of Multiband Operation - A multiband antenna having a ground plane and a radiating portion is provided. The radiating portion includes a first metal portion, a second metal portion, an inductively-coupled portion and a third metal portion. The first metal portion has a first coupling metal portion and a signal feeding line electrically connected thereto. The second metal portion has a second coupling metal portion and a shorting metal portion electrically connected thereto with a shorting point connected to the ground plane. The first and second coupling metal portions are coupled and a capacitively-coupled portion is formed therebetween. The inductively-coupled portion is connected between the third and second metal portions. The first and second metal portions enable the antenna to generate a first operating band. The first, second and third metal portions enable the antenna to generate a second operating band, the frequencies of which are lower than those of the first operating band.01-05-2012
20120007786RESONATOR ANTENNA - A meta-material (01-12-2012
20120112974LOW PROFILE, BROAD BAND MONOPOLE ANTENNA WITH HEAT DISSIPATING FERRITE/POWDER IRON NETWORK AND METHOD FOR CONSTRUCTING THE SAME - An antenna operable over a predetermined range of frequency includes a transmission line, a transformer network connected to one end of the transmission line, and at least one ferrite/powder iron network connected to an opposite end of the transformer network. The ferrite/powder iron network changes the effective electrical length of the antenna such that as the frequency of operation changes, the current distribution above and below the network changes in corresponding manner. A second ferrite/powder iron network may be serially positioned with respect to the other network, wherein both function to reduce the current thereabove. Accordingly, as the frequency of operation increases, the electrical height of the antenna decreases. The network also encompasses a way to safely dissipate otherwise destructive heat created by the operation of the antenna system at high radio-frequency power.05-10-2012
20120026050Antenna Device - An antenna device includes: an antenna base plate having a shape of a flat plate; a capacity loading plate of a top capacity loaded type monopole antenna, the capacity loading plate arranged in parallel with the antenna base plate; and a planar antenna arranged between the antenna base plate and the capacity loading plate. A size of at least a part of the capacity loading plate in a direction of width of the capacity loading plate is less than about ΒΌ wavelength of receiving frequency of the planar antenna, and edges of the capacity loading plate in the direction of width of the capacity loading plate are folded back so that the capacity loading plate has a meander shape extending in a direction of length of the capacity loading plate.02-02-2012
20110102283Integrated Multi-Band Antenna - An integrated multi-band antenna comprises a first conductor, a second conductor, at least one inductor member, an extension conductor, and a grounding plane. The first conductor and a first branch of the second conductor form a first coupling region. The inductor member is arranged near the first branch. The extension conductor is arranged near a second branch of the second conductor and extends therefrom to form a terminal. The terminal and first conductor form a second coupling region. The first and second coupling regions are arranged on opposite sides of the first conductor. The second branch connects to the grounding plane. The present invention adopts a design incorporating the capacitive coupling of the conductors and the choke of the inductor member, integrates the standard frequency bands of the low-frequency and high-frequency systems of the digital TV to achieve a miniaturized digital TV antenna spanning a wide range of frequency bands.05-05-2011
20120127049FREQUENCY STABILIZATION CIRCUIT, FREQUENCY STABILIZATION DEVICE, ANTENNA APPARATUS AND COMMUNICATION TERMINAL EQUIPMENT, AND IMPEDANCE CONVERSION ELEMENT - A frequency stabilization device includes a first radiating element, a second radiating element, a feeding circuit connected to the first and second radiating elements, and a frequency stabilization circuit disposed between the feeding circuit and the first radiating element. The frequency stabilization circuit includes a primary-side series circuit connected to the feeding circuit and a secondary-side series circuit coupled to the primary-side series circuit via an electric field or a magnetic field. A first inductance element and a second inductance element are connected in series to each other, and a third inductance element and a fourth inductance element are connected in series to each other. The first and third inductance elements are coupled to each other, and the second and fourth inductance elements are coupled to each other.05-24-2012
20120162038MULTIBAND ANTENNA - A multiband antenna includes a feed unit, a transceiving unit, and a resonance unit positioned adjacent to but separate from the feed unit and the transceiving unit. When feed signals are input to the feed unit, the feed signals are transmitted to the transceiving unit to form current paths of different lengths, and the resonance unit is driven to resonate and generates additional current paths of different lengths. In this way, the transceiving unit and the resonance unit are enabled to respectively receive and send wireless signals of different frequencies, and thus the multiband antenna is capable of receiving and sending wireless signals in more than two frequency bands.06-28-2012
20120169555MULTIBAND ANTENNA - A multiband antenna includes a feed unit, a first transceiving unit, a second transceiving unit, and a resonance unit. When feed signals are input from the feed unit, the feed signals are respectively transmitted to the first transceiving unit and the second transceiving unit to enable the first transceiving unit and the second transceiving unit to respectively receive and send wireless signals of different frequencies. In addition, the resonance unit is driven to resonate and serve as a coupled ground resonator that generates additional current paths of at least two different lengths. Such that the resonance unit is enabled to receive and send wireless signals of at least two additional frequencies, and the multiband antenna is further enabled to receive and send wireless signals in more than two frequency bands.07-05-2012
20120188135COMMUNICATION DEVICE AND ANTENNA STRUCTURE THEREIN - A communication device including an antenna structure is provided, wherein the antenna structure includes a ground element, an antenna element, and a circuit element group. The ground element has a notch at one of its edges, and a long edge of the notch is at least two times longer than a short edge of the notch. The antenna element includes a metal portion disposed in the notch. Two ends of the metal portion are extended away from each other and are positioned substantially at or around two opposite edges of the notch. One end of the metal portion is coupled to the ground element, and the other end of the metal portion is a feeding terminal of the antenna element. The circuit element group includes at least a capacitive element and an inductive element.07-26-2012
20120256800MULTIBAND ANTENNA STRUCTURE AND METHODS - An antenna structure intended for small-sized mobile terminals. In one embodiment, the antenna structure comprises a main radiator for implementing the lowest operating band and other radiators for implementing at least one operating band in the high band. The structure also comprises a matching circuit, by which a plural (e.g., double) resonance is implemented for the main radiator in the range of the lowest operating band and the isolation is improved between the main radiator and another radiator. A reactive element is joined to the main radiator so that its electric size decreases in the high band and increases in the low band. The former strengthens the resonances in the high band, and thus results in rise in the efficiency in the high band.10-11-2012
20120127048ANTENNA MODULE - An antenna includes a first antenna portion, a second antenna portion, a third antenna portion, a feed portion, and a ground portion. The first antenna portion perpendicularly connects to the feed portion and the ground portion. The second antenna portion connects to the first antenna portion. The third antenna portion connects to the feed portion. The first antenna portion and the second antenna portion are both located on a plane perpendicular to the feed portion. The feed portion, the ground portion, and the third antenna portion are coplanar.05-24-2012
20120319909ANTENNA DEVICES AND PORTABLE ELECTRONIC DEVICES COMPRISING SUCH ANTENNA DEVICES - An exemplary embodiment of an antenna device generally includes a radiator structure with at least one first radiator element. The antenna device also includes a first feeding connection coupling the radiator structure to a first radio circuit for operation in a first frequency band. The antenna device further includes a second feeding connection coupling the radiator structure to a second radio circuit for operation in a second frequency band. A set of capacitors is connected to the radiator structure. This set includes at least one capacitor where a first end of each capacitor in the set is connected to the radiator structure and a second end is provided at ground potential, at least for the first frequency band. The sum of the values of the capacitors in the set is below 15 picofarads.12-20-2012
20080224935ANTENNA - An antenna includes inductance elements that are magnetically coupled together, an LC series resonant circuit that includes one of the inductance elements and capacitance elements, and an LC series resonant circuit that includes another of the inductance elements and capacitance elements. The plurality of LC series resonant circuits are used to radiate radio waves and are used as inductances of a matching circuit that matches an impedance when a power supply side is viewed from power supply terminals and a radiation impedance of free space.09-18-2008
20130176184WIRELESS COMMUNICATION DEVICE - A wireless communication device includes a flexible base material film, a flexible antenna conductor that is provided in substantially the entire region of one main surface of the flexible base material film and that includes a first radiation element and a second radiation element facing each other through a slit, an inductor substrate that is connected to the first radiation element and the second radiation element so as to extend across the slit, the inductor substrate including an inductance element, and a wireless IC element that is connected in parallel to the inductance element and that is mounted in the inductor substrate. The wireless IC element is connected to the first radiation element and the second radiation element so as to extend across the slit.07-11-2013
20110273348METAMATERIAL ANTENNA DEVICE WITH MECHANICAL CONNECTION - A wireless device incorporating an antenna made of Composite Right Left Hand (CRLH) structures, having a connection element coupling a portion of the antenna to a ground electrode. In some embodiments a wireless device has one or more mechanical connection units made of electrically conductive materials to provide both mechanical engagement and electrical conduction for the antenna devices.11-10-2011
20110273347APPARATUS AND ASSOCIATED METHOD FOR PROVIDING A FREQUENCY CONFIGURABLE ANTENNA EMPLOYING A PHOTONIC CRYSTAL - A frequency reconfigurable antenna may include at least two antenna segments and a photonic crystal positioned between the at least two antenna segments. The photonic crystal may selectably electrically connect or isolate the at least two antenna segments with respect to each other based on a conductive state of the photonic crystal.11-10-2011
20120249386ANTENNA DEVICE, CIRCUIT BOARD AND MEMORY CARD - A disclosed antenna device includes a substrate made of a dielectric material, an antenna element formed on one side of the substrate, and a ground element formed on another side of the substrate.10-04-2012
20130135164SMALL ANTENNA APPARATUS OPERABLE IN MULTIPLE BANDS - In a radiator, a large loop is formed by radiation conductors, first and second capacitors, and first and second inductors, and a small loop is formed by portions of the radiation conductors close to each other, the second capacitor, and the second inductor. The radiator is configured such that its first portion, second portion, and third portion resonate at predetermined frequencies, respectively. The first portion extends along the large loop, and includes the first inductor, the first capacitor, and one of the second inductor and the second capacitor. The second portion includes a section extending from a feed point to a second position through one of the first inductor and the first capacitor, and includes the small loop. The third portion includes a section extending from the feed point to the second position through the first capacitor.05-30-2013
20130147673METAMATERIAL LOADED ANTENNA STRUCTURES - Techniques and devices based on antenna structures with a MTM loading element.06-13-2013
20100309070MULTIBAND SINGLE-STRIP MONOPOLE ANTENNA - A multiband single-strip monopole antenna includes a dielectric substrate, a ground plane, and a radiating portion. The ground plane is disposed on one surface of the dielectric substrate without completely covering the surface of the dielectric substrate. The radiating portion is disposed on the surface of the dielectric substrate without overlapping the ground plane, and is internally embedded with an inductive element, via which a continuous path through the inductive element is formed between a start point and an open end of the radiating portion. Since the inductive element can compensate for an increased capacitive reactance caused by a reduced antenna length, good antenna matching can still be achieved even when the size of the antenna is reduced.12-09-2010
20120019422Damage Resistant Antenna - The invention provides a damage resistant antenna using a super-elastic flexible metallic material to form antenna radiating structures with a high damage threshold. The invention accounts for the electro-magnetic properties of the super-elastic flexible metallic material in the design of the shape and dimensions needed to form antenna radiating structures with consistent performance after repeated deploy, stow, and transport cycling of the antenna.01-26-2012
20130093637ANTENNA DIELECTRIC CAP LOADING - Antenna miniaturization is a big engineering challenge because of the fundamental limitations that restrict antenna performance. In the present invention a new dielectric cap loading technique for improving small antenna element performance exploiting the space capacitance is introduced. The cap loading technique can be easily realized e.g. by 3D dielectric blocks, such as ceramic blocks.04-18-2013
20130093636Broad-Band, Multi-Band Antenna - A broad-band, multi-band antenna. The antenna includes a ground terminal and a feed terminal, an elongated inductor, a first inductive element electrically coupled between the ground terminal and a first extremity of the elongated inductor, a capacitive element in parallel connection with the first inductive element, and a second inductive element electrically coupled between a second extremity of the elongated inductor and the feed terminal.04-18-2013
20120086617ANTENNA - An antenna includes a metal member, an antenna, and a capacitor. The metal member includes a plurality of sidewalls connecting with each other. The antenna includes a fixing end and a free end, the fixing end is fixed to the metal member. The capacitor connects with the metal member and the free end of the antenna.04-12-2012
20130207858ANTENNA-DEVICE SUBSTRATE AND ANTENNA DEVICE - Provided is an antenna-device substrate which is capable of flexibly adjusting multiple resonance frequencies, and also provided is an antenna device. The antenna-device substrate is provided with a substrate main body (08-15-2013

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