Class / Patent application number | Description | Number of patent applications / Date published |
343790000 | Active sleeve surrounds feed line | 40 |
20080252542 | FULL BAND SLEEVE MONOPOLE ANTENNA WITH EQUIVALENT ELECTRICAL LENGTH - An inductance is coupled to the radiator and a set of inductances is coupled to the sleeve for increasing the resonant electrical lengths of the radiator and the sleeve. A set of impedances is coupled to the sleeve to absorb the reflective power of the radiator for increasing the bandwidth of the antenna. The winding layout of radiator and sleeve and the disposition of passive elements (such as inductance and resistance) allow the sleeve monopole antenna with full band FM radiation to have small size. | 10-16-2008 |
20090289866 | BROADBAND TERMINATED DISCONE ANTENNA AND ASSOCIATED METHODS - The discone antenna is a small communication antenna with broad voltage standing wave ratio (VSWR) bandwidth. The discone antenna includes a conical antenna element and a disc antenna element adjacent the apex thereof and including a proximal electrically conductive planar member and a spaced apart distal electrically conductive planar member being electrically connected together at respective peripheries thereof defining a folded ground plane. An antenna feed structure is coupled to the disc and conical antenna elements and includes a first conductor coupled to the proximal electrically conductive planar member, and a second conductor coupled to the conical antenna element and to the distal electrically conductive planar member. An impedance element, such as a resistor, may be connected between the second conductor and the distal electrically conductive planar member. | 11-26-2009 |
20100013728 | Antenna Design - An antenna core design. An antenna assembly is provided for use in tracking and locating equipment used to track and locate tools with underground drilling systems. The antenna assembly comprises an elongate core, a plurality of metal strips supported on an external surface of the core, an insulating material adapted to insulate each of the plurality of metal strips from the other metal strips and the core, and a wire disposed around the external surface of the strips. Alternatively the antenna assembly comprises an elongate core, an insulating material disposed around a perimeter of the core, and a wire disposed around the insulating material. The core has a plurality of slots cut from one end of the core so that the core defines a plurality of metal strips. A support ring is disposed on the internal surface of the core to support the metal strips. | 01-21-2010 |
20100026599 | OMNIDIRECTIONAL ANTENNA - The omnidirectional antenna of the present invention comprises a dielectric core | 02-04-2010 |
20100045558 | Dual-Band Dipole Microwave Ablation Antenna - A triaxial microwave antenna assembly is disclosed. The triaxial microwave antenna includes a feedline having an inner conductor, a central conductor disposed about the inner conductor and an outer conductor disposed about the central conductor and a radiating portion including a high frequency radiating section and a low frequency radiating section. | 02-25-2010 |
20100053015 | Microwave Antenna - According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port. | 03-04-2010 |
20100245200 | Multi-Band Antenna Assemblies - A multi-band antenna assembly that is operable to receive and/or transmit signals at one or more frequencies generally includes at least two radiating elements, a transmission line coupled to each of the at least two radiating elements, and a tunable match resonator coupled to the transmission line. The tunable match resonator is operable to vary input impedance of a signal received and/or transmitted by the antenna assembly by changing an electrical field within the tunable match resonator. | 09-30-2010 |
20120249390 | ANTENNA AND WIRELESS DEVICE PROVIDED WITH SAME - There is provided an antenna comprising: a ground conductor; and an antenna element portion for sending and receiving electromagnetic wave signals, the antenna element portion comprising: a coaxial cable including a center conductor and an outer conductor; a feeding point connected to a feeding system and disposed between the ground conductor and a first end of one of the center and outer conductors; a short-circuit portion electrically connecting the ground conductor and a first end of the other one of the center and outer conductors; and a conductor connection portion electrically connecting second ends of the center and outer conductors each other. In addition, an overall length of the coaxial cable is not more than ½ of a wavelength corresponding to the minimum series resonance frequency; and a distance between the center and outer conductors is not more than 1/100 of a wavelength corresponding to the minimum operation frequency. | 10-04-2012 |
20120268336 | ELECTROMAGNETIC WAVE RADIATION COAXIAL CABLE AND COMMUNICATION SYSTEM USING THE SAME - An electromagnetic wave radiation coaxial cable and a communication system using the same. The electromagnetic wave radiation coaxial cable includes an inner conductor which is formed of a conductor and extends along a cable axis, an insulator covering the inner conductor, and an outer conductor spirally wound around the insulator in a single winding at a predetermined pitch to provide a gap from which a part of the insulator is exposed. Following formula is established: | 10-25-2012 |
20120319914 | ANTENNA - An antenna that can be used in a wide band and can arbitrarily adjust the working frequency band to a higher or lower frequency band includes a resonant conductor tube located on the outside of a feeding section of an unbalanced feed member and covering the feeding section, a ground conductor tube located on the outside of a passive section of the unbalanced feed member and covering the passive section, and a connection conductor guide located between the conductor tubes and the unbalanced feed member. In the antenna, the conductor tubes and the unbalanced feed member are electrically fixed to the connection conductor guide via a fixing unit, and the feeding section of the unbalanced feed member has an exposed portion with a predetermined size, the exposed portion exposed from the resonant conductor tube outward in the length direction thereof. | 12-20-2012 |
20130234906 | Sleeve Dipole Antenna Microphone Boom - Methods and apparatuses for antennas in head worn devices are disclosed. In one example, a boom assembly includes an integrated sleeve dipole antenna. A first boom component is configured as a sleeve radiating element and a second boom component is configured as a radiating element. | 09-12-2013 |
20140015726 | RADIOFREQUENCY CIRCUIT ASSEMBLY - Disclosed herein are embodiments of a radiofrequency circuit assemblies and dielectrically-loaded antennas for use in the assembly, the assembly and the antenna being for operation at a frequency in excess of 200 MHz. The disclosed assemblies and antennas should not be construed as limiting in any way. Instead, the present disclosure is directed toward all novel and nonobvious features and aspects of the various disclosed embodiments, alone and in various combinations and subcombinations with one another. | 01-16-2014 |
20140176385 | COMPACT CYLINDRICALLY SYMMETRIC UHF SATCOM ANTENNA - A cylindrically symmetric satellite antenna that provides directional and omnidirectional operating modes in a compact form factor. Feed points located at the top of the cylindrical structure provide increased platform isolation. Combining networks, disposed below or within the cylindrical structure, may be replaced with inexpensive baluns composed of coaxial line sections. | 06-26-2014 |
20150048987 | SLEEVE ANTENNA AND WIRELESS COMMUNICATION DEVICE - To provide a sleeve antenna that can be attached to a chassis while maintaining favorable antenna gain even when using a small circuit board, and a wireless communication device. | 02-19-2015 |
343791000 | With coaxial active rod | 14 |
20090073069 | Robust communications antenna - A robust low profile antenna well suited for deployment on the lids of cavities, such as manholes is described. The antenna is constructed from a coaxial cable for use proximate to a structural surface. The antenna is formed by folding back an outer metallic braid of an end of the coaxial cable to a length that approximately matches ¼ of a wavelength of a desired operating frequency times a velocity factor of the coaxial cable. Next, the radiative element is formed by exposing the center conductor from the end of the coaxial cable to a length that approximately matches ¼ of the wavelength of the operating frequency multiplied by the composite velocity factor being based on a dielectric encasing of the coaxial cable and the distance of the antenna from the structural surface. The antenna is oriented substantially parallel to the structural surface. The resulting antenna is of a comparable size to the coaxial cable. | 03-19-2009 |
20090115677 | Dual-band monopole antenna with antenna signal fed through short-circuit terminal of transmission line - Disclosed is a dual-band monopole antenna with antenna signal fed through a short-circuit terminal of a transmission line load. The dual-band monopole antenna includes an antenna extension section and a transmission line load. The antenna extension section has a top terminal and a transmission line connection terminal. The transmission line connection terminal is connected to the transmission line load. The transmission line load includes a core transmission line, an outer circumferential conductor, and a dielectric layer. The core transmission line has an extension section connection terminal and a signal feeding terminal. The extension section connection terminal is connected to the transmission line connection terminal of the antenna extension section. The outer circumferential conductor circumferentially surrounds and is spaced from the core transmission line by a given distance and the outer circumferential conductor has an open terminal and a short-circuit terminal. | 05-07-2009 |
20090115678 | Transmission line loaded dual-band monopole antenna - Disclosed is a transmission line loaded dual-band monopole antenna, which realizes operation in dual bands with a single antenna. The dual-band monopole antenna includes a monopole antenna and a transmission line load. The monopole antenna has a signal feeding terminal and a load connection terminal. The load connection terminal is connected to the transmission line load. The transmission line load includes a core transmission line, an outer circumferential conductor, and a short-circuit section. The core transmission line has an antenna connection terminal and a short-circuit terminal. The antenna connection terminal is connected to the load connection terminal of the monopole antenna. The outer circumferential conductor circumferentially surrounds and is spaced from the core transmission line and the outer circumferential conductor has an open terminal and a short-circuit terminal. The opening of the open terminal of the outer circumferential conductor faces the antenna connection terminal of the core transmission line so that the outer circumferential conductor forms an open structure facing the monopole antenna. | 05-07-2009 |
20090303149 | Leaky Coaxial Antenna - The invention relates to a leaky coaxial antenna ( | 12-10-2009 |
20100085267 | MONOPOLE ANTENNA - Provided is a small monopole antenna, which can generate a plurality of resonant frequencies, have a high antenna efficiency, and be easily installed. The antenna includes a first antenna element formed of a coaxial cable; a second antenna element sealing the first antenna element and sharing a feed point with the first antenna element; and a feeder cable for feeding electric power to the feed point. This antenna is applied as a small antenna. | 04-08-2010 |
20110285597 | MULTI-BAND ANTENNA ASSEMBLY - An antenna assembly ( | 11-24-2011 |
20120068902 | ELECTRICALLY SMALL ULTRA-WIDEBAND ANTENNA FOR MOBILE HANDSETS AND COMPUTER NETWORKS - An antenna arrangement ( | 03-22-2012 |
20120133565 | CABLE ANTENNA APPARATUS AND SYSTEM - Embodiments of an apparatus and system are described for a coaxial antenna. An apparatus may comprise, for example, an integrated circuit and a coaxial cable coupled to the integrated circuit and arranged to operate as an antenna, the coaxial cable comprising an inner conductor layer and at least one insulator layer, wherein one or more portions of the inner conductor layer are exposed to allow the exposed inner conductor layer to operate as a radiating element for the antenna. Other embodiments are described and claimed. | 05-31-2012 |
20120162041 | Monofrequency Antenna Integrated with Coaxial Feeder Cable - A monofrequency antenna integrated with a coaxial feeder cable comprises a first conductor, a second conductor and a feeder cable. The feeder cable includes a coating layer, an outer wire, an insulating layer and a central wire. The coating layer is formed on the outmost surface of the feeder cable. The outer wire is formed on the inner surface of the coating layer, extends in two opposite directions, and connects with the second conductor. The insulating layer is formed on the inner surface of the outer wire and extends in two opposite directions. The first conductor is formed on the inner surface of the insulating layer and extends along one direction. The central wire is formed on the inner surface of the insulating layer and extends along a direction opposite to the direction along which the first conductor extends. The present invention simplifies antenna structure and promotes transmission efficiency. | 06-28-2012 |
20120274529 | ANTENNA - An antenna is realized by a simple mechanism without use of a dedicated antenna element. An antenna includes a first conductor | 11-01-2012 |
20130016022 | Hollow Core Coaxial Cables and Methods of Making the SameAANM Heiks; NoelAACI RadfordAAST VAAACO USAAGP Heiks; Noel Radford VA USAANM Sherrer; DavidAACI RadfordAAST VAAACO USAAGP Sherrer; David Radford VA US - Disclosed and claimed herein is a hollow core coaxial cable, having a dielectric capillary with an inside wall and an outside wall, an inner conductive layer on the inside wall of the hollow core coaxial cable and an outer conductive layer on the outside wall of the hollow core coaxial cable, the conductive layers may be patterned. Further disclosed is a method of making the hollow core coaxial cable. Further disclosed are holey fiber coaxial cables, having a holey fiber capillary having an inside wall and an outside wall, an inner conductive layer on the inside wall of the hollow core coaxial cable and an outer conductive layer on the outside wall of the hollow core coaxial cable, the conductive layers may be patterned. | 01-17-2013 |
20140071012 | OPERATION OF AN ANTENNA ON A SECOND, HIGHER FREQUENCY - Systems and methods are provided for operating an existing antenna at a second, higher frequency. To this end, an antenna system includes an antenna feed and a first antenna assembly electrically connected to the antenna feed at a first end. The first antenna assembly has a first electrical length for a first frequency band and includes a substantially linear segment. A second antenna element is connected to the first antenna assembly and extends away from the first end of the first antenna assembly in a direction substantially parallel to the substantially linear segment. The second antenna element has an electrical length of one-quarter of a wavelength associated with a second frequency. | 03-13-2014 |
20140247193 | DIPOLE ANTENNA ASSEMBLY HAVING AN ELECTRICAL CONDUCTOR EXTENDING THROUGH TUBULAR SEGMENTS AND RELATED METHODS - A dipole antenna assembly may include a first tubular dipole element and a coaxial antenna feed extending through a proximal end of the first tubular dipole element. The coaxial antenna feed may have an inner conductor, an outer conductor, and a dielectric therebetween. The inner conductor may extend outwardly beyond a distal end of the first tubular dipole element. The outer conductor may be coupled to the distal end of the first tubular dipole element. The dipole antenna assembly may further include a second tubular dipole element with a proximal end being adjacent the distal end of the first tubular dipole element, and being coupled to the inner conductor. The second tubular dipole element may include first and second tubular segments and an electrical conductor extending through the first and second tubular sections and being coupled thereto at both the proximal and distal ends. | 09-04-2014 |
20150109180 | EXTENSIBLE AND RECONFIGURABLE ANTENNA - An extendable and reconfigurable antenna apparatus includes at least one conductive monopole antenna element. An extended antenna element is provided including a junction. A conductive tube is mechanically coupled to the extended antenna element by an insulating coupler to form an assembly. Placement of the assembly over the monopole antenna element converts the monopole antenna element into a center conductor of a coaxial transmission line electrically coupled to the extended antenna element at the junction. | 04-23-2015 |
343792000 | Doublet type | 12 |
20080272975 | MULTI-FEED DIPOLE ANTENNA AND METHOD - A multi-feed dipole antenna and method. Provides a volumetrically efficient antenna with wide radiation pattern bandwidth and wide impedance bandwidth that are relatively independent. Driving the antenna at multiple locations provides for a half wavelength dipole antenna with a wider frequency range than any other known fat dipole of similar volume. The apparatus is constructed from brass or any other suitable metal without requiring dielectric loading and without requiring direct coupling on the outside of the tubes. The apparatus utilizes a parasitic center tube with two end tubes that are driven by a collinearly mounted metal rod that is driven from the midpoint. Insulators hold the parasitic tube to the end tubes. The parasitic tube allows for induced currents to flow on the surface of the tube which allow for operation of the dipole over a wide frequency range. | 11-06-2008 |
20100045559 | Dual-Band Dipole Microwave Ablation Antenna - A microwave antenna assembly is disclosed. The microwave antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having an operative length and an inductor. The inductor is adapted to adjust the operative length of the dipole antenna based on the frequency of the microwave energy supplied to the dipole antenna. | 02-25-2010 |
20100220026 | Broadband Lossless Dipole Antenna - The present invention relates to a broadband lossless dipole antenna which is supplied at two supply points (M | 09-02-2010 |
20100283699 | BROADBAND WHIP ANTENNA - A shortened multi-band antenna includes in-line dipoles, selected elements of which having shielded meanderline chokes to be able to switch from an extended dipole at the lower VHF frequencies to a shortened dipole for the UHF band. Additionally, the staggered asymmetric meanderline configuration permits overall size reduction, whereas antenna construction includes an intermediate fiberglass layer over which conductive foil is placed for tuning and for parasitic radiator purposes to improve the gain of the UHF dipole in the upper regions of the band at 450 megahertz. Additionally, at the low end of the 30 megahertz band a sleeve is positioned between the base of the lowest dipole element and ground, with the sleeve provided with two parallel RLC circuits tuned to different bands to improve VSWR at the low end of the VHF band and to eliminate unwanted nulls. | 11-11-2010 |
20120154236 | Multiband whip antenna - A multi-band whip antenna having a 30 MHz to 2 GHz bandwidth and an L-band dipole has its coverage extended up to 6 GHz by eliminating nulls and reducing VSWR problems that are cured through the utilization of a sleeve over the feedpoint of the L-band antenna. Chokes in the form of sleeves are provided at either end of the L-band dipole to shorten the L-band antenna for preventing reverse polarity currents at the L-band antenna feedpoint, with the antenna further including the use of double shielded meanderlines to provide improved performance between 410-512 MHz and in which a capacitance sleeve is added at the bottom of the L-band antenna to effectively elongate the antenna below the L-band to permit operation below 700 MHz. | 06-21-2012 |
20120182196 | Low-Profile Broadband Multiple Antenna - A low-profile broadband multiple antenna, comprises: a dipole arranged in the top part of said antenna, said dipole comprising at least one first top antenna element connected to the core of a multi-axial cable comprising a core and n sheaths and the bottom individual element of which is connected to the first sheath adjacent to the core, a connection device positioned between a top element of a dipole and the bottom element of said dipole the top element is connected to the sheath of index (k−1) of the multi-axial cable after the assembly comprising the core and the sheaths of index (1 to k−1) has been wound in Q turns around a magnetic core and the bottom element of the dipole is connected to the sheath of index k, and said connection device comprises at least one single-wire winding of P turns on the same magnetic core linking said bottom element of said dipole to the sheath of index (k−1), at the point corresponding to the start of the winding in order to provide the broadband impedance matching and the power supply for the dipole. | 07-19-2012 |
20120194401 | End-Fed Sleeve Dipole Antenna Comprising a 3/4-Wave Transformer - An end-fed sleeve dipole is provided herein with improved impedance match and increased bandwidth by incorporating a ¾-wavelength transformer in the antenna design. The ¾-wavelength transformer is compatible with a number of different choking schemes, including but not limited to, a single ¼-wave choke sleeve, a single ¼-wave choke sleeve with additional ferrite beads, and two or more ¼-wave choke sleeves with or without ferrite beads. In some embodiments, one or more shunt resonators may be used to provide additional impedance compensation. | 08-02-2012 |
20130009835 | COBRA ANTENNA - The present invention relates to a small cobra antenna that has a high performance as an antenna gain, and minimizes the effect of the length of the coaxial wire. | 01-10-2013 |
20130300623 | Nichrome Resistive Active Element Broad Band Antenna - A nichrome resistive element is used in a closed electrical circuit to form an antenna. | 11-14-2013 |
20140159975 | WIDEBAND COMPACT DIPOLE MANPACK ANTENNA - An compact manpack format antenna operating over a broad bandwidth. In one arrangement, the antenna is formed from a set of five hollow cylindrical conductive elements. Several cylinders provide, for example, a VHF/UHF radiator section and other cylinders form an L-band radiator section. A bottom leg of the L-band section operates as part of the VHF/UHF section via coupling between that lower L-band leg and the VHF/UHF section. This coupling arrangement reduces the required overall physical length of the antenna. | 06-12-2014 |
20150295321 | UHF SATELLITE COMMUNICATIONS ANTENNA - A UHF satcom antenna comprises a hollow cylinder; an annular substrate disposed on a base of the hollow cylinder; a circular substrate coplanar and concentric to the annular substrate; a plurality of bow-tie antenna elements; a plurality of rectangular antenna elements and a plurality of open-sleeve elements. The antenna system includes at least one feed line extending through the hollow cylinder and the circular substrate and electrically connects to the bow-tie elements. The hollow cylinder may comprise a dielectric material. Provided on the annular substrate, the bow-tie elements extend radially outward from the center of the annular substrate. The rectangular elements are electrically coupled to the plurality of bow-tie antenna elements and are provided on the outer surface of the hollow cylinder. Provided on both the annular substrate and the outer surface of the hollow cylinder, the open-sleeve elements act as parasitic antenna elements for the bow-tie antenna system. | 10-15-2015 |
20150311584 | WIDEBAND WHIP ANTENNA - A wideband antenna, including a radio-frequency connector providing a radio-frequency current, an elongate radiating element galvanically connected to the radio-frequency connector, the elongate radiating element forming a galvanic radio-frequency current path for the radio-frequency current and at least one generally cylindrical conductive element enclosing at least a portion of the elongate radiating element and forming a capacitive radio-frequency current path for the radio-frequency current. | 10-29-2015 |