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| Number | Title | Issue Date |
| 7420521 | Wideband segmented dipole antenna A wideband antenna comprised of two or more conductive segments that are parasitically coupled. ... | 09/02/2008 |
| 7298346 | Broadband monopole antenna A wideband monopole antenna including an emitter which is embodied in the form of a disc and vertically arranged at a predetermined spacing above an electrically conductive base plane. The disc-shaped emitter includes a modified section initially having a circular o... | 11/20/2007 |
| 7132778 | Surface acoustic wave modulator An acoustic wave identification transponder device, having a substrate, an electroacoustic transfer generating an acoustic wave in said substrate and a set of encoding elements disposed in a path of the acoustic wave for modifying the acoustic wave, having elements ... | 11/07/2006 |
| 6970136 | Antenna apparatus An antenna apparatus coupled to a feeding point arranged on a cavity is disclosed. The apparatus includes a linear element extending from the feeding point and having a physical length that is shorter than a one-quarter wavelength. A half-wave antenna element is con... | 11/29/2005 |
| 6917334 | Ultra-wide band meanderline fed monopole antenna An ultra-wide bandwidth antenna. The antenna comprises a serially electrically connected top radiator, side radiator and bottom radiator. Geometrically, the top radiator, side radiator and bottom radiator form a U-shaped structure. A meanderline conductor is connect... | 07/12/2005 |
| 6914562 | RFID tag using a surface insensitive antenna structure An antenna system that is insensitive to the surface on which it is mounted for use with a RFID tag having a wireless communication device, including a plurality of conductive tabs coupled to the wireless communication device for receiving and radiating radio freque... | 07/05/2005 |
| 6677905 | Antenna device and mobile communications apparatus including the device An antenna device includes: a radiator having a meander portion; and a conductor shorter than the radiator which is disposed opposite to the radiator. A coaxial cable is connected to the radiator and conductor. Respective line lengths of the radiator and ... | 01/13/2004 |
| 6661382 | Antenna apparatus An antenna apparatus coupled to a feeding point arranged on a cavity is disclosed. The apparatus includes a linear element extending from the feeding point and having a physical length that is shorter than a one-quarter wavelength. A half-wave antenna ele... | 12/09/2003 |
| 6441791 | Glass antenna system for mobile communication The present invention provides a glass antenna device for mobile communication with suitable impedance matching for two different frequency bands. In this antenna device, the ends of a substantially straight first radiation antenna pattern and a second ra... | 08/27/2002 |
| 6218992 | Compact, broadband inverted-F antennas with conductive elements and wireless communicators incorporating same Inverted-F antennas having elongated, conductive elements for use within communications devices, such as radiotelephones, are provided. An elongated, meandering conductive element having a plurality of spaced-apart U-shaped undulations is maintained in ad... | 04/17/2001 |
| 5917457 | U-dipole radiating elements and antennas U-dipole radiating elements (10) and associated feed conductors (20, 22) are cut or stamped from brass sheet stock. Each U-dipole (10) is then bent up at 90 degrees to the signal distribution conductor (22) which is supported in front of a reflector (12).... | 06/29/1999 |
| 5757333 | Communications antenna structure A communications antenna structure, e.g. for a cellular radio base station comprises first and second bent folded monopole planar antenna elements mounted on a ground plane and disposed generally perpendicular to thereto. The antenna elements are mutually... | 05/26/1998 |
| 5640169 | Protected antenna apparatus A protected antenna apparatus including an elongated tube; a cable having an upper end with a pair of separate bare leads extending therefrom, a lower end with a connector secured thereto, and an intermediate portion extended between the ends; a twin-lead... | 06/17/1997 |
| 5600339 | Antenna An antenna comprising a first conductive element having a first end and a second end. The antenna is also comprised of a second conductive element having a first end and a second end. The second conductive element is adjacent and essentially in parallel t... | 02/04/1997 |
| 5521605 | Extendable antenna for a radio transceiver The present invention relates to an extendable antenna for use in a portable radio transceiver. The extendable antenna has a first antenna portion and a second antenna portion connected with a connecting portion of the first antenna portion. The first ant... | 05/28/1996 |
| 5451971 | Combined J-pole and transmission line antenna An antenna is provided comprising first (11), second (12) and third (13) line elements dispersed on first, second and third consecutive sides of a rectangle (10). The third line element is longer than the first line element by a length approximately equal... | 09/19/1995 |
| 5406295 | Window antenna for a motor vehicle body A window antenna for a motor vehicle body opening in which the antenna is used for mobile radio in a double-band operation with bands have a long wavelength L and a short wavelength K. Two monopoles L/4 and K/4 are electrically connected by a foot portion... | 04/11/1995 |
| 5392055 | Radio antenna A radio antenna which takes the form of a flexible elongated transmission cable. This cable encloses a pair of conductors which are insulated from each other. The cable is encased in an electrically conductive sheath. The received signal is picked up by t... | 02/21/1995 |
| 5065164 | Frequency range enchanced monopole antenna A monopole antenna adapted for efficiently radiating energy over an enhanced range of frequencies. The antenna includes a vertically inclined wire approaching one-quarter wavelength of said range of frequencies and a number of small-sized inductors instal... | 11/12/1991 |
| 4757322 | Mobile antenna unit A mobile antenna unit for use in the FM broadcast band which is adapted to be mounted on the windshield of the vehicle and which provides a gain and directivity pattern similar to those of an external whip antenna. The antenna element takes the form of a ... | 07/12/1988 |
| 4739336 | Log - periodic HF antenna system A plurality of dual feed half square wave antenna element (each of U-shaped onfiguration) are arranged in a log-periodic structure. The antenna elements are feed at the current loops; i.e., at the corners of the U-shaped antenna elements. A dual inphase fe... | 04/19/1988 |
| 4673949 | Wideband VHF/UHF radio antenna with quarter-wave transformer A radio antenna which operates over a broad frequency band, comprising a half-wave antenna tuned to a frequency beyond one cut-off frequency of the desired frequency band and a quarter-wave transformer tuned to a frequency beyond the other cut-off frequen... | 06/16/1987 |
| 4644364 | Method of and means for coupling a two conductor transmission line to an antenna Impedance matching between two conductor transmission lines and conventional antenna designs including a straight antenna element having an effective length of at least one-quarter wavelength in the operating frequency range and a zero impedance at one en... | 02/17/1987 |
| 4259673 | Stub matched antenna and method of feeding same An antenna having a unique method of feed is comprised of a vertical radiator and a driven element. The driven element is defined by an integral, substantially straight part. RF energy is fed into or extracted from the antenna by a coil perimetrically wou... | 03/31/1981 |
| 4138681 | Portable radio antenna An antenna for a hand-held radio transceiver includes first and second elements extending from the radio's case. The first element is comprised of a pair of series coupled members having electrical lengths of one-half and one-quarter wavelength, respectiv... | 02/06/1979 |
