With Reflector And Director Patents (Class 343/819)
  • Patent number: 9059515
    Abstract: A dual band antenna providing a high forward gain includes a radiator, a director disposed in front of the radiator, and a reflector disposed behind the radiator. A dual resonance notch antenna including a conducting plate and a feeding portion is used as the radiator. The director includes a conducting plate and a short-circuiting portion and the reflector includes a conducting plate and a short-circuiting portion. Each conducting plate is disposed such that the direction of a normal to the conducting plate is a front-rear direction. Two slots having different lengths are formed in each conducting plate so as to be aligned with each other. The feeding portion is disposed in one of the slots. Each short-circuiting portion is disposed in one of the two slots at a position corresponding to the feeding portion.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: June 16, 2015
    Assignee: HITACHI METALS, LTD.
    Inventor: Haruyuki Watanabe
  • Patent number: 9037079
    Abstract: A mobile device with an underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms. The portable device may be wearable.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: May 19, 2015
    Assignee: WFS TECHNOLOGIES LTD.
    Inventors: Derek Wolfe, Brendan Hyland
  • Patent number: 9013362
    Abstract: The outdoor antenna includes multiple directors located respectively on a main rod and two assistant rods, and an inner-swing arm and an outer-swing arm fixed on the main rod and coupled with two ends of the assistant rods. When the inner-swing arm and the outer-swing arm are expanded, the assistant rods are fixed on two sides of the main rod; when the inner-swing arm and the outer-swing arm are folded, the assistant rods are positioned in parallel with the main rod. In use, the inner-swing arm and the outer-swing arm are expanded to allow the assistant rods to move toward the two sides of the main rod and maintain in a certain spatial distance to receive as many radio signals as possible. During transportation and storage, the assistant rods can lean against two sides of the main rod, so that occupied space is reduced to achieve usability.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: April 21, 2015
    Inventor: Kendy Yang
  • Publication number: 20150070235
    Abstract: An antenna device includes a first substrate, a feeder line which is disposed in the first substrate, a grounding conductor which is disposed in the first substrate, a first radiation element which is electrically connected to the feeder line in the first substrate, a second radiation element which is electrically connected to the grounding conductor and is disposed substantially in parallel with the first radiation element in the first substrate, a first reflector which is disposed in the first substrate, and a second reflector which is disposed in the first substrate so as to be separated by a predetermined distance from the first radiation element or the second radiation element in at least one of longitudinal directions of the first radiation element and the second radiation element.
    Type: Application
    Filed: February 4, 2014
    Publication date: March 12, 2015
    Inventors: Yuichi Kashino, Hiroyuki Uno, Suguru Fujita, Ryosuke Shiozaki
  • Patent number: 8902117
    Abstract: In each parasitic element array, each of parasitic elements has a strip shape substantially parallel to a longitudinal direction of a dipole antenna, and the parasitic elements are formed at predetermined intervals. For example, the interval is set to be equal to or smaller than ? of a wavelength ? of a high-frequency signal to be fed to a feeder line. The parasitic element arrays are arranged so as to form a plurality of pseudo-slot openings that allow a radio wave from the dipole antenna to propagate therethrough as magnetic currents.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: December 2, 2014
    Assignee: Panasonic Corporation
    Inventors: Takeshi Ohno, Sotaro Shinkai
  • Patent number: 8842053
    Abstract: An electrically-shortened Yagi antenna includes a boom, a first electrically-shortened end element mounted on the boom, a second electrically-shortened end element mounted on the boom; and an electrically-shortened driven element mounted on the boom and electrically shortened less than the first and second electrically-shortened end elements.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: September 23, 2014
    Assignee: Fluidmotion, Inc.
    Inventors: Clayton B. Curtiss, Michael E. Mertel
  • Patent number: 8803753
    Abstract: The invention relates to data transmission in radio communication networks, the object of the invention multiband directional antenna comprising a multidimensional array structure and having more than one director working in active or passive mode according to the working frequency.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 12, 2014
    Assignee: Vodafone IP Licensing Limited
    Inventors: Miguel Arranz Arauzo, Javier Lopez Roman, Julio Urbano Ruiz, Clara Serrano Solsona, Mai Tran Le
  • Patent number: 8682244
    Abstract: An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: March 25, 2014
    Assignee: WFS Technologies Ltd.
    Inventors: Mark Rhodes, Derek Wolfe, Brendan Hyland
  • Publication number: 20140035789
    Abstract: A multi-band antenna is provided in the present invention. The multi-band antenna includes a substrate, a first antenna module and a second antenna module. The first antenna module with an Industrial Scientific Medical band is formed on the substrate. The second antenna module with a V band is formed on the first antenna module. A vertical projecting plane of the second antenna module on the substrate is overlapped with the substrate. The second antenna module further includes at least two antenna units. Center lines of the antenna units are coplanar and are parallel each other with a distance or crossed at a point with an included angle. A height of each antenna unit is equal to an odd multiple of one-quarter effective wavelength.
    Type: Application
    Filed: August 29, 2012
    Publication date: February 6, 2014
    Applicant: SJ ANTENNA DESIGN
    Inventors: YA CHUNG YU, Chih Min Lin, Chih Wei Lin
  • Publication number: 20130293434
    Abstract: Some embodiments provide a relatively small antenna apparatus that acts as a passive repeater. The antenna apparatus can be designed to facilitate radio frequency (RF) signal gain for a collection or range of frequencies. In some embodiments, the antenna apparatus is placed near a device with a wireless receiver and/or transmitter, where the antenna apparatus causes increased RF signal intensity at the device by coupling RF signals from a proximate area of higher RF signal intensity into the area around the device. Accordingly, in some instances, an embodiment of the antenna apparatus can be used to increase the RF signal intensity in a null spot or dead spot by coupling RF signal energy from an area proximate to the null spot that has higher RF signal intensity.
    Type: Application
    Filed: April 3, 2013
    Publication date: November 7, 2013
    Inventor: Michael Clyde Walker
  • Publication number: 20130214984
    Abstract: An electromagnetic bandgap structure comprising a progressive cascade of a plurality of patterns of cells. The cells of each pattern are dimensioned so that each pattern has a reflection phase response centered at a different, but closely-spaced, frequency compared with the reflection phase response of an adjacently positioned pattern, so that the combined reflection phase response of the plurality of patterns provides a continuous wideband operational range.
    Type: Application
    Filed: December 13, 2012
    Publication date: August 22, 2013
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventor: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
  • Patent number: 8515344
    Abstract: An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: August 20, 2013
    Assignee: WFS Technologies Ltd.
    Inventors: Mark Rhodes, Derek Wolfe, Brendan Hyland
  • Patent number: 8502746
    Abstract: A planar directional antenna including a substrate, a metal layer, a master antenna, and an auxiliary antenna is provided. The substrate has a first surface and a second surface. The metal layer is disposed on the second surface of the substrate, and an upper edge of the metal layer forms a concave parabolic curve. The master antenna is disposed on the substrate and located within a predetermined range of the focus of the concave parabolic curve. The auxiliary antenna is disposed on the substrate and opposite to the master antenna so that the planar directional antenna generates a beam toward a radiation direction.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: August 6, 2013
    Assignee: HTC Corporation
    Inventor: Huan-Chu Huang
  • Publication number: 20130162491
    Abstract: A dual radiation patterns antenna is provided in the present invention. The dual radiation patterns antenna includes a substrate, a first antenna unit and a second antenna unit. The substrate has a first surface and a second surface opposite to the first surface. The first antenna is formed on the first surface of the substrate and used to radiate a first radiation pattern. The second antenna is formed on the second surface of the substrate and used to radiate a second radiation pattern. A first vertical projecting plane of the first antenna unit on the second surface is overlapped with the second antenna unit completely or partially. A second vertical projecting plane of the second antenna unit on the first surface is overlapped with the first antenna unit completely or partially. The first radiation pattern and the second radiation pattern are perpendicular each other.
    Type: Application
    Filed: July 24, 2012
    Publication date: June 27, 2013
    Applicant: SJ ANTENNA DESIGN
    Inventor: Ya Chung Yu
  • Patent number: 8456283
    Abstract: A device for operating an RFID writing/reading device with transmitted signal suppression includes the RFID writing/reading device and a reflection modulator. The RFID writing/reading device includes a transmitter, a receiver with a signal processor, a directional coupler with a first, a second, a third and a fourth port, and an antenna. The reflection modulator is connected to the fourth port of the directional coupler. The reflection modulator includes a first setting element and a second setting element. The reflection modulator is configured to reflect a copy of a transmitted signal from the RFID writing/reading device, the amplitude and phase of which copy have been weighted, to the directional coupler. The directional coupler is configured to add the weighted copy of the transmitted signal to a received signal from the antenna in the directional coupler.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: June 4, 2013
    Assignee: Intermec IP Corp.
    Inventors: Thomas Martin Brauner, Roland Küng
  • Publication number: 20130120209
    Abstract: Systems and methods which utilize a current null cut reflector dipole antenna configuration are shown. According to embodiments, a plurality of current null points are identified with respect to an antenna element reflector configuration whereby a reflector is provided which terminates at the identified current null points. Accordingly, a noncontiguous reflector is provided in current null cut reflector dipole antenna elements. The discontinuity in the noncontiguous reflector is utilized for disposing signal feed paths providing a feed network to the dipole antenna element of the current null cut reflector dipole antenna. Accordingly, current null cut reflector dipole antennas of embodiments may be provided in configurations which are relatively simple and inexpensive to manufacture, such as two-sided printed circuit board configurations.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 16, 2013
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Angus C.K. Mak, Corbett R. Rowell
  • Patent number: 8358973
    Abstract: An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: January 22, 2013
    Assignee: WFS Technologies Ltd.
    Inventors: Mark Rhodes, Derek Wolfe, Brendan Hyland
  • Patent number: 8237618
    Abstract: A slot-fed Yagi aerial includes: a cable, a reflector, an active dipole and directors, wherein, the reflector, the active dipole, etc. are provided on a support tube; the feeding section of the Yagi aerial is of a shielded slot structure in which the distance between the ends of the slot is approximately one half of the wavelength of the electromagnetic signal desired to be received; the two pieces of thin metal rods composing the half wavelength dipole are located at two external sides of the slot; the outer conductor of the cable is connected to one side of the slot, and the inner conductor of the cable is connected to the other side of the slot or the inner conductor of the cable isolated by a dielectric layer is wound around at the other side of the slot, so as to realize a direct connection feed or a coupling feed.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: August 7, 2012
    Assignee: Shenzhen Grentech Co., Ltd.
    Inventor: Jinbo Wu
  • Patent number: 8223085
    Abstract: A sensor element for opening of doors and gates, with the aim being to allow production of a detection field for identification of people and/or static objects by means of an antenna element, the antenna element is intended to have a flat antenna unit, with a pin-like antenna projecting at least approximately vertically from the flat antenna unit.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: July 17, 2012
    Assignee: Bircher Reglomat AG
    Inventors: Klaus Mezger, Léon Audergon
  • Publication number: 20120127052
    Abstract: The invention relates to data transmission in radio communication networks, the object of the invention multiband directional antenna comprising a multidimensional array structure and having more than one director working in active or passive mode according to the working frequency.
    Type: Application
    Filed: October 25, 2011
    Publication date: May 24, 2012
    Inventors: Miguel ARRANZ ARAUZO, Javier Lopez Roman, Julio Urbano Ruiz, Clara Serrano Solsona, Mai Tran Le
  • Patent number: 8164536
    Abstract: A dual polarized variable beam tilt antenna having a superior Sector Power Ratio (SPR). The antenna may have slant 45 degree dipole radiating elements including directors, and may be disposed on a plurality of tilted element trays to orient an antenna boresight downtilt. The directors may be disposed above or about the respective dipole radiating elements. The antenna has a beam front-to-side ratio exceeding 20 dB, a horizontal beam front-to-back ratio exceeding 40 dB, a high-roll off, and is operable over an expanded frequency range.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: April 24, 2012
    Inventors: Kevin Le, Louis J. Meyer, Pete Bisiules
  • Patent number: 8144070
    Abstract: A portable Yagi antenna kit for being frequency/wavelength adjustable by virtue of being knockdownable, wherein the Yagi antenna is for mounting to a mast. The antenna includes a boom, a reflector element, a driven element, and a director element. The reflector element, the driven element, and the director element each extend outwardly from the boom, respectively. The boom, the reflector element, the driven element, and the director element are each knockdownable so as to be portable and form the kit, and as such, are length adjustable, and as such, are frequency/wavelength adjustable.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: March 27, 2012
    Assignee: Superantenna Corporation
    Inventor: Vernon L. Wright
  • Publication number: 20120026704
    Abstract: A wireless networking adapter integrated in an impedance-controlled manner with at least one directional antenna and, optionally, an omni-directional antenna to achieve maximum signal strength and integrity for a given antenna size for maximum distance performance.
    Type: Application
    Filed: July 27, 2011
    Publication date: February 2, 2012
    Applicant: hField Technologies, Inc.
    Inventor: Thomas J. DiClemente
  • Publication number: 20120019422
    Abstract: 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.
    Type: Application
    Filed: June 1, 2011
    Publication date: January 26, 2012
    Applicant: Syntonics, LLc
    Inventors: Steven E. Gemeny, Eugene Yi-chien Lee, Gary W. Bruce
  • Patent number: 8045919
    Abstract: An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: October 25, 2011
    Assignee: WFS Technologies, Ltd.
    Inventors: Mark Rhodes, Derek Wolfe, Brendan Hyland
  • Publication number: 20110163931
    Abstract: A slot-fed Yagi aerial includes: a cable, a reflector, an active dipole and directors, wherein, the reflector, the active dipole, etc. are provided on a support tube; the feeding section of the Yagi aerial is of a shielded slot structure in which the distance between the ends of the slot is approximately one half of the wavelength of the electromagnetic signal desired to be received; the two pieces of thin metal rods composing the half wavelength dipole are located at two external sides of the slot; the outer conductor of the cable is connected to one side of the slot, and the inner conductor of the cable is connected to the other side of the slot or the inner conductor of the cable isolated by a dielectric layer is wound around at the other side of the slot, so as to realize a direct connection feed or a coupling feed.
    Type: Application
    Filed: August 12, 2008
    Publication date: July 7, 2011
    Inventor: Jinbo Wu
  • Publication number: 20100277388
    Abstract: A portable Yagi antenna kit for being frequency/wavelength adjustable by virtue of being knockdownable, wherein the Yagi antenna is for mounting to a mast. The antenna includes a boom, a reflector element, a driven element, and a director element. The reflector element, the driven element, and the director element each extend outwardly from the boom, respectively. The boom, the reflector element, the driven element, and the director element are each knockdownable so as to be portable and form the kit, and as such, are length adjustable, and as such, are frequency/wavelength adjustable.
    Type: Application
    Filed: July 24, 2009
    Publication date: November 4, 2010
    Inventor: Vernon L. Wright
  • Patent number: 7812770
    Abstract: A mobile wireless communications device may include a portable housing having a surface, a printed circuit board (PCB) carried by the portable housing, and wireless transceiver circuitry carried by the PCB. The device may further include an antenna connected to the transceiver, and at least one electrically floating, electrically conductive, antenna beam shaping element secured to the surface of the portable housing for directing a beam pattern of the antenna.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: October 12, 2010
    Assignee: Research In Motion Limited
    Inventors: Yihong Qi, Ying Tong Man, Krystyna Bandurska
  • Patent number: 7649504
    Abstract: In one embodiment, a backfire antenna comprises a cup-shaped member defining an outer aperture and an interior cavity, a splash-plate disposed within a plane, and a dipole assembly comprising first and second arms. The first and second arms are both oriented non-parallel to the splash-plate towards the plane.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: January 19, 2010
    Assignee: The Boeing Company
    Inventor: John E. Baldauf
  • Patent number: 7642965
    Abstract: An antenna device, includes a plurality of substrate type antennas arranged in a direction, each of the substrate type antennas includes a dielectric substrate, an electric supply line that includes a microstrip line and is formed on the dielectric substrate, and antenna elements each of which includes microstrip lines and formed on the dielectric substrate, and a reflector plate located along the direction that the substrate type antennas are arranged. The substrate type antennas each have different angles of inclination relative to the reflector plate.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: January 5, 2010
    Assignee: Hitachi Cable, Ltd.
    Inventor: Xin Zhang
  • Patent number: 7639198
    Abstract: An antenna comprising a reflective surface; and an array of dipole antenna elements disposed adjacent to the reflective surface. Each antenna element has a pair of arms which together define a dipole axis, and the dipole axis is tilted at an acute angle with respect to the reflective surface. The pair of arms may be dipole arms, or may be Yagi director arms. In some embodiments the dipole axis is tilted at an acute angle with respect to a feed axis. In some embodiments the antenna element comprises a feed portion defining a feed axis; and the feed portion has a mounting portion which is tilted at an acute angle with respect to the feed axis.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: December 29, 2009
    Assignee: Andrew LLC
    Inventors: Igor E. Timofeev, Eddie Ray Bradley, Ky Q. Chau, Martin L. Zimmerman
  • Patent number: 7633454
    Abstract: An antenna array system includes a launcher comprising an antenna configured to establish and steer a wavefront, and an array of Yagi-Uda director trains coupled to the launcher and located in the path of the wavefront. The array of Yagi-Uda director trains is configured to influence a beamwidth of the launcher. A method for beam steering includes launching a wavefront generated by an antenna through an array of director elements, and steering the wavefront. The array of director elements focuses the wavefront and influences gain of the antenna over plural steering angles.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: December 15, 2009
    Assignee: Lockheed Martin Corporation
    Inventor: Michael E. Weinstein
  • Patent number: 7629938
    Abstract: An open Yaggi antenna array is disclosed wherein the reflector element and parasitic director elements of the antenna array are opened in line with the feed point of the driven element so that the reflector and director elements do not cause a shunting effect on the driven element of the antenna.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: December 8, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Michael J. Josypenko
  • Publication number: 20090256769
    Abstract: The present invention related an asymmetrical yagi representation of dipole UWB antenna herein, said antenna located on a substrate and able to be interconnected to a wireless communication apparatus. The antenna comprising: a first radiation arm, said radiation arm comprising a first feed point, a first branch, a second branch, and a first tail. The second radiation arm comprising a second feed point, a third branch, a fourth branch and a second tail. Said first tail and said second tail point are located at the farthest spot from the first radiation arm and the second radiation arm respectively.
    Type: Application
    Filed: April 9, 2008
    Publication date: October 15, 2009
    Applicant: KINSUN INDUSTRIES INC.
    Inventors: CHING-NENG KAN, HSUAN-YI KUO
  • Patent number: 7580001
    Abstract: A device 20 includes a substrate 22 having an integrated circuit (IC) die 24 coupled thereto. A bond wire 28 interconnects a die bond pad 32 on the IC die 24 with an insulated bond pad 36. Another bond wire 38 interconnects a die bond pad 42 on the IC die 24 with another insulated bond pad 46. The bond wires 28 and 38 serve as radiating elements of a dipole antenna structure 64. A reflector 72 and director 74 can be located on the substrate 22 and/or the IC die 24 to reflect and/or direct a radiation pattern 66 emitted by or received by the antenna structure 64. A trace 82 can be interconnected between the insulated bond pads 36, 46 to form a folded dipole antenna structure 84.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: August 25, 2009
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Chi Taou Tsai, Ricardo A. Uscola
  • Publication number: 20090085821
    Abstract: The present invention relates to an antenna system designed to be used in a wireless link, having polarization directions, respectively for reception and emission identical to the polarization directions, respectively for emission and reception, presented by a similar system placed in a geometric configuration of use that is different from that of the said first system. The invention enables identical devices to be implemented in separate items of equipment and in distinct positions while enabling the antenna pair to function correctly.
    Type: Application
    Filed: May 3, 2006
    Publication date: April 2, 2009
    Inventors: Franck Thudor, Francoise Le Bolzer, Corinne Nicolas
  • Publication number: 20090046794
    Abstract: A multi-input multi-output communication device can communicate with other communication device. The multi-input multi-output communication device includes: an antenna device configured to perform communication using a plurality of polarized waves; a transmitting circuit configured to divide data to be transmitted into a plurality of data streams, and transmit the data by multiplexing signals corresponding to the data streams on the plurality of polarized waves from the antenna device; and a receiving circuit configured to receive data by separating signals multiplexed at the other communication device from a signal received by the antenna device via the plurality of polarized waves.
    Type: Application
    Filed: July 24, 2008
    Publication date: February 19, 2009
    Applicant: Buffalo Inc.
    Inventors: Jun MARUYAMA, Nagahiro MATSUURA
  • Patent number: 7423606
    Abstract: A portable/handheld device is provided having a processing module configured to selectively operate a reading mode selected from a far-field mode and a near-field mode, and a directional antenna array coupled to the processing module. The directional antenna array includes a first antenna element configured to radiate electromagnetic (EM) radiation in a far-field, and a second antenna element coupled to the first antenna element. The second antenna element is configured to radiate EM radiation in a near-field. The second antenna element includes an antenna transducer configured to selectively cancel far-field EM radiation from the first antenna element. A method of reading inductively coupled radio frequency identification (RFID) tags is also provided having the steps of scanning at least one frequency band to detect a RFID tag, and selectively radiating one of a near-field electromagnetic (EM) field and a far-field EM field based on the detected RFID tag.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: September 9, 2008
    Assignee: Symbol Technologies, Inc.
    Inventors: Richard T. Knadle, Jr., Hal Charych, Mark William Duron, Raj Bridgelall
  • Publication number: 20080150824
    Abstract: An antenna array system includes a launcher comprising an antenna configured to establish and steer a wavefront, and an array of Yagi-Uda director trains coupled to the launcher and located in the path of the wavefront. The array of Yagi-Uda director trains is configured to influence a beamwidth of the launcher. A method for beam steering includes launching a wavefront generated by an antenna through an array of director elements, and steering the wavefront. The array of director elements focuses the wavefront and influences gain of the antenna over plural steering angles.
    Type: Application
    Filed: December 20, 2006
    Publication date: June 26, 2008
    Applicant: Lockheed Martin Corporation
    Inventor: Michael E. Weinstein
  • Patent number: 7388555
    Abstract: An adjustable-frequency two-element bowtie antenna includes a support member on which first and second non-conductive hollow element support arms are mounted. Each support arm includes first and second opposing segments. The first and second segments of each element support arm include a first section extending outwardly from the support member, a curved transition section, and a second section extending in a direction towards and joining the second section of the other element support arm. The spacing between the first sections of each segment of each element support arm increase as a function of the distance from the support member. A length-adjustable conductive member is disposed in each element support arm. Length adjusters are coupled to the conductive members to configure the lengths of antenna elements. A connector may be provided to couple a transmission-line to a pair of the conductive members comprising a driven element.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: June 17, 2008
    Inventor: Michael E. Mertel
  • Patent number: 7365702
    Abstract: An antenna device includes a first elliptic reflective surface, a first antenna and a second antenna. The first elliptic reflective surface has a first focus and a second focus. The first antenna is disposed on the first focus, and the second antenna is disposed on the second focus. The first antenna transmits a first signal and a second signal, and the second antenna receives the first signal and the second signal. The first signal is transmitted directly to the second antenna from the first antenna. The second signal is reflected by the first elliptic reflective surface and transmitted to the second antenna.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: April 29, 2008
    Assignee: Accton Technology Corporation
    Inventor: I-Ru Liu
  • Patent number: 7352336
    Abstract: A directive monopole antenna element with good RF performance (e.g., directivity and cross-polarization) and a low assembly cost is provided. The directive monopole antenna includes a dielectric support structure and one or more conductive directors coupled to the support structure. Each of the conductive directors is disposed parallel to every other conductive director and in a first plane of the support structure. The directive monopole antenna further includes a conductor coupled to an end of the support structure. The conductor has a feed probe section disposed in the first plane perpendicular to the one or more conductive directors and extending beyond the end of the support structure. The conductor further has a bent section disposed in the first plane parallel to the one or more conductive directors. The feed probe section and the bent section are electrically coupled. The directive monopole antenna element may be fed by a waveguide or a coaxial feed line.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: April 1, 2008
    Assignee: Lockheed Martin Corporation
    Inventors: Erik Lier, Bernard F Lindinger
  • Patent number: 7286097
    Abstract: An antenna minimizes radiation from the outer conductor (44) of a coaxial cable (40) that is coupled to the antenna by providing a balancing tab (90) that lies near the connection (72) of the cable outer conductor (44) to the antenna. One antenna includes a Yagi structure (12) constructed of a plate of metal that forms a long boom (20) and a plurality of directors (28) extending laterally across the boom, with an electrical coupling loop mounted at a rear region of the Yagi structure. The coupling loop includes a folded dipole in the form of a metal coupling plate that forms a loop (54) with a gap (70), the loop having a laterally elongated front loop end (60). The Yagi structure is formed with a balancing tab (90) that lies forward of the loop, that has a lateral length (D) less than half that of one of the directors, and that extends from only one side (22) of the boom which is the side to which the outer coax conductor (44) is connected to the loop.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: October 23, 2007
    Assignee: Wilson Electronics, Inc.
    Inventors: Alan Van Buren, Richard M. Kline
  • Patent number: 7202835
    Abstract: A directive antenna operable in multiple frequency bands includes an active antenna element and at least one passive antenna element parasitically coupled to the active antenna element. The passive antenna element(s) have length and spacing substantially optimized to operate at (i) a fundamental frequency associated with the active antenna element and (ii) a higher resonant frequency related to the fundamental frequency. Spatial-harmonic current-distributions of the passive antenna elements are used to create the multiple frequency bands of operation. The directive antenna also includes devices operatively coupled to the passive antenna element(s) to steer an antenna beam formed by applying a signal at the fundamental resonant frequency, higher resonant frequency, or both to the active antenna element to operate in the multiple frequency bands.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: April 10, 2007
    Assignee: IPR Licensing, Inc.
    Inventors: Bing Chiang, Michael J. Lynch, Griffin K. Gothard
  • Patent number: 7095383
    Abstract: Field Configurable Radiation Antenna Device for fixed dipole antenna comprising of a hollow tube and at least one pair of directional vanes is described. The beam direction of the antenna can be changed by operationally connecting multiples pairs of directional vanes to the hollow tube and by rotating the directional vanes relatively outer peripheral surface of the hollow tube. Such adjustments allow the user to tune the antenna to meet new or unforeseen coverage issues.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: August 22, 2006
    Assignee: Intermec IP Corp.
    Inventors: Robert Zigler, For Sander Lam
  • Patent number: 6975278
    Abstract: Disclosed are systems and methods which provide multi-band antenna elements using multiple radiating branches interconnected with a feed plate, thereby providing a multi-band antenna element having a single feed. Additionally or alternatively, a wide band antenna configuration is provided utilizing multiple radiating branches of a multi-band antenna element of the present invention. Embodiments utilize one or more reflectors, such as to provide directivity and/or radiation pattern shaping, including utilizing one or more radiating branches of a multi-band antenna element as a reflector for another one or more radiating branches of the multi-band antenna.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: December 13, 2005
    Assignee: Hong Kong Applied Science and Technology Research Institute, Co., Ltd.
    Inventors: Peter Chun Teck Song, Ross David Murch
  • Patent number: 6856299
    Abstract: A frequency modulation antenna includes: a hermetically sealed driver assembly, which includes a driver tube, a gamma tube, a spacer stamping between the driver tube and the gamma tube, and an impedance matching block assembly between the driver tube and the gamma tube. The antenna eliminates conventional sources of signal degradation and interference due to its bi-directional nature, the hermetic sealing of the driver assembly, the coupling methods that prevent corrosion, and the dielectric coating. The antenna is further mounted to provide strength against the elements, facilitated by the precise mating of the driver assembly, the impedance matching block assembly, and a cleat to the mounting block, and the engagement of the teeth of the cleat and the serrations of a U-bolt to a pole. The antenna is significantly smaller than many conventional antennae while still being able to receive signals of low power without undue degradation or interference.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: February 15, 2005
    Inventor: Jack Seibert
  • Patent number: 6677914
    Abstract: An antenna system with at least one tunable dipole element with a length adjustable conductive member disposed therein that enables the antenna to be used over a wide range of frequencies. The element is made of two longitudinally aligned, hollow support arms made of non-conductive material. Disposed longitudinally inside each element is a length adjustable conductive member electrically connected at one end. In the preferred embodiment, each conductive member is stored on a spool that is selectively rotated to precisely extend the conductive member into the support arm. The support arms, which may be fixed or adjustable in length, are affixed at one end to a rigid housing. During use, the conductive members are adjusted in length to tune the element to a desired frequency.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: January 13, 2004
    Inventor: Michael E. Mertel
  • Patent number: 6606074
    Abstract: A hand-held dual frequency satellite communication antenna of circular polarization-capable characteristics is disclosed. The antenna system is based on Yagi/Udi spaced elements, including tuned trap-enabled dual frequency elements, disposed in orthogonal planes of a hand-receivable antenna boom element. The antenna system is fabricated from low cost readily obtainable materials and in a manner permitting easy disassembly and packaging for carriage to an isolated location of usage. Configuration of the disclosed antenna system for transmission and reception in two different popular amateur radio satellite communication bands is included. Antenna system field pattern characteristics and actual element lengths are included in the disclosure.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: August 12, 2003
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Richard A. Allnutt
  • Patent number: RE42087
    Abstract: An antenna system with at least one tunable dipole element with a length adjustable conductive member disposed therein that enables the antenna to be used over a wide range of frequencies. The element is made of two longitudinally aligned, hollow support arms made of non-conductive material. Disposed longitudinally inside each element is a length adjustable conductive member electrically connected at one end. In the preferred embodiment, each conductive member is stored on a spool that is selectively rotated to precisely extend the conductive member into the support arm. The support arms, which may be fixed or adjustable in length, are affixed at one end to a rigid housing. During use, the conductive members are adjusted in length to tune the element to a desired frequency.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: February 1, 2011
    Assignee: Fluid Motion, Inc.
    Inventor: Michael E. Mertel