Traveling Wave Type Patents (Class 343/731)
  • Patent number: 10014946
    Abstract: Aspects of the subject disclosure may include, for example, a node device includes an interface configured to receive first signals. A plurality of coupling devices are configured to launch the first signals on a transmission medium as a plurality of first guided electromagnetic waves at corresponding plurality of non-optical carrier frequencies, wherein the plurality of first guided electromagnetic waves are bound to a physical structure of the transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: July 3, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Irwin Gerszberg, Robert Bennett, Farhad Barzegar, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 9711867
    Abstract: A basic antenna (2), designed to form a radiating element of an array antenna, includes, superimposed, a planar reflector (4), a probe (6), and an assembly (8) of the EBG type by default in the form of a cavity (16). The basic antenna (2) includes a wall enclosure (10) capable of reflecting the electromagnetic waves at the operating frequency or frequencies of the basic antenna (2), the wall enclosure (10) being an extension in a direction orthogonal to the planar reflector (4) and simultaneously surrounding only the probe (6), the cavity (16) and the structure (14). The one- or two-dimensional array antenna includes a plurality of joined basic antennas (2) arranged compactly.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: July 18, 2017
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S), UNIVERSITE DE LIMOGES
    Inventors: Bernard Jecko, Mohammad Hajj, Regis Chantalat, Moustapha Salah Toubet
  • Patent number: 9577341
    Abstract: A radio frequency (RF) communications system includes a local RF communications device and an RF antenna including a conical RF launch structure coupled to the local RF communications device, and an elongate electrical conductor having a proximal end coupled to the conical RF launch structure and a distal end spaced apart from the conical RF launch structure to define an elongate RF coverage pattern. The elongate conductor may be a coaxial cable. At least one remote RF communications device, within the elongate RF coverage pattern, wirelessly communicates with the local RF communications device.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: February 21, 2017
    Assignee: HARRIS CORPORATION
    Inventor: Francis Eugene Parsche
  • Patent number: 9537225
    Abstract: A method for use with a reflectarray antenna for wireless telecommunication is described. The method involves providing a reflectarray antenna, and adjusting a phase of a scattered field of the reflectarray antenna for generating different radiation patterns for angular mode-based multiplexing. The reflectarray antenna includes a ground plane, a dielectric substrate attached on the ground plane; and a first antenna patch formed on one side of the dielectric substrate. Further, the reflectarray antenna includes a second antenna patch formed adjacent to the first antenna patch with a separation area therebetween; and a phase adjustment member disposed in the separation area. The phase of the scattered field of the antenna is adjusted by changing a DC voltage of the phase adjustment member.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: January 3, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Woo Jin Byun, Yong Heui Cho, Min Soo Kang, Kwang Seon Kim, Bong-Su Kim
  • Patent number: 9406421
    Abstract: An electrical system having an underlying structure resembling the double helix most commonly associated with DNA may be used to produce useful electromagnetic fields for various applications.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: August 2, 2016
    Assignee: Medical Energetics Ltd
    Inventor: David G. Schmidt
  • Patent number: 9373885
    Abstract: Indoor/outdoor broadband wireless combined radio/antennas configured to include an integrated adjustable mount allowing mounting to a pole or stand and adjustment of the angle of the device (e.g., the altitude) by a lockable ball joint. The device may include a compact array antenna having a high gain configured to operate in, for example, the 5.15 to 5.85 GHz band and/or the 2.40-2.48 GHz band. The antenna emitters may be arranged in a separate plane from a plane containing the antenna feed connecting the emitting elements and also from a ground plane. The antenna array may be contained within a protective weatherproof housing along with the radio control circuitry. The antenna may be manufactured by a simple stamping/forming process. The apparatuses may be configured for low impedance mismatch and may have a high gain relative to a very small and compact overall shape.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: June 21, 2016
    Assignee: Ubiquiti Networks, Inc.
    Inventors: Gerardo Huerta, Jude Lee, John R. Sanford, Gonzalo P. Jabbaz, Hsin-Ming Chen, Robert Pera
  • Patent number: 9293801
    Abstract: A power combining apparatus includes an output waveguide section having inner and outer coaxial conductors, wherein an outer surface of the inner conductor and an inner surface of the outer conductor each includes a substantially linear taper, a center waveguide section having an input, an output, and a plurality of antenna elements, the output of the center waveguide section being coupled to the output waveguide section, and an output waveguide section coupled to the output of the center waveguide section.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: March 22, 2016
    Assignee: TriQuint CW, Inc.
    Inventors: Patrick Courtney, Scott Behan
  • Publication number: 20150147989
    Abstract: An antenna to transmit a wave signal may include a transmission line to transmit the wave signal, a plurality of first transmitting conductors connected to the transmission line. The first transmitting conductors may be substantially perpendicular to the transmission line and the first transmitting conductors may be substantially the same length.
    Type: Application
    Filed: November 22, 2014
    Publication date: May 28, 2015
    Inventor: Richard Strnad
  • Publication number: 20150130675
    Abstract: A radio frequency (RF) communications system includes a local RF communications device and an RF antenna including a conical RF launch structure coupled to the local RF communications device, and an elongate electrical conductor having a proximal end coupled to the conical RF launch structure and a distal end spaced apart from the conical RF launch structure to define an elongate RF coverage pattern. The elongate conductor may be a coaxial cable. At least one remote RF communications device, within the elongate RF coverage pattern, wirelessly communicates with the local RF communications device.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 14, 2015
    Applicant: Harris Corporation
    Inventor: Francis Eugene PARSCHE
  • Patent number: 9000992
    Abstract: There is provided an antenna device for transmitting a radio wave to a tag capable of receiving the radio wave includes a first layer, a second layer, and a first plate which is disposed on or above the second layer. These are electrically conductive. The second layer is disposed apart from the first layer and includes a plurality of non-electrically conductive portions to generate an electromagnetic wave travelling along a first axis above the second layer. Further, the first plate is disposed on or above the second layer to allow the tag to receive the radio wave transmitted from the antenna.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: April 7, 2015
    Assignee: Fujitsu Limited
    Inventors: Manabu Kai, Teruhisa Ninomiya
  • Patent number: 8947317
    Abstract: A reflective impedance element is connected to a port of a composite right/left-handed transmission line, and operates at a predetermined operating frequency so that an impedance when the reflective impedance element is seen from the port becomes a pure imaginary number jB. A reflective impedance component is connected to a port of the composite right/left-handed transmission line, and operates at the predetermined operating frequency so that an impedance when the reflective impedance element is seen from the port becomes ?jB.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: February 3, 2015
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventors: Tetsuya Ueda, Gouki Haida, Shintaro Yamamoto
  • Publication number: 20150022407
    Abstract: Leaky wave antennas that can be reconfigured in pattern and/or polarization by exploiting the characteristic of metamaterial structures loaded with variable capacitor and inductors employ a Composite Right Left Handed (CRLH) unit cell with two independent DC biases used to actively change the group delay of the transmission line and the polarization of the radiated field while preserving good impedance matching. Different degrees of pattern and polarization reconfigurability are achieved by cascading multiple of these unit cells along a straight line, a circular line or a zigzag line while preserving high gain for all the antenna configurations and good impedance matching.
    Type: Application
    Filed: August 1, 2014
    Publication date: January 22, 2015
    Inventors: Daniele Piazza, Michele D'Amico, Kapil R. Dandekar
  • Patent number: 8922425
    Abstract: A waveguide structure according to one embodiment includes an upper waveguide and a mode conversion portion. The upper waveguide internally transmits a high frequency signal in TE10 mode along a first direction. The mode conversion portion is configured to electromagnetically couple with the upper waveguide. The mode conversion portion converts the high frequency signal propagating through the upper waveguide from TE10 mode to TM11 mode. The mode conversion portion transmits the high frequency signal converted in a second direction perpendicular to the first direction. According to the waveguide structure pursuant to the embodiment, it is possible to attain excellent transmission characteristics of high frequency signals.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: December 30, 2014
    Assignee: Kyocera Corporation
    Inventor: Kazuki Hayata
  • Patent number: 8836594
    Abstract: A leaky wave antenna system is set forth. The antenna comprises: a microstrip fabricated on a top surface of a substrate; a ground plane formed on a bottom surface of the substrate; and a plurality of impedance components, each impedance component having one terminal electrically coupled to a lengthwise edge of the microstrip abutting the top surface of the substrate. A switch is electrically connected between each one of the plurality of impedance components and the ground plane. A control module coupled to the plurality of switches operates to specify a direction of a main beam radiating from the microstrip by selectively connecting one or more of the plurality of impedance components to the ground plane.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: September 16, 2014
    Assignee: Board of Trustees of Michigan State University
    Inventors: Edward J. Rothwell, Raoul Ouedraogo
  • Patent number: 8836595
    Abstract: An antenna device that radiates or receives a radio wave includes: a first wire line; a second wire line that is parallel to the first wire line; a power feeding/receiving point that is provided at proximal portions of the first wire line and second wire line; and a terminal resistance that is provided at distal end portions of the first wire line and second wire line.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: September 16, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masahiro Hanazawa, Nobuhiro Ide
  • Patent number: 8730017
    Abstract: A first antenna section included in an antenna has a first conductor, supplies electric power to a plurality of tags, and transmits electromagnetic waves to and receives electromagnetic waves from the plurality of tags. One end of the first conductor is a feeding point and an other end of the first conductor is an open end. The first conductor is connected to a reader-writer device for communicating with the plurality of tags. The first conductor can output electromagnetic waves. A second antenna section included in the antenna has a second conductor one end of which is a feeding point, an other end of which is an open end, and which is opposite to the first conductor of the first antenna section with the plurality of tags therebetween.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: May 20, 2014
    Assignee: Fujitsu Limited
    Inventors: Manabu Kai, Teruhisa Ninomiya
  • Publication number: 20140078011
    Abstract: A 3D package device of a photonic integrated chip matching circuit, comprising: a first carrier substrate; a first microwave transmission line array formed by evaporation on the top surface of the first carrier substrate to provide bias voltages and high-frequency modulation signals to the photonic integrated chip; a second carrier substrate formed perpendicularly to the first carrier substrate or to have a certain angle with respect to the first carrier substrate, so as to constitute a 3D structure; a second microwave transmission line array formed by evaporation on the bottom surface of the second carrier substrate to match electrodes of the first microwave transmission line array, the second microwave transmission line array being soldered or sintered with the electrodes of the first microwave transmission line array; an electrode array formed by evaporation on a side surface or two opposite side surfaces of the second carrier substrate; and a microwave circuit.
    Type: Application
    Filed: December 13, 2012
    Publication date: March 20, 2014
    Applicant: INSTITUTE OF SEMICONDUCTORS, CHINESE ACADEMY OF SCIENCES
    Inventor: INSTITUTE OF SEMICONDUCTOR, CHINESE ACADEMY OF SCIENCES
  • Patent number: 8665072
    Abstract: A shipping container has passive radio antenna element having internal and external antennas. A connector spanning the wall joins the two antennas. An internal communications device is disposed within the container and an external communications device is disposed external to the container. Another shipping container has a repeater element having internal and external antennas. A repeater unit spans the wall joining the two antennas. A communications device is disposed within the container and another communications device is disposed externally. RF signals are re-radiated by the antennas. Methodology includes inputting PF signals from a communication device disposed at a first location, receiving the signals through an antenna comprised by an antenna element, and re-radiating the signal from a second antenna comprised by the element, where the element spans the wall of a shipping container. The re-radiated signal is received by a second communications device disposed at a second location.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: March 4, 2014
    Assignee: Round Rock Research, LLC
    Inventor: John R. Tuttle
  • Patent number: 8558745
    Abstract: An antenna arrangement for generating and receiving terahertz radiation is described. The arrangement comprises a substrate comprising a photoconductive material and a pair of electrodes provided on the photoconductive material. Each electrode includes a plurality of elongate fingers spaced apart from each other which are arranged in a parallel relation and define finger gaps therebetween. The fingers of one electrode are located within the finger gaps formed between the spaced apart fingers of another electrode so that two neighboring fingers belong to different electrodes. The fingers of each electrode have at least one protrusion extending away from lateral sides of the fingers within the finger gap.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: October 15, 2013
    Assignee: Novatrans Group SA
    Inventors: Laurent Habib, Ron Daisy
  • Patent number: 8471775
    Abstract: The array antenna includes a feed line, and a plurality of radiating element sections arranged at a predetermined arranging interval in a first direction, each of the radiating element sections including at least one radiating element fed a traveling wave through the feed line. The inter-element line length as a length of the feed line between each succeeding two of the radiating element sections is longer than the arranging interval in the first direction.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: June 25, 2013
    Assignee: Denso Corporation
    Inventors: Kento Nakabayashi, Kazuma Natsume, Yuu Watanabe, Takuya Kouya
  • Patent number: 8462062
    Abstract: A storage container assembly includes a container having a metal side wall, and a passive wireless repeater mounted on the side wall. The repeater includes a first antenna on one side of the side wall, a second antenna on an opposite side of the side wall, and an electrical connection between the first antenna and the second antenna. The electrical connection may be in the form of a first connector mounted to the first antenna and a second connector mounted to the second antenna.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: June 11, 2013
    Assignee: Solstice Medical, LLC
    Inventors: Michael D. Westrick, Daniel L. Sands
  • Publication number: 20130127678
    Abstract: Processes and systems for radiating electromagnetic energy from an open-ended coaxial cavity are described herein. An antenna assembly includes an open-ended coaxial radiator. The coaxial assembly includes an inner electrically conducting surface and an outer conductive surface spaced apart from and opposing the inner electrically surface. More than one radially aligned electromagnetic coupling modules are positioned at least partially within the coaxial waveguide along different rotation angles. Each of the different electromagnetic coupling modules samples a local electric field, amplifies the sampled field, and alters a phase of at least one of the amplified fields. The amplified, phase-adjusted coaxial fields are radiated from an open end of the coaxial cavity.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Applicant: Raytheon Company
    Inventor: Charles Chandler
  • Publication number: 20130027259
    Abstract: An object is to suppress radiation of a cross polarized wave by a microstrip antenna to improve cross polarization discrimination of the traveling wave excitation antenna. A microstrip antenna wherein: a feed line 21 through which a traveling wave propagates, and a radiating element 22 that is excited by the traveling wave are formed on a dielectric substrate 1, and wherein: the radiating element 22 has a radiating part 22A for radiating a co-polarization wave, and an open stub 22B that has a stub length 22A substantially equal to ?g/4 and that extends from the radiating part toward a cross polarization direction. Therefore, without changing an element width Lb of the radiating element 22, radiation of a cross polarized wave by the radiating element 22 can be suppressed to improve cross polarization discrimination.
    Type: Application
    Filed: July 27, 2012
    Publication date: January 31, 2013
    Applicants: FUJITSU TEN LIMITED, NIPPON PILLAR PACKING CO., LTD.
    Inventors: Takaaki Fujita, Takeshi Okunaga, Eisuke Hayakawa
  • Publication number: 20130029615
    Abstract: According to one embodiment, an antenna apparatus includes a leaky coaxial cable and a power supply apparatus. The power supply apparatus that provides a voltage for operating a mobile terminal receiving a radio wave radiated from the leaky coaxial cable when a high-frequency signal is provided.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 31, 2013
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Katsumi Gocho, Hiroki Mochizuki
  • Publication number: 20120249385
    Abstract: The invention is a class of planar unidirectional traveling-wave (TW) antenna comprising a planar four-arm TW radiator ensemble, such as a 4-arm spiral, which is fed medially with a twin-lead feed connected with only a pair of opposite arms of the TW radiator, with the other two arms parasitically excited. The use of a mode suppressor enhances the purity of single-mode TW propagation and radiation. The twin-lead feed is connected with the balanced side of a balun, and is impedance matched with the TW radiator on one side and the balun on the other side. This simple feed structure using a single balun is generally smaller and much simpler, and thus much less costly than the conventional feed for a 4-arm spiral, which is a complex one-to-four power divider that contains hybrids, power dividers, couplers, matrices, etc.
    Type: Application
    Filed: February 16, 2012
    Publication date: October 4, 2012
    Applicant: WANG ELECTRO-OPTO CORPORATION
    Inventor: Johnson J.H. Wang
  • Patent number: 8264410
    Abstract: A planar broadband beam-steering phased array antenna with approximately 10:1 bandwidth is comprised of planar broadband traveling wave antenna elements positioned parallel to a conducting ground plane and spaced less than 0.5 wavelength at the highest operating frequency and more than 0.01 wavelengths at the lowest operating frequency. Each planar traveling wave antenna element is a planar frequency-independent antenna or planar self-complementary antenna, and is truncated to fit a unit cell of the phased array. Adjacent antenna elements are arranged to be tightly coupled together or connected with each other and spaced less than 0.5 wavelength apart between their centers throughout its operating frequency range. One or more layers of dielectric or magneto-dielectric substrates/superstrates can be added to enhance specific performances.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: September 11, 2012
    Assignee: Wang Electro-Opto Corporation
    Inventor: Johnson J. H. Wang
  • Publication number: 20120068898
    Abstract: A stacked disk loaded antenna (80) that uses a dual double tuned impedance matching networks to broadband match the radiation resistance to a 50? port. Using two antenna elements (31, 64) in a stacked construction results in the antenna effectively combining the bandwidth ranges of both the antenna elements and removes the requirement for external tuning, which will add weight to an antenna structure. The stacked antenna system can be employed within communication systems operating within the HF and UHF bands.
    Type: Application
    Filed: June 8, 2010
    Publication date: March 22, 2012
    Applicant: THE SECRETARY OF STATE FOR DEFENCE
    Inventors: Nathan Clow, Ivor Leslie Morrow
  • Publication number: 20110248898
    Abstract: A leaky wave antenna system is set forth. The antenna comprises: a microstrip fabricated on a top surface of a substrate; a ground plane formed on a bottom surface of the substrate; and a plurality of impedance components, each impedance component having one terminal electrically coupled to a lengthwise edge of the microstrip abutting the top surface of the substrate. A switch is electrically connected between each one of the plurality of impedance components and the ground plane. A control module coupled to the plurality of switches operates to specify a direction of a main beam radiating from the microstrip by selectively connecting one or more of the plurality of impedance components to the ground plane.
    Type: Application
    Filed: March 8, 2011
    Publication date: October 13, 2011
    Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventors: Edward J. Rothwell, Raoul Ouedraogo
  • Publication number: 20100321261
    Abstract: The invention relates to an antenna for transmitting or receiving electromagnetic waves at a working frequency f?, that comprises a resonator with a filtering (49) coating that covers the major portion of the upper face of a reflector (22) located inside a cavity (36), the coating (40) being capable of removing all the electromagnetic waves having a frequency f? and propagating in a direction parallel to the upper face of the reflector, without removing all the electromagnetic waves having a frequency f? and propagating in a direction perpendicular to the upper face of the reflector.
    Type: Application
    Filed: March 13, 2008
    Publication date: December 23, 2010
    Applicants: CENTRE NATIONAL D'ETUDES SPATIALES, UNIVERSITE DE LIMOGES
    Inventors: Marc Thevenot, Bernard Jecko, Thierry Monediere, Regis Chantalat, Cyrille Menudier, Patrick Dumon
  • Patent number: 7855689
    Abstract: An antenna apparatus has a ground plane and a traveling-wave linear antenna The ground plane has a dielectric layer and metallic plates disposed on the dielectric layer. The plates placed on a front side of the ground plane act as a band gap surface. The dielectric constant and thickness of the dielectric layer, the number of plates and the width of spaces among the plates are adjusted, so that the band gap surface prevents propagation of electromagnetic waves within a specific frequency band. The antenna is disposed over the band gap surface on the front side of the ground plane to be spaced away from the band gap surface. The antenna radiates electromagnetic waves of an operational frequency within the specific frequency band in response to an alternating current of the operational frequency fed to the linear antenna.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: December 21, 2010
    Assignees: Nippon Soken, Inc., Denso Corporation
    Inventors: Shinji Fukui, Mitsuru Fujita
  • Patent number: 7825810
    Abstract: A RFID tag read equipment includes a read device and an antenna system including first to third antennas. The read device outputs the question wave as a high-frequency current, and reads the predetermined data by demodulating the answer wave when the answer wave is inputted therein as a high-frequency current. The first to third antennas output the high-frequency current when they receive the electromagnetic wave, and radiate the electromagnetic wave when the high-frequency current is inputted therein. Here, the first antenna is connected to the read device via a feeder wire, the second antenna being located such that its radiation direction is made parallel and opposite to radiation direction of the first antenna, the third antenna being connected to the second antenna via a feeder wire.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: November 2, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Isao Sakama, Minoru Ashizawa
  • Publication number: 20100207830
    Abstract: The planar antenna apparatus may include a planar, electrically conductive, patch antenna element having a geometric shape defining an outer perimeter, and a pair of spaced apart signal feedpoints along the outer perimeter of the planar, electrically conductive, patch antenna element and separated by a distance of one quarter of the outer perimeter to impart a traveling wave current distribution. The outer perimeter of the planar, electrically conductive, patch antenna element may be equal to about one operating wavelength thereof. The apparatus may provide dual circular or dual linear polarization. The planar patch element may relate to a full wave loop antenna as a compliment.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Applicant: Harris Corporation
    Inventor: Francis Eugene Parsche
  • Publication number: 20100207829
    Abstract: The antenna apparatus may include a planar, electrically conductive, slot antenna element having a geometrically shaped opening therein defining an inner perimeter, and a pair of spaced apart signal feedpoints along the inner perimeter separated by a distance of one quarter of the inner perimeter to impart a traveling wave current distribution. The inner perimeter of the planar, electrically conductive, slot antenna element may be equal to about one operating wavelength thereof. The antenna apparatus may provide at least one of linear, circular, dual linear and dual circular polarizations, and it may provide an in situ or conformal antenna for vehicles or aircraft.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Applicant: Harris Corporation
    Inventor: Francis Eugene Parsche
  • Patent number: 7733280
    Abstract: An antenna system includes plural antennas. Each antenna is different than every other antenna. Each antenna is characterized by a principal plane. A principal plane of a first antenna is oblique to a principal plane of a second antenna. The first antenna includes a first insulating substrate extending in the principal plane of the first antenna. The first antenna further includes a first radiating element and a connected first conductor and includes a second radiating element and a connected second conductor. The first antenna further includes a coupling conductor coupling the second radiating element and the first conductor. The first antenna further includes a first coupler having a first signal conductor and a second signal conductor. The first signal conductor is coupled to the second conductor, and the second signal conductor is coupled to the first radiating element.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: June 8, 2010
    Assignee: Kaonetics Technologies, Inc.
    Inventor: James Cornwell
  • Patent number: 7696884
    Abstract: An RFID system comprises an intermediate device that includes a first and second antenna coils connected together in a close loop format. The coils are formed on a flexible substrate that can be folded around a magnetic flux blocker such that one loop is on side of the blocker and the other loop is on the other side of the blocker. The intermediate device can then improve communication between a reader on one side of the blocker and a tag on the other. The coil on the reader side of the blocker can receive RF signals being generated by the reader and convert them to an electrical signal that can be passed to the coil on the tag side of the blockage. The second coil can then generate an RF signal that can be transmitted to the tag.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: April 13, 2010
    Assignee: Macronix International Co., Ltd.
    Inventors: Huan-Chin Luo, Lu-Shan Chiang, Ying-Che Lo, Chia-Jui Shen, Po-Chih Lai, Kung-Hua Lee
  • Patent number: 7659864
    Abstract: A broadband antenna has a substrate, a coupling conductor, a conductor string, a ground conductor and a ground plane. The coupling conductor has a first coupling member and a second coupling member being separated from each other. The conductor string and the ground conductor are connected to the second coupling member. The conductor string extends along a direction opposite to the second coupling member. The ground conductor is connected to the ground plane. The broadband antenna uses the coupling conductor and the ground conductor to adjust input impedance for impedance match. The conductor string functions as a multi level resonance circuit to increase impedance bandwidth.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: February 9, 2010
    Assignee: Advanced Connectek Inc.
    Inventors: Wen-Shyang Chen, Yao-Yuan Chang, Chih-Ren Hsiao, Tsung-Wen Chiu, Fu-Ren Hsiao
  • Patent number: 7586416
    Abstract: In one embodiment, a repeater relays an RF signal between an RFID (radio frequency identification) transponder having a transponder antenna, and an RFID reader having a reader antenna. The repeater includes a first antenna configured to be coupled with the reader antenna; a second antenna configured to be coupled with the transponder antenna; and a first coaxial cable which is coupled to the first and second antennas.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: September 8, 2009
    Assignee: OMRON Corporation
    Inventors: Tomonori Ariyoshi, Koyo Ozaki
  • Patent number: 7557759
    Abstract: An integrated multi-band antenna has a first radiating conductor, a second radiating conductor spaced from the first radiating conductor, a trap element connected to the first and second radiating conductors, a third radiating conductor with a first feeding point connected to the first radiating conductor, a fourth radiating conductor connected to the second and third radiating conductors, a meandering radiating conductor having two ends which respectively connect a fifth radiating conductor with a second radiating conductor and a sixth radiating conductor parallel to the meandering radiating conductor and a ground portion arranged close to the first radiating conductor and spaced from the fifth radiating conductor. The second, third and fourth radiating conductors resonate at a first frequency bandwidth. The first, second and third radiating conductor and the trap element resonate a second frequency bandwidth.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: July 7, 2009
    Assignee: Cheng Uei Precision Industry Co., Ltd.
    Inventors: Ching-Chi Lin, Hung-Jen Chen, Kai Shih, Yu-Yuan Wu, Jia-Hung Su
  • Patent number: 7532171
    Abstract: A millimeter wave electronically scanned antenna is disclosed in both passive and active implementations. The antenna comprises a plurality of antenna components, wherein an antenna component, includes a coupler; a ground plane; a traveling wave phase shift line electrically connected to the coupler and grounded to the ground plane; and a plurality of fixed phase shifters, each fixed phase shifter electrically connected to the traveling wave phase shift line at a respective point thereon. One such component includes a plurality of radiating elements electromagnetically connected to a respective one of the fixed phase shifters. The antenna further includes a coupling component to which the radiating antenna is coupled to receive control signals and a radio frequency feed.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: May 12, 2009
    Assignee: Lockheed Martin Corporation
    Inventor: Cole A. Chandler
  • Patent number: 7439863
    Abstract: In an RFID system including an RFID tag and an RFID reader for performing wireless communications with the RFID tag, an RFID relay antenna has a first loop antenna for electromagnetic induction coupling with an antenna at the RFID tag, a second loop antenna that is provided apart from the first loop antenna and for electromagnetic induction coupling with an antenna at the RFID reader, and wires for connecting the first loop antenna and the second loop antenna so as to form one closed loop and for conveying an induced current generated at the first and second loop antennas to the second and first loop antennas, respectively.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: October 21, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kenji Suzuki, Tomohiro Ono, Hiroyuki Yamauchi, Toshio Watanabe
  • Patent number: 7394428
    Abstract: A printed antenna includes a smaller antenna member attached onto the circuit board, one or more greater antenna members attached onto the circuit board and electrically coupled to the smaller antenna member with conductive coupling members and coupled in series with each other, a feed-in terminal electrically coupled to the smaller antenna member, and a ground member attached onto the circuit board and spaced away from the feed-in terminal for a spaced distance for increasing the gain value and the frequency bandwidth of the printed antenna. The ground member may include one or more extensions located beside the feed-in terminal and the smaller antenna member.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: July 1, 2008
    Assignee: Joymax Electronics Co., Ltd.
    Inventor: Fu Mao Hsieh
  • Patent number: 7126552
    Abstract: Device for transmission of electromagnetic radiation through a wall. In order to couple transmission-reception means (2, 4) located on each side of the wall (6), this device comprises two antennas (12, 14) placed on each side of this wall and connected to each other through this wall. Electromagnetic protection means (20) are arranged on all or some of the surfaces of the wall facing the antennas and are made of an electrically conducting material. This device is particularly applicable to a transmitter-receiver system for which one of the components is in a slightly conducting container.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: October 24, 2006
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Marcel Locatelli, Thierry Thomas
  • Patent number: 7084822
    Abstract: A system and method is provided for transmitting analog and digital signals using a single traveling wave structure with radiators attached thereto, to form broadside radiation of the digital and analog signals.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: August 1, 2006
    Assignee: SPX Corporation
    Inventors: Henry Downs, Jeffrey Brown, John Schadler
  • Patent number: 6515628
    Abstract: A dual polarization patch antenna comprising a patch, first and second pairs of orthogonally disposed probes feeding said patch, and a first feed network for feeding said first pair of probes from a first feed point. The first feed network comprises a first feed path from said first feed point to a first probe, a second feed path from said first feed point to a second probe, said second feed path being of a different electrical length to said first feed path such as to cause cancellation of signals from said first and second probes at said second pair of probes, and a first frequency dependent element provided in said first feed path for maintaining the desired cancellation over a desired frequency range.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: February 4, 2003
    Assignee: Andrew Corporation
    Inventor: Arthur George Roberts
  • Patent number: 6509873
    Abstract: The present invention is an antenna comprising a microstrip having upper and lower layers for producing leaky wave radiation. Circularly shaped patches are located on the two layers for circularly polarizing the leaky wave radiation. The present invention provides a microstrip antenna that can produce wideband, circularly polarized radiation. The antenna, therefore, is a compact, low cost, rugged, conformal, planar, and circularly polarized microstrip antenna. The antenna combines the advantages of wideband circularly polarized radiation with the advantages of lightweight, low profile, low cost, and planar microstrip antennas.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: January 21, 2003
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Vahakn Nalbandian, Choon S. Lee
  • Publication number: 20010035842
    Abstract: An array antenna capable of use with a single signal feed has a transmission line oriented substantially parallel to a ground plane, which transmission line has a multiplicity of sequential sections with each sequential section having a different spacing from the ground plane than each of its immediately adjacent sequential sections. This stepped or varied impedance transmission line forms an array in which the sections spaced further from the ground plane become active antenna elements. Controlling an electrical spacing between the ground plane and transmission line provides relative phase control between the active elements and thereby phased-array directional control of the antenna.
    Type: Application
    Filed: April 27, 2001
    Publication date: November 1, 2001
    Inventor: John T. Apostolos
  • Patent number: 6094172
    Abstract: A traveling array antenna which operates at microwave/millimeter frequencies is disclosed in which a like number of radiator elements are arranged in two mirror image branches, an RF signal feed is fed through a 180 degree compensating power splitter to each branch of the antenna array, each of the radiator elements includes an impedance matching transformer connected at its input side and in which a radiator terminating patch is connected to the end of each of the two mirror image branches.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: July 25, 2000
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas Koscica, Duc Huynh
  • Patent number: 6087778
    Abstract: A plasma processing device (25) including a vacuum chamber (27) for processing a substrate (29) and a source chamber (26) for generating a plasma is disclosed where the source chamber (26) has a non-cylindrical geometry. Helicon waves of plasma are propagated from the source chamber into the vacuum chamber by a magnetic field having substantially parallel magnetic field lines extending from the source chamber into the vacuum chamber. A RF antenna (31 and 32) of a novel serpentine configuration is used to couple electromagnetic energy into the source chamber to create helicon plasma waves in the source chamber (26). The non-cylindrical geometry of the source chamber allows the processing of large area substrates due to the ability to scale the source chamber to the desired application while maintaining throughput efficiency and the ability to propagate helicon waves along the magnetic field lines present in the source chamber.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: July 11, 2000
    Assignee: Lam Research Corporation
    Inventors: Neil Benjamin, Stefano Mangano, Russell Jewett
  • Patent number: 6016127
    Abstract: A flat strip-like radiator is angled along the width of the strip to form radiating arms of predetermined length and angles to radiate a design radiation patter. The flat strip is secured to a ground plane such that the flat strip is perpendicular to the ground plane.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: January 18, 2000
    Assignee: Howell Laboratories, Inc.
    Inventors: Dean Casciola, Michael J. Figoli
  • Patent number: H2028
    Abstract: A frequency-scan traveling wave antenna receives radio frequency (RF) energy at an input port, passes the energy through a quarter wave transformer to a first radiator element in an array of radiator elements, each pair of radiator elements being connected by a respective delay line. Each radiator element includes an input port of known characteristic impedance connected to an impedance matching section which compensates for that element's radiated power. Each radiator element has an output port with a section of transmission line disposed between a main radiator section of said radiator element and said output port, and impedance matched to the output port. In one embodiment, each delay line includes a plurality of delay line sections, with adjacent delay line sections being mutually perpendicular. In a second embodiment, each delay line includes a plurality of delay line sections disposed in meandering form.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: June 4, 2002
    Assignee: United States of America
    Inventors: Thomas Koscica, Duc Huynh