With Parasitic Element (e.g., Reflector Or Director) Patents (Class 343/815)
  • Patent number: 10720703
    Abstract: Various embodiments presented herein relate to determining mutual coupling between a pair of antennas in an array antenna. Various operations presented herein enable comparison between a magnitude and phase of a signal transmitted from a first feed network (via a first antenna) and a magnitude and phase of a portion of the signal received at a second feed network (via a second antenna). Electrical effects engendered by any of the first feed network, a first switch, a first local circuit, the second feed network, a second switch, and a second local circuit can also be determined and their effects mathematically removed. Based upon the foregoing, a mutual coupling between the pair of antenna is determined.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: July 21, 2020
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Hung Loui, Thomas Edward Christian, Jr.
  • Patent number: 10547104
    Abstract: An antenna includes a conductor portion, a grounding portion and a radiator portion. The grounding portion includes a main section, first and second wings and a line section. The first and second wings extend respectively from opposite ends of the main section toward the conductor portion. The line section includes a base segment extending from the main section between the first and second wings toward the conductor portion, and an extension segment extending from the base segment toward the first wing. The radiator portion includes a feeding point adjacent to the main section, a base line extending from the feeding point toward the conductor portion and an extension section extending from the base line toward the second wing.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: January 28, 2020
    Assignee: Trans Electric Co., Ltd.
    Inventor: Jui-Chin Huang
  • Patent number: 10547110
    Abstract: A multiband antenna, having a reflector, and a first array of first radiating elements having a first operational frequency band, the first radiating elements being a plurality of dipole arms, each dipole arm including a plurality of conductive segments coupled in series by a plurality of inductive elements; and a second array of second radiating elements having a second operational frequency band, wherein the plurality of conductive segments each have a length less than one-half wavelength at the second operational frequency band.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: January 28, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Ozgur Isik, Philip Raymond Gripo, Dushmantha Nuwan Prasanna Thalakotuna, Peter J. Liversidge
  • Patent number: 10498035
    Abstract: A multiband antenna, having a reflector, and a first array of first radiating elements having a first operational frequency band, the first radiating elements being a plurality of dipole arms, each dipole arm including a plurality of conductive segments coupled in series by a plurality of inductive elements; and a second array of second radiating elements having a second operational frequency band, wherein the plurality of conductive segments each have a length less than one-half wavelength at the second operational frequency band.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 3, 2019
    Assignee: CommScope Technologies LLC
    Inventors: Ozgur Isik, Philip Raymond Gripo, Dushmantha Nuwan Prasanna Thalakotuna, Peter J. Liversidge
  • Patent number: 10439296
    Abstract: An antenna device includes a plurality of antenna elements, a metal member integrally including a first wall and a plurality of second walls that are arranged in parallel to each other and perpendicularly extend from one surface of the first wall, and circuit boards that are respectively housed in substrate-housing spaces as gaps between the adjacent second walls and mount feeder circuits for feeding power to the plurality of antenna elements.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 8, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Seiji Kado, Tomoyuki Ogawa, Satoshi Yoshihara
  • Patent number: 10256549
    Abstract: A compact, low profile, Yagi-based MIMO antenna for small form factor devices including mobile phones and other compact wireless devices. The antenna has a dielectric substrate and an electrically conductive ground plane that acts as a reflector. A driven element and director are on the substrate. In one embodiment, the driven element is an arcuate semi-loop connected to meandered legs and the director element is arcuate, both printed on the substrate. In another embodiment, the driven element is a semi-loop and the director is rectangular, both etched from the ground plane. In both embodiments, a transmission line conveys RF power to the antenna to excite the driven element. Two of the antennas can be mounted side-by-side on a substrate to form a dual-antenna system, and two of the antenna systems can be placed in a tablet or the like.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: April 9, 2019
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohammad S Sharawi, Syed S Jehangir
  • Patent number: 9397405
    Abstract: An antenna device includes a ground element configured to be grounded, a first antenna to be connected to a radio communication module, and a second antenna configured to be parasitic on the first antenna, the second antenna receiving no power feed.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: July 19, 2016
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Masahiro Yanagi, Shigemi Kurashima, Hideaki Yoda
  • Patent number: 9035836
    Abstract: In a typical system a combination of filters (BAW, SAW, etc) and an antenna are configured to achieve frequency filtering effect and efficient transmission and reception of communication signals. Wireless communication systems require specific bandwidth and out-of-band rejection; typically this metric is characterized in frequency roll-off in units of dB/MHz. This number is distributed between the antenna and filter, with the antenna contributing little to date to the filtering effect. Loss and cost penalties are incurred when multi-mode systems are designed which require additional rejection from the filter elements. Described here is a method of designing antennas to reduce the amount of rejection and complexity from the filter system. A superposition of a symmetrical frequency response from the antenna structure coupled with a non-symmetrical frequency response from a counterpoise structure generates increased rejection of out-of-band components.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: May 19, 2015
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Sebastian Rowson, Jeffrey Shamblin
  • Patent number: 9035846
    Abstract: A display device includes a display panel and a directional antenna. The directional antenna is disposed behind or under the display panel for radiating or receiving wireless signals. The radiating path of the directional antenna is at a specific angle with respect to a horizontal plane for receiving surrounding wireless signals. Or, the signals radiated from the directional antenna may be reflected or refracted to regions above or in front of the display device by a back-side barrier or penetrate a back-side barrier which does not cause large electromagnetic degradation, thereby receiving wireless signals originated from the front-side or back-side of the display device.
    Type: Grant
    Filed: September 4, 2011
    Date of Patent: May 19, 2015
    Assignee: AmTRAN TECHNOLOGY CO., LTD
    Inventors: Jia-Haur Liang, Wen-Ping Yu
  • Patent number: 9030361
    Abstract: A modal adaptive antenna system that dynamically samples proximity sensors or other sensors to determine the use case for the wireless device and then adjust the antenna radiating mode to optimize communication link performance. The modal adaptive antenna system is capable of modifying the antenna radiation pattern to improve communication link quality along with near-field parameters such as SAR and HAC. An algorithm and look-up table containing pre-measured electrical parameters to include TRP, TIS, and SAR are developed and integrated with hardware which includes an antenna and active components to dynamically modify the radiation pattern of the antenna as well as proximity sensors and or other sensing devices.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: May 12, 2015
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Barry Matsumori, Sebastian Rowson, Jeffrey Shamblin
  • Patent number: 9002262
    Abstract: Methods and systems for extending a bandwidth of a multi-mode wideband antenna of a user device are described. A multi-mode wideband antenna includes a single radio frequency (RF) feed coupled to a first element, and a second element coupled to the first element and a ground plane. The first element is to operate as a feeding structure to a parasitic grounding element that is coupled to the ground plane, but is not conductively connected to the RF feed. The multi-mode wideband antenna is configured to provide multiple resonant modes.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: April 7, 2015
    Assignee: Amazon Technologies, Inc.
    Inventor: Jerry W. Kuo
  • Patent number: 8988289
    Abstract: An antenna system is capable of optimizing communication link quality with one or multiple transceivers while suppressing one or multiple interference sources. The antenna provides a low cost, physically small multi-element antenna system capable of being integrated into mobile devices and designed to form nulls in the radiation pattern to reduce interference from unwanted interferers. The antenna system operates in both line of sight and high multi-path environments by adjusting the radiation pattern and sampling the received signal strength to reduce signal levels from interferers while monitoring and optimizing receive signal strength from desired sources.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: March 24, 2015
    Assignee: Ethertronics, Inc.
    Inventors: Jeffrey Shamblin, Sebastian Rowson, Laurent Desclos
  • Patent number: 8963560
    Abstract: An antenna system for electromagnetic compliance testing within a frequency range includes a driven element mounted on a boom and including opposed first and second length-adjustable conductors. A length-adjustable passive element is mounted on the boom and spaced apart from the driven element and including opposed third and fourth length-adjustable conductors. An RF input connector is coupled between a feed path to a feed end of each length-adjustable conductors in the driven element. The feed path is configured to minimize stray reactances and stub effects within the frequency range.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: February 24, 2015
    Assignee: Steppir Antenna Systems
    Inventors: Michael Edward Mertel, James E. Thomas
  • Patent number: 8928540
    Abstract: An antenna system is provided for use in wireless communication, the antenna system is contained in a modular structure. The antenna system includes a plurality of co-located antennas, including at least one active modal antenna, each of the antennas being adapted for operation at a distinct frequency band. The antenna system further includes an active tuning module for tuning a frequency response of the co-located antennas.
    Type: Grant
    Filed: November 11, 2012
    Date of Patent: January 6, 2015
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Sebastian Rowson, Jeffrey Shamblin, Sahil Bansal
  • Patent number: 8928541
    Abstract: An active antenna system and algorithm is proposed that provides for dynamic tuning and optimization of antenna system parameters for a MIMO system that will provide for greater throughput. As one or multiple antennas are loaded or de-tuned due to environmental changes, corrections to correlation and/or isolation are made by tuning the active antenna. A null-steering technique is implemented to alter the near-field and far-field characteristics to aid in modifying correlation and isolation in the multi-antenna system.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: January 6, 2015
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Barry Matsumori, Sebastian Rowson, Abhishek Singh
  • Patent number: 8912969
    Abstract: The present invention discloses a directional antenna for a multi-in multi-out or antenna beam switchable wireless communication system, including a substrate, at least one directional antenna, formed on the substrate, for generating a radiating pattern of a radiation plane according to a feeding signal, and a reflector, disposed in parallel to the radiation plane of the directional antenna, for reflecting the radiating pattern of the directional antenna, to increase a gain of the directional antenna corresponding to the radiation plane.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: December 16, 2014
    Assignee: Mediatek Inc.
    Inventor: Hsiao-Ting Huang
  • Patent number: 8860622
    Abstract: An antenna for enhancing characteristic of a beam with reducing PIMD is disclosed. The antenna includes a reflection plate, at least one first choke member disposed on one side of the reflection plate, an insulated member disposed between the reflection plate and the first choke member, thereby separating the first choke member from the reflection plate, wherein the insulated member is an insulator, and a connection member configured to connect electrically the first choke member to the reflection plate through the insulated member, wherein the connection member is a conductor.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: October 14, 2014
    Assignee: Ace Antenna Corporation
    Inventors: Phil-Soo Shin, Byung-Il Oh
  • 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: 8798679
    Abstract: A mobile communication base station antenna has a plurality of polarization diversity antenna blocks, each of the polarization diversity antenna blocks including a plurality of polarization diversity antenna elements, each of the polarization diversity antenna elements including antenna elements that are disposed to be orthogonal to each other. The polarization diversity antenna elements of one of the polarization diversity antenna blocks are interposed between the polarization diversity antenna elements of another one of the polarization diversity antenna blocks, and tilt angles in the vertical plane of the respective polarization diversity antenna blocks are different from each other.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: August 5, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Takayuki Shimizu, Shinsuke Murano, Osamu Tasaki
  • Publication number: 20140118191
    Abstract: Controllable directional antenna apparatus and method preferably includes structure and/or steps whereby a Yagi antenna array has a first driven element, a first reflector, and plurality of first directors disposed on a common substrate. The first reflector is bent such that (i) an unbent length thereof is longer than a length of the first driven element, but (ii) a bent length thereof is shorter than the length of the first driven element. A second driven element is also disposed on the common substrate but is angled with respect to the first driven element. A second reflector and a plurality of second directors are also disposed on the common substrate. The second reflector is bent like the first reflector, to reduce the footprint of the array on the substrate. Preferably, the Yagi antenna elements are printed on a printed circuit board.
    Type: Application
    Filed: October 26, 2012
    Publication date: May 1, 2014
    Applicant: Ericsson Canada
    Inventors: Roland Smith, Peter Frank, Jim Wight
  • Patent number: 8648755
    Abstract: An antenna comprising an IMD element and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: February 11, 2014
    Assignee: Ethertronics, Inc.
    Inventors: Sebastian Rowson, Jeffrey Shamblin, Laurent Desclos
  • Patent number: 8633863
    Abstract: One or more input signals are used to generate a Pseudo noise generator and re-inject the signal to obtain a more efficient method of control of a receiver using adaptive antenna array technology. The antenna array automatically adjusts its direction to the optimum using information obtained from the input signal by the receiving antenna elements. The input signals may be stored in memory for retrieval, comparison and then used to optimize reception. The difference between the outputs of the memorized signals and the reference signal is used as an error signal.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: January 21, 2014
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Sebastian Rowson, Jeffrey Shamblin
  • Patent number: 8604988
    Abstract: A multi-function array is described where several communication system functions are realized using the same antenna architecture. An array of antenna elements where each antenna element can generate multiple radiation patterns is described; the multiple radiation patterns from each antenna element provides increased capability and flexibility in generating a phased array, a MIMO antenna system, a receive diversity antenna system, as well as direction finding feature by way of an interferometer function provided by one or multiple elements. The small volume attributes of the antenna elements populating the array lend this technique to mobile wireless devices as well as access points.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: December 10, 2013
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Sebastian Rowson, Jeffrey Shamblin
  • Patent number: 8581789
    Abstract: A self-reconfigurable multimode antenna system where loading conditions of sensors are analyzed and used to generate control signals to dynamically reconfigure an antenna for improved performance. One or multiple sensors can be coupled to the antenna to dynamically change the radiating structure. One or multiple sensors can be coupled to the input or matching section of the antenna to improve or alter the impedance match of the antenna. An algorithm to relate loading effects of sensors to dynamically adjust the antenna is described.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: November 12, 2013
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Jeffrey Shamblin, Barry Matsumori
  • Patent number: 8558748
    Abstract: A printed dual-band Yagi-Uda antenna is disclosed, which includes a substrate, a first driver, a first director, a second driver and a reflector. The first driver is formed on the substrate, and is utilized for generating a radiation pattern of a first frequency band. The first director is formed at a side of the first driver on the substrate, and is utilized for directing the radiation pattern of the first frequency band toward a first direction. The second driver is formed between the first driver and the first director on the substrate, and is utilized for generating a radiation pattern of a second frequency band. The reflector is formed at another side of the first driver on the substrate, and is utilized for reflecting both the radiation patterns of the first frequency band and the second frequency band toward the first direction.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: October 15, 2013
    Assignee: Ralink Technology Corp.
    Inventors: Xin-Chang Chen, Min-Chung Wu
  • Patent number: 8525748
    Abstract: A variable directivity antenna apparatus is configured to include a parasitic element, a plurality of antenna elements each provided to be away from the parasitic element by an electrical length of a quarter-wavelength, and a PIN diode connected to the parasitic element and changing over whether or not to ground the parasitic element. A radiation pattern from the variable directivity antenna apparatus is changed by outputting a control signal for changing over whether or not the parasitic element operates as a parasitic element by selectively turning on or off the PIN diode.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: September 3, 2013
    Assignee: Panasonic Corporation
    Inventors: Wataru Noguchi, Hiroyuki Yurugi, Masahiko Nagoshi, Sotaro Shinkai, Akihiko Shiotsuki
  • Patent number: 8519902
    Abstract: A wireless local area network (“WLAN”) antenna array (“WLANAA”) is disclosed. The WLANAA may include a circular housing having a plurality of radial sectors and a plurality of primary antenna elements. Each individual primary antenna element of the plurality of primary antenna elements may be positioned within an individual radial sector of the plurality of radial sectors.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: August 27, 2013
    Assignee: Xirrus, Inc.
    Inventor: Abraham Hartenstein
  • Patent number: 8487816
    Abstract: A communication network antenna array is described, which includes a first patch antenna element, a second patch antenna element, and a third patch antenna element, wherein the first patch antenna is adapted for transmission and/or reception of electromagnetic radiation polarized in a first direction, wherein the second patch antenna is adapted for transmission and/or reception of electromagnetic radiation polarized in a second direction, wherein the third patch antenna is adapted for transmission and/or reception of electromagnetic radiation polarized in a third direction, wherein the first, the second and the third patch antenna elements are arranged equidistant to a straight axis, and wherein the first direction, the second direction, and the third direction define an acute angle with the straight axis.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: July 16, 2013
    Assignee: Nokia Siemens Networks Oy
    Inventor: Jussi Säily
  • Patent number: 8482473
    Abstract: A planar reconfigurable antenna including a substrate, a metal layer, a master antenna, an auxiliary antenna and a switch set is provided. The substrate has a first surface and a second surface. The metal layer is disposed on the first surface of the substrate and the upper edge of the metal layer is in a convex arc shape. The master antenna is disposed on the substrate and partially overlaps the metal layer on a vertical plane of projection. The auxiliary antenna is disposed on the substrate and is placed opposite to the master antenna. The switch set is also disposed on the substrate and changes a connection relation of a plurality of directional devices in the auxiliary antenna to switch scanning directions of main beams generated from the planar reconfigurable antenna.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: July 9, 2013
    Assignee: HTC Corporation
    Inventor: Huan-Chu Huang
  • Patent number: 8362962
    Abstract: An antenna comprising an IMD element, and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: January 29, 2013
    Assignee: ETHERTRONICS, Inc.
    Inventors: Sebastian Rowson, Laurent Desclos, Jeffrey Shamblin
  • Patent number: 8354972
    Abstract: The invention refers to a dual-polarized radiating element (100) with: a first patch (101) provided for radiating in a first polarization and a second patch (102) provided for radiating in a second polarization which is substantially-orthogonal to the first polarization, wherein the first patch (101) and the second patch (102) overlap. Further the invention relates to a dual-band dual-polarized antenna assembly (500) comprising at least one patch antenna elements and/or one set of patch antenna elements (501,502) and to corresponding antenna arrays.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: January 15, 2013
    Assignee: Fractus, S.A.
    Inventors: Carmen Borja, Anthony Teillet
  • Patent number: 8242968
    Abstract: A mobile television antenna having an antenna element outwardly extending from opposing ends of a housing. An UHF digital booster extends perpendicularly from one side of the housing between the opposing ends carrying the antenna element. At least one UHF parasitic antenna element is connected on a boom which is integrally connected to the mobile television antenna housing. The ultra high frequency parasitic antenna element is held in a plane near the plane in which the antenna element is held by the housing.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: August 14, 2012
    Assignee: Winegard Company
    Inventors: Timothy John Conrad, Gail Edwin McCollum
  • 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: 8207901
    Abstract: An antenna comprises first and second radiating elements for connecting to a first and second potential levels respectively. The first and second potential levels are substantially different for generating an electrostatic field from the first and the second radiating elements. The antenna further comprises first and second field shaping structures for controlling field propagation in a first and second direction respectively. The first and second field shaping structures are interdisplaced for defining a field pathway while the first and second radiating elements are disposed adjacent to the first and second field shaping structures and along the field pathway for directing the electrostatic field in a propagation direction through a liquid medium. More specifically, the propagation direction is defined by the field pathway and substantially perpendicular to at least one of the first and second directions.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: June 26, 2012
    Assignee: Agency for Science, Technology and Research
    Inventor: Jurianto Joe
  • Patent number: 8184062
    Abstract: A wireless local area network (“WLAN”) antenna array (“WLANAA”) is disclosed. The WLANAA may include a circular housing having a plurality of radial sectors and a plurality of primary antenna elements. Each individual primary antenna element of the plurality of primary antenna elements may be positioned within an individual radial sector of the plurality of radial sectors.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: May 22, 2012
    Assignee: Xirrus, Inc.
    Inventor: Abraham Hartenstein
  • 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
  • Patent number: 8026860
    Abstract: The utilization of small antennas for mobile devices and for low frequency (long wavelength) applications is desired. Further, efficient use of transmission power is desirable, especially in mobile applications. For this purpose, a system is provided that includes one or more of: a multiple-resonator transmitter/receiver, a high bandwidth electrically small antenna, a resonator with a variable feed location, a resonator with a variable reactive component load, and a method for estimating a resonator system response to a component configuration and selected excitation.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: September 27, 2011
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Paul E. Mayes, Paul W. Klock, Suhail Barot
  • Patent number: 8018394
    Abstract: An aftermarket UHF parasitic antenna kit and method for a mobile television antenna includes: a base having an engagement surface and an extending boom; rivet holes in the engagement surface that correspond in size and location to a corresponding number of holes in the bottom of the mobile television antenna; push rivets that engage the rivet and bottom holes to hold the base to the bottom of the mobile television antenna; base foot holes in the engagement surface and boom; resilient base feet that engage the base foot holes; and at least one parasitic antenna element connected to the boom.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: September 13, 2011
    Assignee: Winegard Company
    Inventors: Timothy John Conrad, Gail Edwin McCollum
  • Patent number: 7948365
    Abstract: A tire air pressure monitoring system has a plurality of sensor units and a receiver. The pressure sensor units are mounted near corresponding tires to measure tire air pressures and transmit transmission signals indicating the respective measured tire air pressures. The receiver has an antenna element, a variable capacitor and a power supply source. The variable capacitor is coupled to the antenna element. The power supply source supplies electric power to the antenna element. The voltage supplied to the variable capacitor is controlled so that a current flowing in the antenna element is changed and its directivity is changed. Thus, the transmission signals will be received more surely.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: May 24, 2011
    Assignee: Denso Corporation
    Inventor: Takatoshi Sekizawa
  • Publication number: 20110090131
    Abstract: A printed dual-band Yagi-Uda antenna is disclosed, which includes a substrate, a first driver, a first director, a second driver and a reflector. The first driver is formed on the substrate, and is utilized for generating a radiation pattern of a first frequency band. The first director is formed at a side of the first driver on the substrate, and is utilized for directing the radiation pattern of the first frequency band toward a first direction. The second driver is formed between the first driver and the first director on the substrate, and is utilized for generating a radiation pattern of a second frequency band. The reflector is formed at another side of the first driver on the substrate, and is utilized for reflecting both the radiation patterns of the first frequency band and the second frequency band toward the first direction.
    Type: Application
    Filed: September 30, 2010
    Publication date: April 21, 2011
    Inventors: Xin-Chang Chen, Min-Chung Wu
  • Patent number: 7920096
    Abstract: A RFID tag or label comprises a RFID tag module (comprising an electronic identification circuit and a coupling means) and an antenna structure coupled to the coupling means. The RFID tag module is separate from, separable or arranged to be severable from, the antenna structure. The tag module can be placed in or on an object and the antenna structure in or on packaging material for use with the object. A patch antenna type RFID tag antenna structure has a ground plane spaced from the patch antenna so as to increase the range of the tag. The ground plane is not substantially larger than, and electrically insulated from, the patch antenna. The ground plane is flexible, so the RFID tag structure can be worn by a human, and can be incorporated into a piece of clothing. A RFID antenna structure for use with a tag reader is made flat and robust so that it can be mounted on the ground to be walked upon or driven over.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: April 5, 2011
    Assignee: ZIH Corp.
    Inventors: Martin Fogg, Christopher Gordon Gervase Turner
  • Patent number: 7911402
    Abstract: An antenna comprising an IMD element, and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: March 22, 2011
    Assignee: Ethertronics, Inc.
    Inventors: Sebastian Rowson, Laurent Desclos, Jeffrey Shamblin
  • 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: 7808443
    Abstract: The present invention relates to an antenna arrangement connectable to a transceiver for transmitting and receiving RF signals in at least two separate frequency bands. The antenna arrangement has at least two sets of antenna elements arranged on a reflector, and the antenna elements are arranged in an interleaved configuration along a single column. The two separate frequency bands are substantially non-overlapping but relatively close to each other, and the distance between adjacent antenna elements in said column is substantially the same along the column.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: October 5, 2010
    Assignee: Powerwave Technologies Sweden AB
    Inventors: Björn Lindmark, Jesper Uddin
  • Patent number: 7705797
    Abstract: There is provided an antenna arrangement for use in an ultra-wideband network, the antenna arrangement comprising an active element; and a plurality of passive elements arranged around the active element; each passive element being controllable to selectively reflect or transmit radio signals emitted by the active element so as to create a desired beam pattern from the active element.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: April 27, 2010
    Assignee: ITI Scotland Limited
    Inventor: Michael Philippakis
  • Patent number: 7696928
    Abstract: Systems and methods for communicating over multiple frequency bands include a driven antenna element and a parasitic element communicatively coupled to the driven antenna element, the parasitic element including at least a first and a second conductive section. The parasitic element can include two or more conductive sections, and the sections can be coupled using a connector (e.g., switching element or trap). Further, some driven antenna elements may be associated with two or more parasitic elements.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: April 13, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventor: Corbett Rowell
  • 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: 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