Patents Examined by Trinh Dinh
  • Antenna device and portable radio communication device comprising such an antenna device
    Patent number: 8144071
    Abstract: A quad-band antenna device (10) for a portable radio communication device comprises two radiating elements (12, 14) of different lengths and two common conductors (18, 20) of different lengths. One of the common conductors can be selectively connected in and out with respect to radio frequency signals in order to adjust the total electrical length of the antenna device, thereby making it operable in four different frequency bands.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: March 27, 2012
    Inventor: Anders Thornell-Pers
  • Feedhorn assembly and method of fabrication thereof
    Patent number: 8134515
    Abstract: An array of feedhorns feeds detected radiation through waveguides to diode-based mixers to produce modulated intermediate frequency (“IF”) signals. The mixers and waveguides are accommodated on a substrate surface and multiple substrates can be layered up to support a two-dimensional array of waveguide openings in a face of a waveguide/mixer block. A feedhorn block is brought into register with this face so that each waveguide opening connects with a feedhorn. An end portion of each feedhorn is drilled into the opening of a respective waveguide. The main feedhorn block and the waveguide/mixer block are then assembled into registration. This method of construction avoids transverse interfaces in the walls of the feedhorns or waveguides just at the point where the transition is made from one to another.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: March 13, 2012
    Assignee: ThruVision Systems Limited
    Inventor: Christopher Mark Mann
  • Coherent near-field array
    Patent number: 8134510
    Abstract: A coherent near-field array. The array consists of a number of high-gain elements, each of which directs its beam at the desired target area (either mechanically or electronically). Each element is coherently fed, so that the phase relationships between different feeds are constant or slowly varying. The elements in the array may be spaced many wavelengths apart. The array relies on interference to generate a number of power density peaks within the target area.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: March 13, 2012
    Assignee: Raytheon Company
    Inventors: David D. Crouch, Michael J. Schweiger
  • Apparatus for raising and lowering an antena
    Patent number: 8130168
    Abstract: The mast (11) of an antenna is pivotally carried by a post (12) by a hinge assembly (13). A pedestal (33) is carried by the post (12) and is adapted to carry a winch (40) having a line (46) with a hook (47) at the end thereof. A hook mount (50) is carried by the mast (11) and is adapted to receive the hook (47) of the winch (40). A locking bracket (56) is carried by the mast (11) and is connected to the pedestal (33) when the mast (11) is positioned adjacent to the post (12). An insulator bar (29) is positioned between the mast (11) and the hinge assembly (13) and the locking bracket (56).
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: March 6, 2012
    Assignee: PDS Electronics, Inc.
    Inventors: Paul D. Sergi, Edward L. Merical, Christopher R. Cummings
  • Wideband strip fed patch antenna
    Patent number: 8130149
    Abstract: A microstrip patch antenna comprises a patch antenna element comprising a first conductive layer; dual probe feeds separate from each other and spaced from and field coupled to the patch antenna element for transmitting or receiving RF signals, each of the dual probe feeds having a conductor segment and a deltoid shaped conductive strip orthogonal to the conductor segment; the deltoid shaped conductive strips being coplanar; and a first dielectric material layer separating the first conductive layer and the coplanar deltoid shaped conductive strips.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: March 6, 2012
    Assignee: Lockheed Martin Corporation
    Inventor: Haris Tabakovic
  • RF antenna system having low-power requirements for RFID tag communication
    Patent number: 8120540
    Abstract: An RF antenna system for RFID tag communication includes a terminal and wire antennas extending therefrom. Each wire antenna has a first end electrically coupled to the terminal and a second end that is unencumbered. At least a portion of each wire antenna to include the second end thereof is flexible in at least one direction so that an RFID tag of an RFID-tagged object contacts at least one of the wire antennas.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: February 21, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Lincoln Armstrong
  • Transmission line slot antenna
    Patent number: 8120543
    Abstract: A transmission line slot antenna is described. Although more generally applicable, the antenna is particularly adapted to conformal applications. The antenna has a ground plate with a conductive top surface having a slot with a feed whose ground reference terminal is connected to one side of the slot and whose signal terminal is connected to the other side of the slot. A conductive cylindrical screen, which can be of an arbitrary cross section and non-uniform in the longitudinal direction, is formed of one or more sections attached along the bottom surface of the ground plate, with each of the sections having a first and second edge conductively connected to the top surface of the ground plate along opposite sides of the slot. The antenna is tuned to support the fundamental mode (H00) of a slotted cylinder transmission line formed by the screen sections and a part of the ground plate with the slot.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: February 21, 2012
    Inventors: Oleksandr Sulima, Volodimir Veremey
  • Programmable antenna with programmable impedance matching and methods for use therewith
    Patent number: 8106848
    Abstract: A programmable antenna includes a fixed antenna element and a programmable antenna element that is tunable in response to at least one antenna control signal, wherein tuning the programmable antenna element changes an impedance of the antenna. A programmable impedance matching network is tunable in response in response to at least one matching network control signal to adjust for the changes in the impedance of the antenna.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: January 31, 2012
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Electronically scanned array having a transmission line distributed oscillator and switch-mode amplifier
    Patent number: 8102329
    Abstract: In one embodiment, an integrated circuit antenna array is provided that includes: a low-voltage substrate supporting an RF transmission network, and a high-voltage substrate bonded to the low-voltage substrate, the high-voltage substrate supporting a plurality of antennas coupled to the RF transmission network through switch-mode power amplifiers integrated into a surface of the high voltage substrate.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: January 24, 2012
    Inventor: Farrokh Mohamadi
  • Electronically scanned antenna
    Patent number: 8098207
    Abstract: An aperture of an antenna for a radar system comprises a first waveguide comprising a first protrusion and a second protrusion, each protrusion extending longitudinally along one side of the first waveguide. The aperture further comprises a second waveguide comprising a third protrusion and a fourth protrusion, each protrusion extending longitudinally along one side of the second waveguide. The first and third protrusions and second and fourth protrusions adjoin to form a radio frequency choke at least partially suppressing cross polarization of radio frequencies between the first and second waveguides.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: January 17, 2012
    Assignee: Rockwell Collins, Inc.
    Inventors: Brian J. Herting, James B. West, Wajih A. ElSallal, John C. Mather, Bret W. Spars, Daniel L. Woodell
  • Multiband antenna
    Patent number: 8094076
    Abstract: A multiband antenna includes a feed portion, a radiating portion, and a ground via. The feed portion includes a first feed section and a second feed section paralleled to each other. The radiating portion includes a first radiator, a second radiator and a third radiator. The first radiator is L shaped with a free end. The second radiator is L shaped with a free end. The free ends of the second radiator and the first radiator extend toward to each other and partially overlap to define a slot therebetween. The third radiator includes a trapezoid section and a connecting section. The short portion includes a first short section and a second short section. The first short section connects the first radiator to the ground via, and the second short section connects the second radiator and the third radiator to the ground via.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: January 10, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chong Zhang, Cho-Ju Chung
  • Electronically steerable antenna
    Patent number: 8094086
    Abstract: An electronically steerable antenna includes at least one driven element, at least one controllable counterpoise element, and a support structure on which the driven element and the controllable counterpoise element are disposed. The controllable counterpoise element has at least one geometric characteristic which can be varied. A radiating angle of the driven element is selectively controlled, at least in part, by modifying the geometric characteristic of the at least one controllable counterpoise element. The counterpoise element may include multiple conductive segments, at least a subset of which may be adapted to be individually electrically connected together so as to modify the radiating angle of the driven, element.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: January 10, 2012
    Assignee: Agere Systems Inc.
    Inventors: Roger A. Fratti, Anthony J. Grewe
  • Antenna guard
    Patent number: 8085207
    Abstract: A guard (120) for an antenna (602) includes a base (206) defined between a front edge (209), a rear edge (211), and two lateral edges (213, 215). A front generally triangular surface (208) extends from the front edge (209) to a narrowed upper edge, a rear generally triangular surface (210) extends from the rear edge (211) to a narrowed upper edge, and two lateral generally triangular surfaces (212, 214), each having a narrowed upper edge, extend from their respective lateral edge (213, 215). The narrowed upper edges form an apex (204), which forms an opening (202). The surfaces (208, 210, 212, 214) at least partially define an internal cavity (304) that encloses a portion (604) of the antenna (602). The front surface (208) is at a first angle (?) relative to a mounting surface (117) and the rear surface (210) is at a second, larger angle (?) relative to the mounting surface (117).
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: December 27, 2011
    Assignee: Caterpillar Forest Products Inc.
    Inventors: Jason Lee Miller, Kevin M. Sergeant
  • Single drive variable azimuth and beam tilt antenna for wireless network
    Patent number: 8085211
    Abstract: An antenna array employing a combined azimuth and elevation beam angle adjustment electromechanical system is disclosed. The system employs a dual purpose remotely controllable actuator. The actuator is used to adjust azimuth angle of the antenna array and radiation beam tilt of the same. An antenna array employing a combined azimuth, beamwidth and elevation beam angle adjustment electromechanical system is also disclosed.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: December 27, 2011
    Assignee: Powerwave Technologies, Inc.
    Inventors: Ching-Shun Yang, Kommana Tejomurthi, Alexander Rabinovich
  • Method and apparatus for wideband planar arrays implemented with a polyomino subarray architecture
    Patent number: 8077109
    Abstract: Methods for producing wide-band planar array antenna designs and antenna corresponding thereto.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: December 13, 2011
    Assignees: University of Massachusetts, The United States of America as represented by the Secretary of the Air Force
    Inventors: Thomas M. Roberts, Scott G. Santarelli, Robert J. Mailloux
  • Passive anti-jamming antenna system
    Patent number: 8077104
    Abstract: System and method for improving the interference resistance of an radio frequency (RF) antenna system through passive prescreening of the RF energy incident upon the antenna. The invention physically partitions the RF environment into two or more sectors with respect to the direction of arrival of incident energy. The power level of the RF frequencies of interest incident upon each sector is determined such that whenever the power level exceeds a given threshold, the received signal from energy incident on that sector is modified.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: December 13, 2011
    Assignee: Science Applications International Corporation
    Inventors: Cordell Fox, Kevin Wing, Robert A. Murphy, David C. Priester
  • Multi-modal RF diversity antenna
    Patent number: 8072388
    Abstract: A dual-band diversity antenna includes a ground plane and a main antenna system coupled to the ground plane, the main antenna system being a dipole having a primary dipole axis directed along the longitudinal axis of the wireless communication device, and a diversity antenna system coupled to the ground plane, the diversity antenna system being a monopole having an primary axis directed along the longitudinal axis of the wireless communication device.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: December 6, 2011
    Assignee: Sierra Wireless, Inc.
    Inventors: Paul A. Nysen, Todd Van Cleave, Daniel George Laramie, Geoffrey G. Schulteis, Kevin Wolentarski
  • Mobile wireless communications device including an electrically conductive, electrically floating element and related methods
    Patent number: 8068061
    Abstract: A mobile wireless communications device may include a portable housing having an interior and comprising a removable panel providing access to the interior, a printed circuit board (PCB) carried by the portable housing. The device may further include an antenna connected to the PCB and carried by the bottom portion of the PCB, and at least one electrically floating, electrically conductive, antenna beam shaping element secured to the removable panel.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: November 29, 2011
    Assignee: Research In Motion Limited
    Inventors: Yihong Qi, Ying Tong Man, Krystyna Bandurska
  • Wide band antenna
    Patent number: 8068064
    Abstract: There is provided a low-cost wide band antenna having an ultra-wide band and high performance. The wide band antenna includes an antenna element to form a shape of a ridge waveguide open cross-section structure together with GND (10) when it is spread. The antenna element has a ridge element portion (13) corresponding to the ridge portion of the ridge waveguide and a radiation element portion (14) corresponding to the wall of the ridge waveguide and extending from the ridge element portion (13) for electromagnetic wave radiation. Moreover, the antenna element has an opposing auxiliary element (12) having the same shape and structure as the ridge element portion (13). The radiation element portion (14) has an end arranged on the GND (10). The ridge element portion (13) has a tip end connected to a power supply terminal (100).
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: November 29, 2011
    Assignee: Yokowo, Co., Ltd.
    Inventors: Wasuke Yanagisawa, JunXiang Ge
  • Image display apparatus
    Patent number: 8068070
    Abstract: An image display apparatus includes a display panel having a plurality of electron emission portions that emit electrons, a plurality of light emitting regions positioned corresponding to the plurality of electron emission portions to emit light in response to irradiation of electrons from the electron emission portion thereon, and a shielding member provided between a substrate having the electron emission portions provided thereon and an opposing substrate having the light emitting regions thereon, and a correction circuit that corrects a pixel signal for modulating the electron emission portions. The shielding member shields electrons reflected from peripheral light emitting regions adjacent to a predetermined one of the light emitting regions to the predetermined light emitting region, and irradiates electrons from the shielding member to the predetermined light emitting region.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: November 29, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideaki Yui, Akira Hayama