Patents Examined by Stephen E. Jones
  • Patent number: 10224625
    Abstract: A communication system is provided, including an antenna, a matching network coupled to the antenna, a controller configured to control the matching network, and a look-up table coupled to the controller. The look-up table includes characterization data according to frequency bands and conditions. The controller is configured to refer to the look-up table to determine optimum impedance for a frequency band selected under a condition detected during a time interval, and adjust the matching network to provide the optimum impedance.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: March 5, 2019
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Alexandre Dupuy, Chun-Su Yoon
  • Patent number: 10211505
    Abstract: Provided is a resonant structure including a microwave cavity and a sideline radio-frequency (RF) power coupler including: an inner conductor; an outer conductor sharing a central axis with the inner conductor, the outer conductor being electrically coupled to an outer wall of the microwave cavity; and an insulation layer between the inner conductor and the outer conductor.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: February 19, 2019
    Assignee: Triad National Security, LLC
    Inventors: John W. Lewellen, IV, Dinh Cong Nguyen, Cynthia Eileen Buechler, Gregory E. Dale, Dale Allen Dalmas
  • Patent number: 10211496
    Abstract: The present invention provides a common-mode signal absorber, which comprises an impedance-matching network and a common-mode signal reflection circuit. A differential-mode signal is inputted into input ends of the impedance-matching network, and outputted from output ends of the common-mode signal reflection circuit. When a common-mode signal is inputted into the common-mode signal absorber, the common-mode signal reflection circuit is for reflecting the common-mode signal within a specific frequency band. Afterward, the reflection of the common-mode signal within the specific frequency band will be absorbed by an impedance element of the impedance-matching network. Thus, the common-mode signal within the specific frequency band may be absorbed by the impedance-matching network so as to avoid to interfere signals transmitted on a communication system.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: February 19, 2019
    Assignee: National Taiwan University
    Inventors: Tzong-Lin Wu, Po-Jui Li, Ying-Cheng Tseng, Chi-Hsuan Cheng
  • Patent number: 10211498
    Abstract: The reconfigurable resonators for chipless RFID applications provide spiral resonators for a multiple resonator passive RFID transponder tag. Each spiral resonator includes a U-shaped frame of conductive material and has a plurality (K?1) of parallel adjusting or shorting elements disposed between the legs of the U-shaped frame. Each resonator has one leg coupled to a transmission line adapted for connection between a receiving antenna and a transmitting antenna (in some embodiments, a single antenna may be used for both receiving and transmitting), and one of the adjusting or shorting elements may be selectively connected to the opposing leg of the frame to configure the resonator to resonate at one of (K?1) different resonant frequencies (K frequencies if none of the elements are connected) by a short metal jumper strip to change the length of the spiral resonator.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: February 19, 2019
    Assignee: King Saud University
    Inventors: Wazie Mohammed Ahmed Abdulkawi, Abdel Fattah Ahmed Sheta
  • Patent number: 10211802
    Abstract: A positioning device for a radio frequency matcher comprises mainly a micro controller, and at least two detecting elements connected to the micro controller. The detecting elements are disposed on electric motors to detect the rotation angles of the electric motors. When the electric motors adjust the positions of the moving pieces of the tuning elements based on the volume of error signals to change the electrical reactance values so that they may approximately meet the requirement of the radio frequency load and that the radio frequency load may achieve a highest possible power, the micro controller may interpret the signals of the rotation angle detecting elements and output the interpreted values for a user to determine whether the moving pieces of the tuning elements are at right positions to approximately meet the requirement of the radio frequency load and maximize the power of the radio frequency load of the radio frequency matcher.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: February 19, 2019
    Assignee: FairTech Corporation
    Inventor: Jui-Pao Pan
  • Patent number: 10205212
    Abstract: Aspects of the subject disclosure may include, generating, by a first hollow waveguide coupled to a first dielectric coupler, a first electromagnetic wave that couples onto a transmission medium, generating, by a second hollow waveguide coupled to a second dielectric coupler, a second electromagnetic wave that couples onto the transmission medium, combining the first electromagnetic wave and the second electromagnetic wave combine to form a combined electromagnetic wave that propagates along the transmission medium without requiring an electrical return path, and adjusting a first phase of the first electromagnetic wave, a second phase of the second electromagnetic wave, or both to adjust a wave mode of the combined electromagnetic wave. Other embodiments are disclosed.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: February 12, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul Shala Henry, Giovanni Vannucci, Thomas M. Willis, III, Shikik Johnson, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel
  • Patent number: 10205433
    Abstract: An elastic wave device includes a substrate including a piezoelectric material layer and an IDT electrode on the piezoelectric material layer. The IDT electrode includes a Pt film, a Ti film on the Pt film, and an Al-based metal film on the Ti film. The Ti film is quasi-single-crystalline.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: February 12, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ryo Nakagawa, Chihiro Konoma, Masashi Tsubokawa
  • Patent number: 10204992
    Abstract: Methods and structures for improving the performance of integrated semiconductor transistors operating at high frequency and/or high power are described. Two capacitors may be connected to an input of a semiconductor transistor and tuned to suppress second-harmonic generation and to transform and match the input impedance of the device. A two-stage tuning procedure is described. The transistor may comprise gallium nitride and may be configured as a power transistor capable of handling up to 1000 W of power. A tuned transistor may operate at frequencies up to 6 GHz with a peak drain efficiency greater than 60%.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: February 12, 2019
    Assignee: MACOM Technology Solutions Holdings, Inc.
    Inventors: Walter H. Nagy, Lyndon Pattison
  • Patent number: 10199710
    Abstract: Electrical devices having variable electrical properties. The variable electrical characteristics or operation of the devices are based on the potential applied to a variable-dielectric constant sector associated with the device. The electronic devices or component may include bends, power splitters, filters, ports, phase shifters, frequency shifters, attenuators, couplers, capacitors, inductors, diplexers, hybrids of beam forming networks.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: February 5, 2019
    Assignee: WAFER LLC
    Inventor: Dedi David Haziza
  • Patent number: 10200216
    Abstract: A variable ISI transmission channel apparatus inserted in a high-speed transmission channel for the high-speed serial data communication simulates a “live” ISI environment to which the high-speed transmission channel in operation is exposed, in a situation such as a bit error test by means of continuously adjusting an amount of inter-symbol interference (ISI) in the high-speed transmission channel. By allowing an undersurface of a transmission loss generating member (6) (16) (26) such as a dielectric, a magnetic body, and an electric conductor to face, and slide on, a top surface of a conductor strip (2) exposed on a top surface of a plate-shaped dielectric substrate (1), a facing area is continuously increased/decreased. A dielectric loss, a magnetic loss, or a resistance loss increased/decreased in the transmission loss generating member is reflected on a high-frequency signal on the conductor strip (2).
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: February 5, 2019
    Assignee: ARTEK KABUSHIKI KAISHA
    Inventor: Kiyoshi Sone
  • Patent number: 10201084
    Abstract: A printed circuit board includes vias of first and second differential pairs, and vias of third and fourth differential pairs. The vias of the first and second differential pairs are arranged in a first via pattern based on a first crosstalk signature of a first connector to be coupled to the vias of the first and second differential pairs. The vias of the third and fourth differential pairs are arranged in a second via pattern based on a second crosstalk signature of a second connector to be coupled to the vias of the third and fourth differential pairs.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: February 5, 2019
    Assignee: Dell Products, LP
    Inventors: V. Mallikarjun Goud, Bhyrav M. Mutnury
  • Patent number: 10193205
    Abstract: Embodiments of the present disclosure provide a dielectric resonator, a dielectric filter using the dielectric resonator, a transceiver, and a base station, and solve a problem that a loss indicator of an existing dielectric filter cannot meet a filtering requirement of a base station. The dielectric resonator includes a body made of a solid-state dielectric material, where an indentation is disposed on a surface of the body, and the surface of the body and a surface of the indentation are covered with a conducting layer; the dielectric filter includes at least two of the foregoing dielectric resonators. Another type of dielectric filter includes a body made of a solid-state dielectric material, where at least two indentations are disposed on a surface of the body, a hole and/or a groove is disposed between adjacent indentations on the body, and the surface of the body is covered with a conducting layer.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: January 29, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bengui Yuan, Qiang Wang
  • Patent number: 10193202
    Abstract: A switch comprises a first strip conductor and a second strip conductor, arranged orthogonally in a first plane. Moreover, the switch comprises a first switching conductor, having an orthogonally angled shape relative to the first plane. The switch comprises a switching actuator, which is mechanically connected to the first switching conductor and adapted to move vertically relative to the first plane to a first position and to a second position. The switching actuator is configured, so that in the first position, the first strip conductor is in contact with the first switching conductor and the second strip conductor is in contact with the first switching conductor, and so that in the second position, the first strip conductor and the second strip conductor are not in contact with the first switching conductor.
    Type: Grant
    Filed: January 8, 2017
    Date of Patent: January 29, 2019
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Michael Sterns, Markus Leipold, Sebastian Sedlmeier, Markus Freudenreich, Matthias Freudenreich, Karl Stockbauer, Andreas Raith, Alois Wittenzellner
  • Patent number: 10193522
    Abstract: The present application provides a single port wide band impedance matching circuit and method for providing antenna matching. The single port wide band impedance matching circuit includes a single signal port adapted for receiving a wide band signal. The single port wide band impedance matching circuit further includes an impedance matching circuit including a narrow band harmonic bypass. Still further, the single port wide band impedance matching circuit includes an antenna port coupled to the single signal port via the impedance matching circuit.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: January 29, 2019
    Assignee: Motorola Mobility LLC
    Inventors: Gregory R Black, Brian H Bremer
  • Patent number: 10187031
    Abstract: A tunable matching network is disclosed. In a particular example, the matching network includes at least one first inductor in a signal path of the matching network. The matching network includes at least one second inductor outside of the signal path. The matching network includes one or more switches coupled to the at least one second inductor. The one or more switches are configured to selectively enable mutual coupling of the at least one first inductor and the at least one second inductor.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: January 22, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Yunfei Ma, Chengjie Zuo, David Francis Berdy, Daeik Daniel Kim, Changhan Hobie Yun, Je-Hsiung Jeffrey Lan, Mario Francisco Velez, Niranjan Sunil Mudakatte, Robert Paul Mikulka, Jonghae Kim
  • Patent number: 10187036
    Abstract: A piezoelectric thin film resonator includes: a substrate; a piezoelectric film located on the substrate, the piezoelectric film including an aluminum nitride film containing a II-group or XII-group element and a IV-group or V-group element, a concentration of the IV-group or V-group element being higher than a concentration of the II-group or XII-group element in a middle region in a thickness direction, the concentration of the II-group or XII-group element being higher than the concentration of the IV-group or V-group element in at least one of end regions in the thickness direction; and a lower electrode and an upper electrode facing each other across the piezoelectric film.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: January 22, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Tsuyoshi Yokoyama, Tokihiro Nishihara
  • Patent number: 10187033
    Abstract: An apparatus for tuning a plurality of antennas is provided. The apparatus includes a plurality of antenna ports connected to the plurality of antennas; a plurality of user ports; first adjustable impedance elements, each being connected to one of the antenna ports and ground; second adjustable impedance elements, each being connected to one of the user ports and another one of the user ports; and a plurality of connecting elements, each being connected to one of the antenna ports and one of the user ports, wherein the first and second adjustable impedance elements are configured to be adjustable so to tune the plurality of antennas.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: January 22, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Frederic Broyde, Evelyne Clavelier
  • Patent number: 10177428
    Abstract: A compact remotely adjustable harmonic microwave attenuator and linear phase shifter (HAPC) is made using two mobile signal couplers (wave-probes) inserted back-to-back in a slabline which is terminated with 50 Ohms. The coupled ports of the wave-probes are connected with the input ports of a power combiner using flexible RF cables and the output port of the combiner is connected to the output port of the unit. The new structure allows reducing the required linear length of the slabline by half. The wave-probes are attached to the vertical axes of mobile carriages, which are movable to variable distances from the input port of the HAPC, corresponding to the adjustable transmission phases, whereas the depth, at which the wave-probes are inserted into the slabline, determines the coupling factors and thus the value of the attenuations.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: January 8, 2019
    Inventor: Christos Tsironis
  • Patent number: 10177740
    Abstract: A ladder filter includes a piezoelectric substrate, an insulating film on the piezoelectric substrate, first and second electrodes provided on the piezoelectric substrate and including a pair of busbars and plurality of electrode fingers, a first line electrode at least a portion of which is defined by the busbar at one side of the first electrode, a second line electrode at least a portion of which is defined by the busbar at one side of the second electrode, and a third line electrode laminated on the second line electrode. The first line electrode and the second line electrode are electrically connected to different electric potentials. The first line electrode is separated from the second line electrode by a predetermined distance. At least a portion of the third line electrode is overlapped with at least a portion of the first line electrode with the insulating film interposed therebetween in a laminating direction.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: January 8, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Akira Michigami, Koichiro Kawasaki, Takuma Kuzushita
  • Patent number: 10177738
    Abstract: An elastic wave device includes a longitudinally-coupled resonator surface acoustic wave filter including first to third IDTs and a parallel trap including a surface acoustic wave resonator. The longitudinally-coupled resonator surface acoustic wave filter is asymmetric with respect to a central axis of the second IDT, the central axis extending in a direction perpendicular or substantially perpendicular to the elastic-wave propagation direction on the piezoelectric substrate. When the duty ratio of an IDT of the surface acoustic wave resonator is denoted by D0 and the duty ratios of the first to third IDTs are respectively denoted by D1 to D3, the duty ratio D0 is between the highest of the duty ratios D1 to D3 and the lowest of the duty ratios D1 to D3.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: January 8, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Koji Miyamoto