With Variable Reactance For Tuning Antenna Patents (Class 343/745)
  • Patent number: 11356074
    Abstract: An impedance matching device comprises a variable capacitor including multiple capacitance elements and connected in parallel having capacitors and each having one end connected in series to a high-frequency power source and semiconductor switches and connected to the respective capacitors, and a control unit. The control unit derives a reflection coefficient based on the obtained information concerning an impedance viewed from the high-frequency power source toward the load side, updates the states of the respective semiconductor switches and included in the multiple capacitance elements and with a first cycle in the case where the reflection coefficient is equal to or more than a predetermined value, and updates the states of the respective semiconductor switches and included in the plurality of capacitance elements and with a second cycle longer than the first cycle in the case where the reflection coefficient is less than the predetermined value.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: June 7, 2022
    Assignee: DAIHEN Corporation
    Inventor: Tatsuya Morii
  • Patent number: 11269058
    Abstract: Examples disclosed herein relate to an autoencoder assisted radar for target identification. The radar includes an Intelligent Metamaterial (“iMTM”) antenna module to radiate a transmission signal with an iMTM antenna structure and generate radar data capturing a surrounding environment, a data pre-processing module having an autoencoder to encode the radar data into an information-dense representation, and an iMTM perception module to detect and identify a target in the surrounding environment based on the information-dense representation and to control the iMTM antenna module. An autoencoder for assisting a radar system and a method for identifying a target with an autoencoder assisted radar in a surrounding environment are also disclosed herein.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: March 8, 2022
    Assignee: Metawave Corporation
    Inventor: Matthew Paul Harrison
  • Patent number: 11245206
    Abstract: A multi-mode antenna system include at least a first modal antenna and a second modal antenna. The first modal antenna is disposed on a ground plane of a circuit board and configurable in a plurality of different modes. The first modal antenna can include a driven element, at least one parasitic element and an active element configured to adjust a reactance of the at least one parasitic element. The multi-mode antenna system further includes a second modal antenna disposed on the ground plane and configurable in a plurality of different modes. The second modal antenna can include a driven element, at least one parasitic element, and an active element configured to adjust a reactance of the at least one parasitic element. The parasitic element of the second modal antenna is positioned such that adjusting the reactance of the parasitic element affects the radiation pattern associated with the first modal antenna.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: February 8, 2022
    Assignee: AVX Antenna, Inc.
    Inventor: Abhishek Singh
  • Patent number: 11239867
    Abstract: An electronic device is provided that includes a first antenna element that includes a first portion of a housing, and a second antenna element that include a second portion of the housing that is different from the first portion of the housing. The electronic device also includes a memory that stores feed conditions, each for applying a current to one of the first antenna element and the second antenna element. A tuner of the electronic device is controlled such that a first current flows to one of the first antenna element and the second antenna element, based on a first feed condition of the stored feed conditions, and a processor of the electronic device transmits or receives a signal in a specified frequency band based on an electrical path formed through the tuner.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: February 1, 2022
    Inventors: Jeongwan Park, Seho Kim, Min Sakong, Moonsoo Son, Dongryul Shin, Sooyoung Jang, Yoonjae Lee
  • Patent number: 11211698
    Abstract: An apparatus comprises a radio frequency (RF) antenna circuit; an antenna aperture tuning circuit; an antenna impedance measurement circuit; and a processor circuit electrically coupled to the tunable antenna aperture circuit and the impedance measurement circuit. The processor circuit is configured to: set the antenna aperture tuning circuit to an antenna aperture tuning state according to one or more parameters of an RF communication network; initiate an antenna impedance measurement; and change the antenna aperture tuning state to an antenna aperture tuning state indicated by the antenna impedance.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: December 28, 2021
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ping Shi, Yonghua Wei
  • Patent number: 11158957
    Abstract: An example device includes a substrate and first and second antennas disposed on the substrate. The first antenna includes a first feed arm to connect to a circuit and a pair of extended arms extending in opposite directions from the first feed arm. The first antenna is co-located with a secondary antenna area. The secondary antenna area is bounded by the first feed arm and by a first extended arm of the pair of extended arms. The secondary antenna area is further to be bounded by a display and by an outer edge of the substrate. The second antenna is disposed within the secondary antenna area and includes a second feed arm to connect to the circuit. The second antenna further includes a coupled arm distant from the second feed arm, the coupled arm positioned between the second feed arm and the first feed arm of the first antenna.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: October 26, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chris Kruger, Sung Oh
  • Patent number: 11158938
    Abstract: Reconfigurable antenna systems integrated with a metal case are provided herein. In certain embodiments, user equipment (UE) for a cellular network includes a metal case and an antenna system for transmitting and/or receiving wireless signals. The antenna system includes an antenna element and a tuning conductor that is spaced apart from the antenna element and operable to load the antenna element. At least one of the antenna element or the tuning conductor is formed in the metal case. For example, a plasma process can be used to create transparent electromagnetic windows at a given frequency while shielding underlying components from spurious signals at other frequencies. Such plasma shielding processes can be used to turn conductive regions of the metal case into non-conductive metal oxide, thereby providing a mechanism for electrical isolation between various regions of the metal case.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: October 26, 2021
    Assignee: Skyworks Solutions, Inc.
    Inventors: René Rodríguez, Stephen Joseph Kovacic
  • Patent number: 11121460
    Abstract: An antenna assembly is provided for an electronic device. The electronic device has a housing, which includes a first portion and a second portion, the first portion is electrically conductive, and the second portion is non-conductive. The antenna assembly includes an antenna cavity, at least two antennas located in the antenna cavity, and at least one isolation structure. The antennas are used for radiating energy, the isolation structure is disposed between the two antennas and connected to the two antennas, and the isolation structure isolates induced currents of the two antennas to reduce interference at a same frequency or from adjacent frequency channels between the two antennas.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: September 14, 2021
    Assignee: LENOVO (BEIJING) CO., LTD.
    Inventors: Dafei Mo, Xiaoren Cheng, Xiaozhun Shen
  • Patent number: 11121458
    Abstract: An antenna structure includes a ground element, a feeding radiation element, a first radiation element, and a second radiation element. The feeding radiation element is coupled to a signal source. The first radiation element is coupled to the ground element. The first radiation element is adjacent to the feeding radiation element. The feeding radiation element is coupled through the second radiation element to the ground element. A first loop structure is formed by the feeding radiation element, the first radiation element, and the ground element. A second loop structure is formed by the feeding radiation element, the second radiation element, and the ground element. The second loop structure includes neither any branching portion nor any protruding portion.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: September 14, 2021
    Assignee: WISTRON NEWEB CORP.
    Inventor: Yun-Tsan Lee
  • Patent number: 11081905
    Abstract: A power charging system is provided. The power charging system may have an information processing apparatus having a first communication unit and a power receiving unit, and an external apparatus having a second communication unit and a power transmission unit. The second communication unit may be configured to wirelessly communicate with the first communication unit using a first carrier wave having a first frequency and the power transmission unit may be configured to wirelessly transmit power to the power receiving unit using a second carrier wave having a second frequency, the second frequency being different from the first frequency.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: August 3, 2021
    Assignee: SONY CORPORATION
    Inventor: Takahide Kadoyama
  • Patent number: 11063619
    Abstract: A communication device, method, and computer program product provide an antenna subsystem including a first antenna positioned proximate to a second antenna. A radio frequency (RF) frontend includes a transmitter, a receiver, and an antenna tuning module coupled to the antenna(s). A controller is communicatively coupled to the RF frontend and a memory containing a proximal antenna association tuning (PAAT) application. The controller executes the PAAT application to enable the communication device to: (i) transmit a reference signal by the transmitter using the first antenna of the more than one antenna; (ii) measure an impedance value of the first antenna based on the transmission of the reference signal; (iii) identify a second antenna of the more than one antenna that is proximate to the first antenna; and (iv) tune, via the antenna tuning module, the first and the second antenna based on the impedance value of the first antenna.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: July 13, 2021
    Assignee: Motorola Mobility LLC
    Inventors: Armin Klomsdorf, Farhad Farzami, John P. Vitale
  • Patent number: 11009769
    Abstract: Provided are an optical modulation device and an apparatus including the same. The optical modulation device may include a plurality of reflectors located on a driving circuit substrate, a plurality of nano-antennas located on the plurality of reflectors, and an active layer located between the plurality of reflectors and the plurality of nano-antennas and patterned to have a plurality of openings. The optical modulation device may further include a plurality of first connection members configured to electrically connect the driving circuit substrate to the plurality of reflectors and a plurality of second connection members configured to electrically connect the driving circuit substrate to the plurality of nano-antennas. The plurality of second connection members may be connected to the plurality of nano-antennas through the plurality of openings.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: May 18, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Junghyun Park, Byounglyong Choi
  • Patent number: 10942243
    Abstract: Methods directed to finding algorithms designed to estimate the angle of arrival of signals incoming to a communication device by using a modal antenna having multiple radiation patterns are provided. In particular, a method can include obtaining a gain of the modal antenna at each of a plurality of angles. The method can include obtaining a gain variation at each angle. The method can include obtaining a signal strength variation at each angle. The method can include determining a difference between the gain variation and the signal strength variation at each angle. The method can include determining a difference value based at least in part on the difference between the gain variation and signal strength variation.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: March 9, 2021
    Assignee: Ethertronics, Inc.
    Inventors: Olivier Pajona, Michael Roe, Mohd Faizal Mohd Zaini, Sebastian Rowson, Laurent Desclos
  • Patent number: 10910723
    Abstract: A planar antenna for digital television, wherein the planar antenna for digital television comprises a substrate, and a low-frequency radiation line and a high-frequency radiation line arranged on the substrate, the length of the low-frequency radiation lines being one quarter of a wavelength corresponding to the VHF frequency band, and the length of the high-frequency radiation lines being one quarter of a wavelength corresponding to the UHF frequency band.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: February 2, 2021
    Assignee: SHENZHEN TUKO TECHNOLOGY CO, LTD.
    Inventor: Guodong Zhao
  • Patent number: 10847870
    Abstract: A dielectric substrate for a configurable antenna has an upper surface and an opposing lower surface. An upper conductor patch is disposed on the upper surface of the substrate and a lower conductor patch is disposed on the lower surface of the substrate. A sensing antenna is formed in the upper conductor patch. An upper set of slot antennas is formed in the upper conductor patch and a lower set of slot antennas is formed in the lower conductor patch. Each of the slot antennas is loaded with a variable reactance component.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: November 24, 2020
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mohammad S. Sharawi, Rifaqat Hussain
  • Patent number: 10833413
    Abstract: A communication device comprises a plurality of antennas, a sensing unit, a plurality of radio frequency circuits, and a sensing module. The sensing unit is electrically connected to the ground through at least one grounding capacitor, and the sensing unit is further configured to isolate and be coupled to each antenna. Each the radio frequency circuit is electrically connected to the corresponding each antenna. The sensing module is electrically connected to the sensing unit through an inductor, wherein the sensing module is used to sense the distance between the sensing unit and an external object by the sensing unit, and the sensing module generates a distance signal according to the distance.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: November 10, 2020
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Yupang Chou, Chuohsun Sun
  • Patent number: 10797387
    Abstract: An apparatus comprises a radio frequency (RF) antenna circuit; an antenna aperture tuning circuit; an antenna impedance measurement circuit; and a processor circuit electrically coupled to the tunable antenna aperture circuit and the impedance measurement circuit. The processor circuit is configured to: set the antenna aperture tuning circuit to an antenna aperture tuning state according to one or more parameters of an RF communication network; initiate an antenna impedance measurement; and change the antenna aperture tuning state to an antenna aperture tuning state indicated by the antenna impedance.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: October 6, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ping Shi, Yonghua Wei
  • Patent number: 10763576
    Abstract: An apparatus comprises a radio frequency (RF) antenna circuit; an antenna aperture tuning circuit; an antenna impedance measurement circuit; and a processor circuit electrically coupled to the tunable antenna aperture circuit and the impedance measurement circuit. The processor circuit is configured to: set the antenna aperture tuning circuit to an antenna aperture tuning state according to one or more parameters of an RF communication network; initiate an antenna impedance measurement; and change the antenna aperture tuning state to an antenna aperture tuning state indicated by the antenna impedance.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: September 1, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ping Shi, Yonghua Wei
  • Patent number: 10673140
    Abstract: An electronically steerable antenna with dual polarization is provided, as well as a method for steering such an antenna. An example antenna may include a driven patch element having dual polarity for radiating or receiving a first beam with a first polarization and radiating or receiving a second beam with a second polarization. The antenna includes a parasitic patch element separated from the driven patch element and in a parasitic coupling arrangement to the driven patch element, as well as first and second tuning elements linked to the parasitic patch element to control first and second terminating impedances of the parasitic patch element, respectively. The first terminating impedance at least partly determines a direction of the first beam, and the second terminating impedance at least partly determines a direction of the second beam.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: June 2, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Halim Boutayeb, Paul Robert Watson, Weishan Lu, Tao Wu
  • Patent number: 10637138
    Abstract: An apparatus comprises a radio frequency (RF) antenna circuit; an antenna aperture tuning circuit; an antenna impedance measurement circuit; and a processor circuit electrically coupled to the tunable antenna aperture circuit and the impedance measurement circuit. The processor circuit is configured to: set the antenna aperture tuning circuit to an antenna aperture tuning state according to one or more parameters of an RF communication network; initiate an antenna impedance measurement; and change the antenna aperture tuning state to an antenna aperture tuning state indicated by the antenna impedance.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: April 28, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ping Shi, Yonghua Wei
  • Patent number: 10594038
    Abstract: Cage antennas and related components are described. Such cage antennas include a shortened antennal element, such as a monopole (e.g., of approximately ?-wave height of a desired operational wavelength), which can be placed on a shortened ground plane (e.g., roughly quarter-wave size). A cage-like ensemble (e.g., a cage) can then be placed on top of but not touching the antenna element. The cage structure can have a fractal-based, folded, and/or pleated structure, among others. This cage structure can be produced either through a variety of means including but not limited to 3-D printing with either conductive materials or inductively coded materials.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: March 17, 2020
    Assignee: Fractal Antenna Systems, Inc.
    Inventors: Nathan Cohen, Daniel Earle, Justin Mitchell
  • Patent number: 10554230
    Abstract: The present application discloses a signal transmission method, includes: obtaining, by the detection device, port information and switch information of the at least one antenna line device, and port information and switch information of the antenna; sequentially controlling, by the detection device based on the switch information, at least one switch of the at least one antenna line device to perform state switching, performing port scanning, and recording a scanned port and a corresponding switch state; and determining, by the detection device, a port connection relationship of devices in the radio frequency network based on port and switch state information obtained after a plurality of times of state switching and a plurality of times of port scanning, and the port information. Therefore, the detection device controls switch switching of the devices in the radio frequency network to obtain the port connection relationship of the devices in the radio frequency network.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: February 4, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hu Zhao, Hongwei Xing
  • Patent number: 10530064
    Abstract: A multiport RF switch assembly with integrated impedance tuning capability is described that provides a single RFIC solution to switch between transmit and receive paths in a communication system. Dynamic tuning is integrated into each switch sub-assembly to provide the capability to impedance match antennas or other components connected to the multiport switch. The tuning function at the switch can be used to shape the antenna response to provide better filtering at the switch/RF front-end (RFFE) interface to allow for reduced filtering requirements in the RFFE. Memory is designed into the multiport switch assembly, allowing for a look-up table or other data to reside with the switch and tuning circuit. The resident memory will result in easier integration of the tunable switch assembly into communication systems.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: January 7, 2020
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Olivier Pajona
  • Patent number: 10461431
    Abstract: Described herein are architectures, platforms and methods for electrically tuning radiators in a portable device.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: October 29, 2019
    Assignee: Intel Corporation
    Inventor: Saku Lahti
  • Patent number: 10403967
    Abstract: An electronic device includes a housing that includes a first plate, a second plate, and a side member, the side member including a first conductive portion, a second conductive portion, a third conductive portion, a first insulating portion, and a second insulating portion, a wireless communication circuitry that is electrically connected to a first point of the first conductive portion, wherein the first point is adjacent to the second insulating portion, a ground member that is included in the housing, a first switching circuitry that includes a first terminal electrically connected to a second point of the first conductive portion, which is more distant from the second insulating portion than the first point, and at least one second terminal electrically connected to the ground member through at least one first passive element, and a conductive pattern that is electrically connected to the second point and forms a closed loop.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: September 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Won Kim, No Hwan Park, Ki Sung Bae, Jun Hee Kim
  • Patent number: 10403976
    Abstract: In order to provide an antenna that is small and resonates at a plurality of frequencies, an antenna according to the present invention is provided with: a first conductor of a ring shape, having an air gap; a second conductor arranged inside the ring, with both ends of the second conductor connected to the first conductor, having a first gap; and a third conductor arranged in a region surrounded by a part not including the air gap out of the first conductor, and the second conductor, with both ends connected to the first conductor, having a second gap, and a value obtained by multiplying a length of an outer periphery of a region surrounded by a part including the air gap out of the first conductor, and the third conductor, by capacitance of the air gap is different from a value obtained by multiplying a length of an outer periphery of a region surrounded by the second conductor, the third conductor, and the first conductor, by capacitance of the first gap.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: September 3, 2019
    Assignee: NEC PLATFORMS, LTD
    Inventor: Jun Uchida
  • Patent number: 10361729
    Abstract: A low-frequency antenna module includes two switching units, a first matching circuit, a second matching circuit, and a low-frequency antenna. Each of the two switching units includes an electrical connection point, a first switching point, and a second switching point. The first matching circuit is electrically connected to the two first switching points, the second matching circuit is electrically connected to the two second switching points, and the low-frequency antenna is electrically connected to one of the two electrical connection points. The two switching units are synchronously operated to electrically connect the two electrical connection points to the two first switching points or to the two second switching points. Thus, the low-frequency antenna can be applied to match the first matching circuit in a first low-frequency band or the second matching circuit in a second low-frequency band different from the first low-frequency band.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 23, 2019
    Assignee: AUDEN TECHNO CORP.
    Inventor: Chi-Ming Chiang
  • Patent number: 10355341
    Abstract: A mobile device including a ground plane, a grounding branch, wherein a slot is formed between the ground plane and the grounding branch, a connecting element, wherein the grounding branch is electrically coupled through the connecting element to the ground plane and a feeding element, extending across the slot, and electrically coupled between the grounding branch and a signal source, wherein an antenna structure is formed by the grounding branch and the feeding element.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: July 16, 2019
    Assignee: HTC CORPORATION
    Inventors: Tiao-Hsing Tsai, Chien-Pin Chiu, Hsiao-Wei Wu, Ying-Chih Wang
  • Patent number: 10333227
    Abstract: A waveguide device according to an embodiment includes an electrically conductive member having an electrically conductive surface, a waveguide member extending so as to face along the electrically conductive surface, and stretches of artificial magnetic conductor on both sides of the waveguide member. The waveguide member includes a first portion extending in one direction, and at least two branches extending in mutually different directions from one end of the first portion, the at least two branches including a second portion and a third portion. The second portion has a recess in a side face that connects to one side face of the first portion, the recess reaching the waveguide face.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: June 25, 2019
    Assignees: NIDEC CORPORATION, WGR CO., LTD.
    Inventors: Hideki Kirino, Hiroyuki Kamo
  • Patent number: 10302973
    Abstract: A memristor element is used to create a spectrally programmable optical device. An electromagnetic field is applied across the memristor element in order to alter its spectral properties. In turn, the spectral properties of the electromagnetic radiation optically interacting with the memristor element are also altered. This alteration in spectral properties allows the memristor to be “programmed” to achieve a variety of transmission/reflection/absorption functions.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: May 28, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Samuel James Maguire-Boyle, Aditya B. Nayak
  • Patent number: 10230367
    Abstract: An electronic device and a method a provided. The electronic device includes a first surface, a second surface opposite to the first surface, and a side surface that surrounds at least part of a space between the first and second surfaces; a Radio Frequency (RF) communication circuit; an antenna radiator that forms at least part of at least one of the first surface, the second surface, and the side surface and is connected to the RF communication circuit; a sensor that detects whether an external object contacts the antenna radiator; a switching circuit connected to the antenna radiator and the sensor; and a processor configured to receive a first value from the sensor when the antenna radiator and the sensor are connected to each other and to receive a second value from the sensor when the antenna radiator and the sensor are separated from each other.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: March 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Man Kim, Joo-Han Kim, Jung-Sik Choi, Chul-Hyung Yang, Ji-Woo Lee
  • Patent number: 10224608
    Abstract: An electronic device is provided. The electronic device includes a housing including a first face, a second face, and a side face that at least partially encloses a space between the first face and the second face, a conductive member configured to form at least a portion of the side face, a ground member, at least one communication circuit, and a conductive pattern positioned within the housing, the conductive pattern electrically connected to the communication circuit and the ground member, a first electric path positioned within the housing, and configured to electrically interconnect another end of the conductive member and the communication circuit, a second electric path configured to electrically interconnect the first electric path or the conductive member and the ground member, and a third electric path configured to electrically interconnect the first electric path or the conductive member and the ground member, and including a switching circuit.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: March 5, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-Jae Lee, Kyung-Jong Lee, Sewoong Kim, Soo-Young Jang, Seunghwan Kim, Hosaeng Kim, Jinwoo Jung
  • Patent number: 10223850
    Abstract: An RFID system in which at least one of the RFID tag antenna and the RFID reader antenna has an impedance matching network associated therewith in order to better match the impedances of the two antennas. This impedance matching places the antennas into an over-coupled regime once they are within a reasonable distance of each other (e.g., 2 to 50 mm). It also increases the Q-factor of the improved antenna, which can greatly increase the range at which the RFID reader can read the RFID tag. This improved RFID system may be used in any of a variety of application, including operating a door lock mechanism.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: March 5, 2019
    Assignee: DISNEY ENTERPRISES, INC.
    Inventor: Alanson Sample
  • Patent number: 10186769
    Abstract: An electronic device may be provided with control signal generation circuitry that generates a differential pair of control signals, power supply circuitry that generates a bias voltage, and an antenna having a tuning circuit. First switching circuitry may be coupled to the power supply circuitry and the control signal generation circuitry. Second switching circuitry may be coupled to the tuning circuit. A pair of control lines may be coupled between the first and second switching circuitry. In a first switching mode, the power supply circuitry may transmit the bias voltage to the tuning circuit over one of the control lines. The bias voltage may charge storage circuitry coupled to the tuning circuit. In a second switching mode, the control signal generation circuitry may transmit the differential pair of control signals to the tuning circuit. The tuning circuit may be powered by the storage circuitry in the second switching mode.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: January 22, 2019
    Assignee: Apple Inc.
    Inventors: James G. Judkins, Jing Zhu, Liang Han, Matthew A. Mow, Mattia Pascolini, Ming-Ju Tsai, Thomas E. Biedka, Victor C. Lee, Xu Han
  • Patent number: 10171076
    Abstract: A FET-based RF switch architecture and method that provides for independent control of FETs within component branches of a switching circuit. With independent control of branch FETs, every RF FET in an inactive branch that is in an “open” (capacitive) state can be shunted to RF ground and thus mitigate impedance mismatch effects. Providing a sufficiently low impedance to RF ground diminishes such negative effects and reduces the sensitivity of the switch circuit to non-matched impedances.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: January 1, 2019
    Assignee: pSemi Corporation
    Inventors: Michael Conry, Kevin Roberts, Edward Nicholas Comfoltey
  • Patent number: 10143077
    Abstract: A PCB (Printed Circuit Board) structure at least includes a power layer. The power layer includes a first power shape and a plurality of ground elements. The first power shape is surrounded by the ground elements. The distance between any two adjacent ground elements is shorter than 0.1 wavelength of a predetermined frequency, so as to reduce electromagnetic noise radiation at the predetermined frequency.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: November 27, 2018
    Assignee: QUANTA COMPUTER INC.
    Inventor: Chao-Hung Kuo
  • Patent number: 10135132
    Abstract: An antenna equipment includes an antenna and a board on which the antenna is disposed, and includes an area that is disposed on the board and that is not covered by a metal layer. A first edge of the board is a longer edge of the board in two edges of the board that are close to the antenna, a point that is on the first edge and whose distance with a current maximum point on the first edge is ?/4 is a first point, the current maximum point is on the first edge and that is closest to a feed point of the antenna, and ? is an operating wavelength of the antenna. The area that is not covered by a metal layer includes the first point, and a maximum distance from an edge of the area to the first edge of the board is ?/4.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: November 20, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhengyan Mao, Kemeng Wang, Dejin Zhu, Xiaoping Gao, Yiwen Gong, Song Wu, Wei Wang
  • Patent number: 10096910
    Abstract: A system that incorporates the subject disclosure may include, for example, a method for electrically coupling a first lower frequency radiator of a first antenna to a first upper frequency radiator of a second antenna via a shared first port, electrically coupling a second lower frequency radiator of the first antenna to a second upper frequency radiator of the second antenna via a shared second port, suppressing, at least in part, with at least one first filter, first signals of the first lower frequency radiator from entering the first upper frequency radiator, second signals of the first upper frequency radiator from entering the first lower frequency radiator, or both, and suppressing, at least in part, with at least one second filter, third signals of the second lower frequency radiator from entering the second upper frequency radiator, fourth signals of the second upper frequency radiator from entering the second lower frequency radiator, or both. Other embodiments are disclosed.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: October 9, 2018
    Assignee: Skycross Co., LTD.
    Inventors: Li Chen, III, Frank M. Caimi, Mark T. Montgomery
  • Patent number: 10084236
    Abstract: The present disclosure discloses a tunable antenna and a terminal. The tunable antenna includes a circuit board, an antenna body configured to transmit and receive a signal of a first frequency band and including a feed end and a ground pin, where the feed end is disposed on the circuit board, and an electrical tuning network, where a ground point disposed on the circuit board is connected to the ground pin of the antenna body by using the electrical tuning network, and the electrical tuning network includes an inductor and a first tunable capacitor with a tunable capacitance value, where a load value of the inductor is changed by tuning a first capacitance value of the first tunable capacitor, so that a first effective electrical length of the antenna body is changed.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: September 25, 2018
    Assignee: HUAWEI DEVICE (DONGGUAN) CO., LTD.
    Inventors: Bo Meng, Yi Fan, Wanji An, Hanyang Wang, Dongxing Tu, Shuhui Sun
  • Patent number: 10069206
    Abstract: A variable capacitance device includes: capacitors coupled in series between first and second signal terminal electrodes, each of the capacitors having a dielectric layer, a lower electrode and an upper electrode, a permittivity of the dielectric layer changing according to a voltage applied to the dielectric layer, the lower and upper electrodes sandwiching the dielectric layer; resistance films coupled between the capacitors and a bias terminal electrode; a first insulating film that contacts the resistance films; and a second insulating film that covers the capacitors, the resistance films and the first insulating film, wherein: a thermal conductivity of the first insulating film is larger than that of the second insulating film; and at least one of the resistance films has a pair of connection patterns provided on both ends thereof and resistance patterns that are coupled in parallel between the connection patterns.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: September 4, 2018
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Daiki Ishii, Kentaro Morito
  • Patent number: 10044380
    Abstract: The invention relates to a method for automatically adjusting one or more tunable passive antennas and a single-input-port and single-output-port tuning unit. The invention also relates to an apparatus for radio communication using this method, for instance a radio transceiver. An apparatus for radio communication of the invention comprises: a tunable passive antenna; a feeder; a single-input-port and single-output-port tuning unit; a sensing unit; a transmission and signal processing unit which applies an excitation to the input port, which delivers one or more antenna adjustment instructions, and which delivers one or more tuning unit adjustment instructions; and a control unit which delivers one or more antenna control signals to the tunable passive antenna, and one or more tuning control signals to the single-input-port and single-output-port tuning unit.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: August 7, 2018
    Assignee: Tekcem
    Inventors: Frédéric Broyde, Evelyne Clavelier
  • Patent number: 10033088
    Abstract: The present document discloses an antenna unit and a terminal. The antenna unit disclosed by the present document includes an antenna circuit board, at least two neighboring antennas and an electromagnetic coupling module used for isolating coupling signal transmission between two neighboring antennas, wherein the electromagnetic coupling module is connected in series between the two neighboring antennas. The present document uses the electromagnetic coupling module to isolate signal transmission between the two neighboring antennas, i.e., electric signals in the two antennas are unable to be transmitted to opposite end, thereby reducing signal coupling between the neighboring antennas and improving the isolation between the two neighboring antennas.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: July 24, 2018
    Assignee: Xi'An Zhongxing New Software Co., Ltd.
    Inventors: Lu Zhang, Wei Li
  • Patent number: 9998106
    Abstract: A memristive radio frequency (RF) switch circuit comprises a first metal electrode and a second metal electrode arranged on an insulating substrate and separated by an air gap, wherein the air gap is fifty nanometers (50 nm) or less, and wherein applying and removing an enabling voltage to the memristive RF switch enables the memristive RF switch to pass RF signals between the first electrode and the second electrode even when the enabling voltage is removed from the memristive switch, and wherein applying and removing a disabling voltage to the memristive switch disables the memristive switch.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: June 12, 2018
    Assignee: University of Massachusetts
    Inventors: Qiangfei Xia, Joseph Bardin, Shuang Pi
  • Patent number: 9985602
    Abstract: The invention relates to a device for transmitting and/or receiving radio frequency signals comprising at least one antenna and/or at least one filter realised in printed technology on a dielectric substrate. According to the invention, this device is equipped with means for compensating the permittivity dispersions of the substrate. For this purpose, the device comprises a circuit for measuring the dielectric permittivity of the substrate able to deliver a measured permittivity value and adjustment means able to adjust the impedance of the antenna and/or the frequency response of said filter according to said measured permittivity value.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: May 29, 2018
    Assignee: THOMSON LICENSING
    Inventors: Jean-Luc Robert, Dominique Lo Hine Tong, Philippe Minard
  • Patent number: 9899744
    Abstract: A metamaterial system of a wireless transmission apparatus comprises a metamaterial layer. The metamaterial layer comprises an array of unit cells wherein each of the unit cell comprises a surface having a metal patch with an aperture. The aperture is defined such that a periphery of the aperture is within a periphery of the surface by a spacing distance and an element is disposed within the aperture. The metamaterial system further comprises at least one input RF port placed on a backing layer disposed below the metamaterial layer such that there is no short-circuit between the conductive backing layer and the metamaterial layer; and at least one set of vias connecting the array of unit cells with the at least one input RF port.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: February 20, 2018
    Assignee: Energous Corporation
    Inventors: Harry Contopanagos, Michael A. Leabman
  • Patent number: 9774075
    Abstract: Provided is an electronic device in which, if an antenna element is formed on the surface of a housing, restrictions on the formation of the antenna element are less likely to arise. The following are provided: a rear case, an antenna element, and a power supply unit that supplies power to the antenna element. The antenna unit comprises a first section that is formed by applying a conductive material onto a first main surface of the rear case, and a second section. A dielectric or an insulator is interposed between the first section and the second section.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: September 26, 2017
    Assignee: KYOCERA CORPORATION
    Inventors: Naoki Nishizaka, Daisuke Togashi, Motonori Imamura
  • Patent number: 9761943
    Abstract: An antenna structure includes a ground element, a first radiation branch, a first ground branch, a second radiation branch, and a second ground branch. A first end of the first radiation branch is coupled to a signal source. A first end of the first ground branch is coupled to the ground element. A second end of the first ground branch is coupled to a second end of the first radiation branch. A first end of the second radiation branch is coupled to the second end of the first radiation branch. A first end of the second ground branch is coupled to the ground element. A second end of the second ground branch is coupled to a second end of the second radiation branch.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: September 12, 2017
    Assignee: ACER INCORPORATED
    Inventor: Chung-Wen Yang
  • Patent number: 9735462
    Abstract: Provided is an electronic device in which, if an antenna element is formed on the surface of a housing, restrictions on the formation of the antenna element are less likely to arise. The following are provided: a rear case, an antenna element, and a power supply unit that supplies power to the antenna element. The antenna unit comprises a first section that is formed by applying a conductive material onto a first main surface of the rear case, and a second section. A dielectric or an insulator is interposed between the first section and the second section.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: August 15, 2017
    Assignee: KYOCERA CORPORATION
    Inventors: Naoki Nishizaka, Daisuke Togashi, Motonori Imamura
  • Patent number: 9711858
    Abstract: Antenna structures and methods of operating the same of a dual-feed antenna of an electronic device are described. A dual-feed antenna includes a first antenna element coupled to a controllable circuit that is coupled a first radio frequency (RF) feed, and a second antenna element coupled to a second RF feed. The controllable circuit is configured to electrically connect the first antenna element to the first RF feed in a first antenna configuration and to electrically connect the first antenna element to ground in a second antenna configuration. During the second antenna configuration, the second antenna element is driven by the second RF feed.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: July 18, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Tzung-I Lee, In Chul Hyun, Cheol Su Kim
  • Patent number: 9692099
    Abstract: An antenna-matching device includes a first antenna terminal that is connected to a first radiating element, a second antenna terminal that is connected to a second radiating element, power feeding terminals and that are connected to a power-feeding unit C, an antenna coupling circuit (coupling inductance element L) that is connected in series between the antenna terminals, and a matching unit B that is connected between the antenna terminals and the power feeding terminals. The coupling inductance element L and the matching unit are integrally provided in a substrate. The matching circuit B is connected in series with the signal lines and includes a first resonant circuit and a second resonant circuit that have different resonant frequencies from each other and are coupled with each other. The matching unit B is connected to a power-feeding circuit that includes an RF circuit.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: June 27, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Noboru Kato, Satoshi Ishino