Using Directional Coupler Patents (Class 333/109)
  • Patent number: 10892538
    Abstract: A coupler-integrated board includes a coupler, a first capacitor, a second capacitor, a resistance element, a matching circuit, and a multilayer circuit board. The coupler includes a main line and a secondary line. The first capacitor is connected in parallel with the secondary line. The second capacitor connects another end of the secondary line to a ground. The resistance element connects the other end of the secondary line to the ground. The resistance element has an impedance lower than a normalized impedance at a predetermined frequency. The matching circuit is connected between one end of the secondary line and a coupling port. The matching circuit matches an impedance at the coupling port to the normalized impedance at the predetermined frequency. The multilayer circuit board includes laminated base material layers. The coupler is integrated with the multiplayer circuit board.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: January 12, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kunitoshi Hanaoka
  • Patent number: 10833457
    Abstract: An in-line suspended power sensor coupling configuration situated within a high frequency transmission line housing that allows forward, reverse, and sampling voltage elements to all be produced simultaneously on one double sided printed circuit board (PCB). The power sensor coupling allows for calibrated coupling responses across a much wider frequency range with a single PCB assembly, as opposed to the need to cover equivalently sized frequency ranges with multiple individually fabricated coupling element assemblies.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: November 10, 2020
    Inventor: Jefferson Lexa
  • Patent number: 10797760
    Abstract: An apparatus for simultaneous transmit and receive is provided. The apparatus is capable of rejecting or passing transmitter and receiver signals. The apparatus includes: a transmitter; an antenna (e.g., a shared antenna); a receiver including switches controllable by time varying signals; and a quadrature coupler including first, second, third, and fourth ports, wherein the first port is coupled to the transmitter, wherein the second port is coupled to the antenna, and wherein the third and fourth ports are coupled to the receiver.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: October 6, 2020
    Assignee: Oregon State University
    Inventors: Arun Natarajan, Abhishek Agrawal, Sanket Jain, Robin Garg
  • Patent number: 10777910
    Abstract: A high-isolation dual-band antenna is provided, which may be operated in a first frequency band and a second frequency band, and include a ground zone, two radiators and an isolation zone. The radiators may be disposed at the both sides of the ground zone respectively. The isolation zone may include a main body, a first-slot and two second-slots; the first-slot may be disposed at one end of the main body and the second-slots may be disposed at the both sides of the main body respectively. At least a portion of the first-slot and the second-slots may serve as the isolation section of the first frequency band, and at least a portion of each second-slot may serve as the isolation section of the second frequency band, such that the isolation section of the first frequency band may partially overlap the isolation section of the second frequency band.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: September 15, 2020
    Assignee: ARCADYAN TECHNOLOGY CORPORATION
    Inventor: Min-Chi Wu
  • Patent number: 10623057
    Abstract: In accordance with one or more embodiments, a directional coupler includes a first dielectric cable is configured to receive a first electromagnetic wave from the first port and to generate a second electromagnetic wave that propagates along a transmission medium in a first direction without requiring an electrical return path. A second dielectric cable is configured to couple a first portion of the second electromagnetic wave to a second port, wherein a second portion of the second electromagnetic wave continues to propagate in the first direction along the transmission medium. A third dielectric cable is configured to couple the second portion of the second electromagnetic wave to a third port and to isolate the third port from a third electromagnetic wave propagating along the transmission medium in a second direction that is opposite to the first direction.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: April 14, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Thomas M. Willis, III, Paul Shala Henry
  • Patent number: 10623056
    Abstract: In accordance with one or more embodiments, a splitter includes a first port, a second port and a third port. A first dielectric cable is configured to receive a first electromagnetic wave from the first port and to generate, in response to the first electromagnetic wave, a second electromagnetic wave that propagates in a first direction along a transmission medium without requiring an electrical return path, wherein the transmission medium is a bare or insulated wire. A second dielectric cable in proximity to a first side of the transmission medium is configured to couple a first portion of the second electromagnetic wave to the second port. A third dielectric cable in proximity to a second side of the transmission medium configured to couple a second portion of the second electromagnetic wave to the third port.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: April 14, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Thomas M. Willis, III, Paul Shala Henry
  • Patent number: 10601100
    Abstract: A bi-directional coupler architecture that allows an entire radio frequency coupler to be fully integrated with other circuitry on a single IC substrate. Embodiments of the invention use a lumped component architecture instead of quarter-wave transmission lines to reduce area and limit loss on the primary signal line. In some embodiments, two directional couplers of opposite polarities are implemented at least in part using spiral secondary inductors electromagnetically coupled to a shared primary inductor signal line, thus providing a bi-directional coupler architecture.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: March 24, 2020
    Assignee: pSemi Corporation
    Inventor: Norman L. Frederick, Jr.
  • Patent number: 10542443
    Abstract: A method for testing an air interface device using emulated noise in unassigned uplink resource blocks (RBs) includes, in a network equipment test device including at least one processor, receiving a first downlink signal transmission from an air interface device under test. The method further includes identifying unassigned uplink resource blocks. The method further includes transmitting an uplink signal to the air interface device under test with emulated channel noise in at least one of the unassigned uplink resource blocks. The method further includes receiving, after transmission of the uplink signal to the air interface device under test, a subsequent downlink signal transmission from the air interface device under test. The method further includes determining an effect of the emulated channel noise on resource block assignments.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: January 21, 2020
    Assignee: KEYSIGHT TECHNOLOGIES, INC.
    Inventor: Prasada Rao Devarasetty
  • Patent number: 10438906
    Abstract: A reference circuit includes an integrated circuit (IC) formed on a semiconductor substrate including a first spiral inductor and a second spiral inductor. The first spiral inductor is formed from a first metal layer over the substrate. The second spiral inductor is formed from a second metal layer. The second spiral inductor is offset from the first spiral inductor and includes a first portion overlapping the first spiral inductor. A first capacitor includes a first terminal coupled to receive a radio frequency (RF) signal and a second terminal coupled to a first terminal of the first spiral inductor, and second capacitor includes a first terminal coupled to a second terminal of the first spiral inductor.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: October 8, 2019
    Assignee: NXP USA, INC.
    Inventors: Joseph Staudinger, James Krehbiel
  • Patent number: 10367268
    Abstract: To provide a leaky-wave antenna that allows dual-polarization without limiting an emission range to either side. The antenna includes as an element unit (AE) a CRLH transmission line configured by multiply connecting CRLH unit cells (UC) in a periodic fashion between one ends and the other ends of two parallel lines (La, Lb). The respective unit cells (UC) have a left-handed series capacitor (C1, C2) on each of the two parallel lines (La, Lb) and have a left-handed parallel inductor (L1) between the two parallel lines (La, Lb). When power is fed between the two parallel lines (La, Lb), the two parallel lines (La, Lb) and the series capacitor (C1, C2) serve to emit a vertical polarization component, and the parallel inductor (L1) and a conductor between the two parallel lines (La, Lb) serve to emit a horizontal polarization component.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: July 30, 2019
    Assignee: Denki Kogyo Company, Limited
    Inventors: Ichiro Oshima, Takuya Seki
  • Patent number: 10340575
    Abstract: A directional coupler includes an input terminal, an output terminal, a coupling terminal, a termination terminal, a first ground terminal, second ground terminals, a main line, a first sub line, and a second sub line. A first low pass filter is included between the coupling terminal and the first sub line. A second low pass filter is included between the first sub line and the second sub line. The first low pass filter is electrically connected to the first ground terminal, and the second low pass filter is electrically connected to the second ground terminals.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: July 2, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Akira Tanaka
  • Patent number: 10289144
    Abstract: A power multiplier and method are provided. The power multiplier includes a power multiplying network that is a multiply-connected, velocity inhibiting circuit constructed from a number of lumped-elements. The power multiplier also includes a launching network, and a directional coupler that couples the launching network to the power multiplying network. The power multiplier provides for power multiplication at nominal power generation frequencies such as 50 Hertz, 60 Hertz, and other power frequencies, in a compact circuit.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: May 14, 2019
    Assignee: CPG Technologies, LLC
    Inventor: James F. Corum
  • Patent number: 10263315
    Abstract: A directional coupler includes a first signal transmission line disposed between a signal input terminal and a signal output terminal, a coupled line disposed between a coupled output terminal and a resistance connection terminal and electromagnetically coupled to the first signal transmission line, switching terminals connected to a switching element of an IC chip, and a second signal transmission line in which a connection state with respect to the first signal transmission line is switched in accordance with a connection switching operation between the switching terminals by the switching element. The second signal transmission line is connected in parallel to the first signal transmission line in accordance with the connection switching operation between the switching terminals by the switching element when an electric signal in a first frequency band at low frequency is input to the signal input terminal.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: April 16, 2019
    Assignee: Kyocera Corporation
    Inventor: Tetsuya Okamoto
  • Patent number: 10236240
    Abstract: In one or more embodiments, a substrate includes a patterned conductive layer and a reference layer. The patterned conductive layer includes a pair of first conductive traces, a pair of second conductive traces and a reference trace between the pair of first conductive traces and the pair of second conductive traces. The reference layer is above the patterned conductive layer and defines an opening.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: March 19, 2019
    Assignee: ADVANCED SEMICONDUCTOR ENGINEERING, INC.
    Inventors: Yuan-Hsi Chou, Tsun-Lung Hsieh, Chen-Chao Wang
  • Patent number: 10171112
    Abstract: An RF diplexer is provided that includes a first channel and a second channel. The first channel includes a first primary inductor. Similarly, the second channel includes a second primary inductor. A first directional coupler for the first channel includes a first transformer formed by the first primary inductor and also a first secondary inductor. A first terminal for the first secondary inductor is a coupled port for the first directional coupler. A second directional coupler for the second channel includes a second transformer formed by the second primary inductor and also a second secondary inductor. A first terminal for the second secondary inductor is a coupled port for the second directional coupler.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: January 1, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Yunfei Ma, Chengjie Zuo, David Berdy, Daeik Kim, Changhan Yun, Je-Hsiung Lan, Mario Velez, Niranjan Sunil Mudakatte, Robert Mikulka, Jonghae Kim
  • Patent number: 10158508
    Abstract: Methods, systems, and apparatuses are described for generating a phase-shifted signal in a transmit path and a receive path of a transceiver. When transmitting, a quadrature hybrid in the transmit path generates at least one in-phase signal and at least one quadrature signal based on a modulated signal. Phase shifters generate phase-shifted versions of the modulated signal based on a combination of these signals. When receiving, antennas receive a modulated signal and provide the modulated signal to phase shifters in the receive path. Each phase shifter modifies its received modulated signal. A matching network combines each of the modified modulated signals and provides at least one combined modulated signal to a quadrature hybrid. The quadrature hybrid generates a phase-shifted version of the modulated signal based on the at least one combined signal.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: December 18, 2018
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Michael Boers, Wei Liat Chan, Tirdad Sowlati, Bevin Perumana
  • Patent number: 10135107
    Abstract: A directional coupler according to the invention includes an opening in a wall surface of a waveguide, and a coupling line on an outer side of the waveguide. The opening is configured to not cross a tube axis of the waveguide in plan view, and to emit a circularly polarized wave. The coupling line includes first and second transmission lines and output parts disposed at both ends, the first and second transmission lines extending across the opening to cross the tube axis in plan view and being opposed to each other across the center of the opening. The first and second transmission lines are interconnected at a position displaced from an area vertically above the opening.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: November 20, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Koji Yoshino, Tomotaka Nobue, Kenji Yasui, Yoshiharu Omori, Masafumi Sadahira, Masayuki Kubo
  • Patent number: 10062946
    Abstract: Programmable multi-reflective phase shifters which provide reduced root-mean-square phase error, can be optimized for a desired frequency band, can compensate for process variations arising during manufacture, and can help offset system level performance shortfalls. Embodiments include a hybrid coupler (e.g., a Lange hybrid coupler) in combination with a multi-reflective reactance-based terminating circuit with a number of different configurations that permit various modes of operation, including a thermometric mode, a phase overlap mode with interstitial phase shift states, an extended range phase shift mode, and a “tweak bit” mode. A number of programmable or selectable RF phase shifters can be series or parallel connected to provide a desired gamut of phase shift.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: August 28, 2018
    Assignee: pSemi Corporation
    Inventors: Vikas Sharma, Peter Bacon, Mark Moffat
  • Patent number: 10027292
    Abstract: An apparatus includes a first directional coupler, a second directional coupler, a first detector, and a second detector. A through port of the first directional coupler is coupled to a through port of the second directional coupler. An isolated port of the first directional coupler is coupled to an isolated port of the second directional coupler. A coupled port of the first directional coupler is coupled to the first detector. A coupled port of the second directional coupler is coupled to the second detector. A detected power signal is generated by combining an output of the first detector and an output of the second detector.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: July 17, 2018
    Assignee: MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.
    Inventor: Kohei Fujii
  • Patent number: 10008758
    Abstract: A directional coupler utilizes an inductive element of a power amplifier and a coupled conductive element. The inductive element of the power amplifier is a functioning element within the power amplifier and at least part of the inductive element of the power amplifier is disposed in a multi-layer substrate. At least part of the coupled conductive element is disposed in the multi-layer substrate. The coupled conductive element is configured to be inductively coupled to the inductive element of the power amplifier such that the coupled conductive element carries a first RF signal that is representative of a second RF signal within the inductive element of the power amplifier.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: June 26, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Kiyoshi Kase, Marius Goldenberg, Susanne A. Paul
  • Patent number: 9991933
    Abstract: The invention relates to an attenuator for stepwise attenuating a radio frequency signal. The attenuator comprises a first attenuation module that is configured to stepwise attenuate a radio frequency signal within a first signal frequency range. The attenuator comprises a second attenuation module that is configured to stepwise attenuate a radio frequency signal with a second signal frequency range, wherein the second attenuation module is arranged in parallel to the first attenuation module. The attenuator further comprises a switching element, wherein the switching element switches either the first attenuation module or the second attenuation module to an output node of the attenuator.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: June 5, 2018
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Simon Schmid
  • Patent number: 9964571
    Abstract: A directional coupler is configured to provide a forward and/or a backward signal derived from a high-frequency signal. The directional coupler comprises a coupling element coupled to a main line, wherein the main line is configured to transport the high frequency signal. The directional coupler further comprises a signal line connecting the coupling element to a measuring port. The signal line comprises a defected ground structure inserted between the coupling element and the measuring port.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: May 8, 2018
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Andreas Andrei, Raimon Göritz
  • Patent number: 9960496
    Abstract: An antenna having a low loss rate, high radiation directivity, and wideband characteristics in a millimeters wavelength region to be suitable for 5th-Generation (5G) communication, and having a low-profile structure to reduce air resistance when installed in a vehicle includes a feed circuit through which a radio signal provided from a feed point is transmitted; and a plurality of radiation units, each radiation unit including a diverging wall configured to cause the radio signal transmitted through the feed circuit to diverge in at least two directions, and at least two diverging cavities through which radio signals diverged by the diverging wall are transmitted. A vehicle including the antenna is described.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: May 1, 2018
    Assignee: Hyundai Motor Company
    Inventor: Dongjin Kim
  • Patent number: 9954562
    Abstract: Circuits and methods related to radio-frequency (RF) power couplers. In some embodiments, an RF circuit can include a first circuit having a frequency response that includes a feature within a selected frequency range, and a second circuit coupled to the first circuit such that the feature of the frequency response is at least in part due to the coupling. The RF circuit can further include an adjustment circuit configured to move the feature away from the selected frequency range. In some embodiments, such an RF circuit can be implemented in a packaged module which in turn can be included in a wireless device.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: April 24, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventors: Russ Alan Reisner, John C. Baldwin
  • Patent number: 9838055
    Abstract: A directional coupler including a main line, a sub-line, an input terminal, an output terminal, a coupling terminal and an isolation terminal, wherein the main line includes a first main-line section formed on a first layer, and a second main-line section formed on a second layer; the first and the second main-line sections are connected in parallel between the input and the output terminals; the sub-line includes a first sub-line section formed on the first layer, and a second sub-line section formed on the second layer; the first and the second sub-line sections are connected in parallel between the coupling and the isolation terminals; the first main-line section and the first sub-line section are disposed in close proximity to each other to generate electromagnetic coupling; and the second main-line section and the second sub-line section are disposed in close proximity to each other to generate electromagnetic coupling.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: December 5, 2017
    Assignee: TDK Corporation
    Inventor: Yukio Mitake
  • Patent number: 9812757
    Abstract: Aspects of this disclosure relate to a radio frequency coupler with a multi-section coupled line. In an embodiment, an apparatus includes a radio frequency coupler that includes a power input port, a power output port, a coupled port, a multi-section coupled line, and a switch configured to adjust an effective length of the multi-section coupled line electrically connected to the coupled port.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: November 7, 2017
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Nuttapong Srirattana, David Scott Whitefield, David Ryan Story, Zhiyang Liu
  • Patent number: 9799444
    Abstract: This disclosure relates generally to directional couplers. In one embodiment, a directional coupler includes a first port, a second port, a third port, a first inductive element, a second inductive element, a first switchable path, and a second switchable path. The first inductive element is coupled between the first port and the second port, while the second inductive element is mutually coupled to the first inductive element. The first switchable path is configured to be opened and closed, wherein the first switchable path is coupled between a first location of the second inductive element and the third port. The second switchable path is configured to be opened and closed, wherein the second switchable path is coupled between a second location of the second inductive element and the third port. In this manner, a directivity of the directional coupler can be switched between a forward direction and a reverse direction.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: October 24, 2017
    Assignee: Qorvo US, Inc.
    Inventors: Marcus Granger-Jones, John Robert Siomkos, Jeppe Korshøj Bendixen, John Avery Capwell, Jayanti Jaganatha Rao
  • Patent number: 9793592
    Abstract: Aspects of this disclosure relate to a radio frequency coupler with a decoupled state. In an embodiment, an apparatus includes a radio frequency coupler and a switch network. The radio frequency coupler has at least a power input port, a power output port, a coupled port, and an isolated port. The switch network can electrically connect a termination impedance to the isolated port in the first state, and the switch network can decouple an RF signal traveling between the power input port and the power output port from the isolated port and the coupled port in a second state.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: October 17, 2017
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Nuttapong Srirattana, David Scott Whitefield, David Ryan Story
  • Patent number: 9780429
    Abstract: The disclosure is directed to semiconductor structures and, more particularly, to a three dimensional microstrip branchline coupler and methods of manufacture. The structure includes a plurality of through silicon vias and conductive lines electrically connected to a first end and a second end of respective ones of the plurality of through silicon vias. A first through silicon via of the plurality of through silicon vias forms a first port of a three dimensional (3D) branchline coupler. A second through silicon via of the plurality of through silicon vias forms a second port of the 3D branchline coupler. A third through silicon via of the plurality of through silicon vias forms a third port of the 3D branchline coupler. A fourth through silicon via of the plurality of through silicon vias forms a fourth port of the 3D branchline coupler.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: October 3, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Barbara S. DeWitt, Essam Mina, B M Farid Rahman, Guoan Wang
  • Patent number: 9755608
    Abstract: A technique relates to a superconducting microwave device. A left-handed resonator include at least one unit cell. A non-linear dispersive medium is connected to the left-handed resonator, such that one end of the left-handed resonator is connected to the non-linear dispersive medium and an opposite end of the left-handed resonator is connected to a port. The left-handed resonator and the non-linear dispersive medium are configured to output a quantum signal in a squeezed state.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: September 5, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • Patent number: 9705614
    Abstract: A test arrangement includes a multi-port test interface having a first waveguide coupled to a plurality of second waveguides. The first waveguide is arranged to propagate an input signal and each of the second waveguides is arranged to output the input signal, providing a plurality of test signals to be supplied to a communications apparatus. Such a test interface may also be used to output respective channel signals in a multiplexed signal received from a communications apparatus. The test interface permits the provision and/or monitoring of a large number of channel signals without separate respective connections to the communications apparatus. This may be particularly useful where tests are performed in a constrained space and/or where repeated access to the apparatus is impractical. The simultaneous provision of many channel signals may allow evaluation of co-channel interference.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: July 11, 2017
    Assignee: ASTRIUM LIMITED
    Inventor: Ian Morris
  • Patent number: 9692103
    Abstract: Aspects of this disclosure relate to a radio frequency coupler and a switch between a port of the radio frequency coupler and an adjustable termination impedance circuit. In an embodiment, an apparatus includes a radio frequency (RF) coupler, a termination impedance circuit, and a switch circuit. The RF coupler can provide an indication of forward RF power at a coupled port in a forward power state and provide an indication of reverse RF power at an isolated port in a reverse power state. The termination impedance circuit can provide an adjustable termination impedance. The switch circuit can electrically connect the termination impedance circuit to the isolated port in the forward power state and electrically isolate the termination impedance circuit from the isolated port of the RF coupler in the reverse power state.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: June 27, 2017
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Nuttapong Srirattana, David Scott Whitefield, David Ryan Story
  • Patent number: 9685992
    Abstract: To provide network connectivity in a building using existing electrical wiring and circuitry, a circuit panel network system is provided to interface between a network connection and the electrical circuit. Traditional breakers on the electrical panel that provide overload circuit-protection devices can be replaced with circuit breaker devices that have transceivers and power line communication chipsets in addition to overload circuit-protection devices. A network interface unit that receives broadband network connectivity from a network demarcation point inside or outside the building can wirelessly transfer data to and from the circuit breaker devices, which then distribute the data over the electrical circuits via the power line communication chipsets on the circuit breaker devices.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: June 20, 2017
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Robert Bennett, Irwin Gerszberg
  • Patent number: 9673504
    Abstract: A miniaturized multi-sectioned, directional coupler using a multi-layer MMIC process, the coupler comprising, a monolithic microwave integrated circuit, having a central section with a relatively tight coupling, surrounded by sections of lighter coupling, the relatively tight coupling being comprised of a pair of spiral coupled lines, and the lighter coupling being comprised of meandered edge couple lines with capacitive loading of the lines in several places.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: June 6, 2017
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: David E. Meharry
  • Patent number: 9653771
    Abstract: A directional coupler includes: a main line connecting an input port and an output port; first to third subline sections each of which is formed of a line configured to be electromagnetically coupled to the main line; a first matching section provided between the first subline section and the second subline section; and a second matching section provided between the second subline section and the third subline section. The first and second matching sections are configured to cause changes in phase of high frequency signals passing therethrough, and have mutually different characteristics so as to create two attenuation poles in the frequency response of the coupling of the directional coupler.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: May 16, 2017
    Assignee: TDK CORPORATION
    Inventors: Noriaki Ootsuka, Takeshi Kijima, Yasunori Sakisaka, Yuta Ashida
  • Patent number: 9647314
    Abstract: A directional coupler for a wireless communication device includes a first input port, a first output port, a second input port, a second output port, and a coupled port. The first input port and the first output port are respectively configured to receive and provide a first signal to be transmitted from the wireless communication device. The second input port and the second output port are respectively configured to receive and provide a second signal to be transmitted from the wireless communication device. A coupled port is configured to selectively provide a coupled signal corresponding to each of, in respective modes, the first signal and the second signal.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: May 9, 2017
    Assignee: Marvell International Ltd.
    Inventors: Huy Thong Nguyen, Poh Boon Leong, Xiaowei Zhong, Sun Shuo
  • Patent number: 9614269
    Abstract: Aspects of this disclosure relate to a radio frequency coupler and an adjustable termination impedance circuit. In an embodiment, an apparatus includes a radio frequency coupler and a termination impedance circuit configured to provide an adjustable termination impedance, in which the termination impedance circuit includes two switches and a passive impedance element in series between a reference potential and a selected port of the RF coupler, the selected port being one of an isolated port of the RF coupler or a coupled port of the RF coupler.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: April 4, 2017
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Nuttapong Srirattana, David Scott Whitefield, David Ryan Story
  • Patent number: 9484875
    Abstract: An active attenuator is disclosed. The attenuator includes a divider to divide an input signal into two signals, a phase shifter to shift a phase of one of output signals of the divider, and a combiner to combine an output of the phase shifter with another of output signals of the divider. The phase shifter includes a coupler and two reflectors, or two amplifiers to cause a phase difference between two signals.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: November 1, 2016
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Osamu Anegawa
  • Patent number: 9450572
    Abstract: A self-cascadable phase shifter having a two corresponding pairs of input and output pins. Each pair of input and output pins are interconnected by phase delay circuitry that is isolated from phase delay circuitry interconnecting the other pair of input and output pins so that each pair of input and output pins produces, for example, a 90 degree phase shift. The resulting phase shifter can be used to produce a 90 degree by using one pair of input and output pins or cascading both pairs of input and output pins to provide a 180 degree delay.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: September 20, 2016
    Assignee: Anaren, Inc.
    Inventors: Bo Jensen, Chong Mei
  • Patent number: 9444561
    Abstract: The subject matter described herein includes methods, systems, and computer readable media for simulating per-UE Doppler shifts. One exemplary method includes generating uplink signals to be transmitted from a plurality of different simulated UEs to an air interface device under test. The method further includes applying per-UE Doppler shifts to the signals, wherein applying per-UE Doppler shifts includes applying different Doppler shifts to at least some of the signals. The method further includes transmitting the signals to the air interface device under test.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: September 13, 2016
    Assignee: IXIA
    Inventors: Prasada Rao Devarasetty, Zhiyong Yan
  • Patent number: 9418945
    Abstract: An integrated circuit includes a signal line for carrying a radio frequency signal; a coupling line inductively coupled to the signal line for delivering an induced signal in dependence on the radio frequency signal; a connecting line connected to a pick-off point of the coupling line for picking off the induced signal from the coupling line; and a conductive part for shielding the coupling line against electromagnetic interference and for enhancing inductive coupling between the signal line and the coupling line. The conductive part may have a uniform flat surface facing the coupling line. The signal line may extend parallel to the surface. The coupling line may extend parallel to the signal line and may be arranged between the surface and the signal line.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 16, 2016
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Ralf Reuter, Bernhard Dehlink
  • Patent number: 9416032
    Abstract: Resources, such as water, energy, power, amount of de-scaling chemicals, device lifetimes, data analytics and system depreciation may be conserved through the use of dual-field electric and magnetic probes that create and apply electromagnetic fields to liquids, such as water.
    Type: Grant
    Filed: December 27, 2015
    Date of Patent: August 16, 2016
    Assignee: Reverse Ionizer Systems, LLC.
    Inventors: Patrick J. Hughes, Desmond A. Fraser, Hossein Ghaffari Nik, Richard B. McMurray, Shelley Marie Grandy, Akrem Hassen Adem Aberra
  • Patent number: 9311812
    Abstract: A transmitter in an RFID system, the transmitter includes a signal generator which has a PIN diode and generates a first signal, a directional unit connected to a cathode of the PIN diode; and an antenna connected to the directional unit, wherein the signal generator has a first terminal configured to receive a first control signal to control a frequency band of the first signal and a second terminal configured to receive a second control signal to control a modulation depth of the first signal.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: April 12, 2016
    Assignee: FAVEPC INC.
    Inventors: Chun-Liang Tsai, Shao-Chang Chang
  • Patent number: 9276552
    Abstract: A directional coupler that provides directional coupling and an impedance transformation is disclosed. In one embodiment, the directional coupler includes a low pass filter having a filter inductor that is coupled between an input port and an output port and a filter capacitor coupled between the output port and ground. The directional coupler also includes detector circuitry wherein the filter inductor is magnetically coupled to a detector inductor in the detector circuitry such that current passing through the filter inductor generates a detector current through the detector inductor. Furthermore, the low pass filter and the detector circuitry cooperate to transform a first impedance presented at the output port to a second impedance presented at the input port. Accordingly, the filter inductor is used in the low pass filter to provide an impedance transformation so as to operate with the detector circuitry to provide a detector current for directional coupling.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: March 1, 2016
    Assignee: RF Micro Devices, Inc.
    Inventor: David E. Jones
  • Patent number: 9240766
    Abstract: A coupling circuit, including: a coupler including a first conductive line and a second conductive line coupled to the first one; at each end of the second line of the coupler, a two-output signal splitter; and at each output of each splitter, a filtering function.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: January 19, 2016
    Assignee: STMICROELECTRONICS (TOURS) SAS
    Inventors: Claire Laporte, Hilal Ezzeddine
  • Patent number: 9178264
    Abstract: A directional coupler according to the present invention includes a primary line for transmitting a transmission signal; an input port for inputting the transmission signal to the primary line; an output port for outputting the transmission signal from the primary line; a secondary line for electromagnetically coupling with the primary line to extract part of the transmission signal; a coupling port provided at one end of the secondary line; an isolation port provided at the other end of the secondary line; and a low pass filter unit having a function of low pass filter, disposed between the secondary line and the coupling port.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: November 3, 2015
    Assignee: TDK CORPORATION
    Inventors: Hajime Kuwajima, Toshiyasu Fujiwara, Naoto Ohyama, Yoshikazu Tsuya, Masami Sasaki
  • Patent number: 9123982
    Abstract: A directional coupler is disclosed integrated on a single chip and an integrated circuit based on a standard CMOS process and relates to a field of radio frequency communication. In exemplary implementations, by using a standard CMOS process technology, the directional coupler integrated by a CMOS process is formed by a coil wound by a upper layer of metal lines, a coil wound by a lower layer of metal lines, two tuning capacitor array, and a matching resistor. Two terminals of the coil are a direct terminal and an input terminal; two terminals of the coil are a coupled terminal and an isolation terminal; the terminals of the coils and are intersected at 90°; the coil is wound by an upper metal layer and the coil is wound by a lower metal layer. Further, the insertion loss is low and the isolation degree is large.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: September 1, 2015
    Assignee: Peking University
    Inventors: Le Ye, Jiayi Wang, Huailin Liao, Ru Huang
  • Patent number: 9035718
    Abstract: A directional coupler includes in a laminate block, a first main line, a first sub-line, a second sub-line, and a second main line sequentially provided in a lamination direction of layers. Further, each of the first main line, the first sub-line, the second sub-line, and the second main line is divided into at least two divided coil conductors. Furthermore, at least two divided ground conductors are provided between the first sub-line and the second sub-line.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: May 19, 2015
    Assignee: Murata Manufacturing Co. Ltd.
    Inventor: Ikuo Tamaru
  • Patent number: 9035717
    Abstract: A balun transformer includes an unbalanced terminal, two balanced terminals, a directional coupler, a low pass filter, and a high pass filter. The directional coupler includes first, second, third and fourth terminals. The first terminal is connected to the unbalanced terminal. A predetermined phase difference exists between the output signal of the second terminal and the output signal of the third terminal. The second terminal is connected to the first terminal by a line constituting the directional coupler. The low pass filter is connected between the second terminal and one of the balanced terminals. The high pass filter is connected between the third terminal and the other balanced terminal.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: May 19, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Akira Tanaka
  • Patent number: 9024702
    Abstract: Disclosed is a low phase shift voltage variable attenuator. The low phase shift voltage variable attenuator may include: a first directional coupler including a first input terminal in which a signal is input, a first isolation terminal connected to a ground power source through a termination resistor, a first coupling terminal, and a first through terminal; a second directional coupler including a second input terminal through which an attenuated signal, which is the attenuated input input signal, is output, a second isolation terminal connected to a ground power source through a termination resistor, a second coupling terminal, and a second through terminal; and a signal attenuating unit connected to the first coupling terminal, the first through terminal, the second coupling terminal, and the second through terminal, and configured to attenuate a signal transmitted through the first directional coupler to transmit the attenuated signal to the second directional coupler.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: May 5, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong Hwan Shin, Seong Mo Moon, In Bok Yom