Having Semiconductor Operating Means Patents (Class 333/103)
  • Patent number: 10355647
    Abstract: Doherty power amplifier combiner with tunable impedance termination circuit. A signal combiner can include a balun transformer circuit having a first coil and a second coil. The first coil can be implemented between a first port and a second port. The second coil can be implemented between a third port and a fourth port. The first port and the third port can be coupled by a first capacitor. The second port and fourth port can be coupled by a second capacitor. The first port can be configured to receive a first signal. The fourth port can be configured to receive a second signal. The second port can be configured to yield a combination of the first signal and the second signal. The signal combiner can include a termination circuit that couples the third port to a ground. The termination circuit can include a tunable impedance circuit.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 16, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Kunal Datta, Reza Kasnavi, Aleksey A. Lyalin
  • Patent number: 10312961
    Abstract: An apparatus comprises an input port, an output port, and a resonant receive switch circuit. The resonant receive switch circuit may be coupled between the input port and the output port. The resonant receive switch circuit may comprise a switch and an input matching circuit. When the switch is in a non-conducting state, a signal at the input port is passed to the output port. When the switch is in a conducting state, the signal at the input port is prevented from reaching the output port.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: June 4, 2019
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Victor Korol, Roberto Aparicio Joo, Naveen Krishna Yanduru
  • Patent number: 10312901
    Abstract: An apparatus includes a drain node, a plurality of source nodes and a gate node. The drain node may be configured to transfer a drain signal along a first axis from a first port to a second port. The source nodes may be (i) distributed along the first axis and (ii) configured to transfer a plurality of source signals along a second axis from the drain node to a ground node. The gate node may be (i) arranged in parallel to the drain node and (ii) configured to control the source signals in response to a gate voltage. The drain node, the source nodes and the gate node generally form a traveling-wave switch that blocks a slot mode current through the source nodes.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: June 4, 2019
    Assignee: MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.
    Inventor: Qun Xiao
  • Patent number: 10298178
    Abstract: A communication apparatus includes an antenna and a receive chain. The receive chain includes a switching transistor, and amplification transistor and a discharge transistor. The amplification transistor has a control terminal coupled to a current path terminal of the switching transistor. The discharge transistor has a current path coupled between the control terminal of the amplification transistor and a ground terminal. The discharge circuit is configured to discharge an intrinsic capacitance of the switching circuit when the switching transistor is in an off state.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: May 21, 2019
    Assignee: STMicroelectronics SA
    Inventor: Laurent Chabert
  • Patent number: 10277211
    Abstract: A fast response time, self-activating, adjustable threshold limiter including a limiting element LE, a first coupling element CE1 electrically connected from a signal node of LE to a control input of LE, and a second coupling element CE2 electrically connected from the control input of LE to a nominal node of LE. An initial bias (control) voltage is also supplied to the control input of LE to dynamically control the limiting threshold for the limiter. Embodiments include usage of self-activating adjustable power limiters in combination with series switch components in a switch circuit in lieu of conventional shunt switches.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: April 30, 2019
    Assignee: pSemi Corporation
    Inventors: Jianhua Lu, Peter Bacon, Naveen Yanduru, Edward Nicholas Comfoltey, Michael Conry, Chieh-Kai Yang
  • Patent number: 10171114
    Abstract: A radio frequency switch apparatus includes switching circuits connected between respective signal terminals and an antenna terminal. Each of the switching circuits includes a series switching circuit and a shunt switching circuit configured to switch a signal band on and off. An inductor circuit includes an inductor device connected between at least one shunt switching circuit of the switching circuits and a ground. The inductor device suppresses noise and passes the signal band by being resonant with a capacitance present upon the shunt switching circuit being turned off.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: January 1, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Seong Jong Cheon, Sung Jae Yoon, Hyun Jin Yoo, Se Jong Kim
  • Patent number: 10141927
    Abstract: A switch architecture having open reflective unselected ports. Signals can be selectively coupled between a common port and at least one selectable port through series connected switches. When one or more port is selected, the remaining ports are opened. In addition, associated “shuntable” switches from each of the selectable ports to ground are always open, regardless of the ON or OFF state of the series switches; thus, there is no normally active connection of the selectable ports to ground, but the presence of the shuntable switches provides electrostatic discharge protection for all ports. Embodiments of the invention allow configurability between a traditional architecture and an open reflective unselected port architecture, and include integrated circuit and field effect transistor embodiments.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: November 27, 2018
    Assignee: pSemi Corporation
    Inventors: Tero Tapio Ranta, Chih-Chieh Cheng
  • Patent number: 10109911
    Abstract: The invention relates to a driver circuit and an active transmitter device, a series circuit consisting of a first capacitor (4) and a second capacitor (12) being charged to a reference voltage by way of a charging current and the charged capacitors being discharged via the inductor (1) by an oscillating discharge, the discharge being terminated when the current through the inductor has completed an entire oscillation period or a multiple thereof.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: October 23, 2018
    Assignee: Continental Automotive GmbH
    Inventors: Herbert Froitzheim, Dieter Sass, Norbert Van Der Heyd
  • Patent number: 10090834
    Abstract: A radio frequency antenna switch includes an antenna port, a radio frequency signal port, and at least one branch connected to the antenna port or the radio frequency signal port, where each branch includes multiple transistors which are connected in a stacked manner. Each transistor in the multiple transistors has a multi-finger structure, comprising at least one first finger used as a source and at least one second finger used as a drain. Each first finger is connected, using multiple first vias, to a source corresponding to the first finger, and each second finger is connected, using multiple second vias, to a drain corresponding to the second finger. The number of the first vias and the number of the second vias of a preset number of transistors in the multiple transistors progressively decrease in a direction away from the antenna port.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: October 2, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jinger Yang, Yusong Chi, Jinhan Fan
  • Patent number: 10070437
    Abstract: Methods for using a detector to monitor and detect channel occupancy are disclosed. The detector resides on a station within a network using a framed format having a periodic time structure. When non-cooperative transmissions are detected by the network, the detector assesses the availability of a backup channel enabling migration of the network. The backup channel serves to allow the network to migrate transparently when the current channel becomes unavailable. The backup channel, however, could be occupied by another network that results in the migrating network interfering with the network already using the backup channel. Thus, the detector detects active transmission sources on the backup channel to determine whether the backup channel is occupied. Methods for using the detector include scheduling detection intervals asynchronously. The asynchronous detection uses offsets from a reference point within a frame.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: September 4, 2018
    Assignee: Shared Spectrum Company
    Inventors: Mark Allen McHenry, Dmitry Dain, Eugene Livis, Karl Steadman, Olga Ritterbush
  • Patent number: 10070181
    Abstract: The present disclosure provides a satellite signal reception system comprising a low noise block down-converter for receiving satellite signals; a plurality of receivers configured to transmit the satellite signals from the low noise block down-converter to a display device; and a power splitter. The power splitter includes a first port electrically connected to the low noise block down-converter via a single cable; a plurality of second ports electrically connected to the plurality of receivers; a signal-distributing circuit electrically connecting the first port to the plurality of second ports; a plurality of power-supplying circuits electrically connecting the plurality of second ports to the first port; and a command-transmitting circuit electrically connecting the plurality of second ports to the first port, wherein the command-transmitting circuit includes a controller unit programmed to forward DiSEqC commands from the plurality of second ports to the first port in a first-in-first-out manner.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: September 4, 2018
    Assignee: Microelectronics Technology, Inc.
    Inventors: Kuotien Chang, Chia Lun Chen
  • Patent number: 10042029
    Abstract: A method of calibrating a test instrument comprises determining a first response of a calibration device on the test instrument over a first set of operating ranges, determining a derived second response of the calibration device on the test instrument over a second set of operating ranges based on the first response, measuring the second response of the calibration device on the test instrument over the second set of operating ranges, and determining correction factors of the test instrument for the second set of operating ranges based on a comparison between the measured second response and the derived second response.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: August 7, 2018
    Assignee: Keysight Technologies, Inc.
    Inventors: Joel P. Dunsmore, Johan Ericsson
  • Patent number: 10027366
    Abstract: A technology is provided for handling signals with defined power levels that are received at an antenna port. The signals can be received at a first antenna port, wherein the first antenna port is coupled to a plurality of PIN diodes positioned in parallel in between one or more transmission lines with a defined impedance. The defined power levels associated with the signals can be determined to exceed a predetermined threshold. The signals with the defined power levels that exceed the predetermined threshold can be redirected to a second antenna port, wherein the second antenna port is coupled to the plurality of PIN diodes positioned in parallel in between the one or more transmission lines with the defined impedance.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: July 17, 2018
    Assignee: Raytheon Company
    Inventors: William L. Cagle, Toshikazu Tsukii
  • Patent number: 9960802
    Abstract: Systems, apparatuses and methods are disclosed providing signal conditioning circuits configured to condition RF signals, and an interface in communication with the signal-conditioning circuits, the interface including M inputs and N outputs, each of the quantities M and N greater than 1. The interface is configured so that each of at least two of the M inputs is coupled to a separate output through a separate switch.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: May 1, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventor: Ryan Weichih Ku
  • Patent number: 9960834
    Abstract: A device for supporting wireless communication is provided. The device includes a transceiver, an antenna, and a radio frequency (RF) front end system communicatively coupled to the transceiver and the antenna. The RF front end system may include: a RF sampling block coupled to the transceiver and configured to sample signals received from the transceiver and output voltage signals; a RF switching logic coupled to the RF sampling block to receive the voltage signals and configured to switch the front end RF system between a transmitting mode and a receiving mode; a RF transmission gain block coupled to the RF switching logic and configured to increase a transmission power of the signals received from the transceiver; and a RF receiving gain block coupled to the RF switching logic and configured to remove noise signals contained in radio frequency signals received from the antenna.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: May 1, 2018
    Assignee: CASSIA NETWORKS INC.
    Inventors: Kunpeng Zhang, Fuyong Zhao
  • Patent number: 9923602
    Abstract: A single-ended data transmission system transmits a signal having a signal voltage that is referenced to a power supply voltage and that swings above and below the power supply voltage. The power supply voltage is coupled to a power supply rail that also serves as a signal return path. The signal voltage is derived from two signal supply voltages generated by a pair of charge pumps that draw substantially same amount of current from a power supply.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: March 20, 2018
    Assignee: Rambus Inc.
    Inventors: John W. Poulton, Frederick A. Ware, Carl W. Werner
  • Patent number: 9876496
    Abstract: A radio frequency switch circuit, according to examples, includes a switching circuit controlled to be in a turned on or turned off state on the basis of a gate signal to thereby allow a radio frequency signal to pass or be blocked; a voltage dividing circuit connected to terminals of the switching circuit that the radio frequency signal passes through and outputting intermediate voltage between the terminals by a voltage dividing node; and an impedance circuit connected between the voltage dividing node and a body terminal of the switching circuit.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: January 23, 2018
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Jin Yoo, Jong Myeong Kim, Yoo Hwan Kim, Hyun Hwan Yoo, Yoo Sam Na, Dae Seok Jang
  • Patent number: 9866259
    Abstract: A transmit/receive module includes an integrated control circuit that is configured to operate in transmit and receive modes. In the transmit mode, the integrated control circuit converts a digital input signal into a plurality of phase shifted RF transmit signals. In the receive mode, the integrated control converts an RF receive signal into a digital output signal. The transmit/receive module further includes a plurality of transmit/receive integrated circuits connected. Each of the transmit/receive integrated circuits amplify one of the RF transmit signals using a power amplifier during the transmit mode, and amplify one of the RF receive signals using a low noise amplifier during the receive mode. The integrated control circuit biases the power amplifier and calibrates a power level the power amplifier in the transmit mode. The integrated control circuit protects the integrated control circuit from damage by controlling the low noise amplifier during the receive mode.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 9, 2018
    Assignee: Infineon Technologies AG
    Inventor: Alexandros Margomenos
  • Patent number: 9847804
    Abstract: Aspects of this disclosure relate to reducing insertion loss associated with a bypass path. In an embodiment, an apparatus includes a first switch having at least two throws, a second switch having at least two throws, a bypass path between the first switch and the second switch, and at least one inductor. The at least one inductor is configured to compensate for capacitance associated with the bypass path to cause insertion loss of the bypass path to be reduced.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: December 19, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventors: Junhyung Lee, Bipul Agarwal, Yong Hee Lee, Junwon Heo
  • Patent number: 9843306
    Abstract: A tuner circuit includes a DC (Direct Current) cut-off unit configured to cut off a DC component in a signal received from an antenna, a switching unit configured to transmit the signal by being turned on when a bias voltage is applied, a high pass filter unit configured to pass only a high frequency component in a signal having passed the switching unit, and a low noise amplifier configured to output a signal having passed a high frequency filter by amplifying the signal.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: December 12, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Young Keun Kim
  • Patent number: 9831866
    Abstract: According to embodiments of the present invention, a switching circuit is provided. The switching circuit includes a transmission line arrangement including a plurality of transmission lines coupled to each other, and at least one switching element arrangement coupled to at least one transmission line of the plurality of transmission lines, wherein, in a first mode of operation, the at least one switching element arrangement is configured in a first state, wherein, in a second mode of operation, the at least one switching element arrangement is configured in a second state, and wherein the transmission line arrangement is configured to, depending on whether the at least one switching element arrangement is configured in the first state or the second state, generate a standing wave from an input signal received by the transmission line arrangement for coupling into an output signal, wherein the output signal is transmitted from the transmission line arrangement.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: November 28, 2017
    Assignee: Nanyang Technological University
    Inventors: Kaixue Ma, Shou Xian Mou, Kiat Seng Yeo
  • Patent number: 9769594
    Abstract: A device for supporting wireless communication is provided. The device includes a transceiver, an antenna, and a radio frequency (RF) front end system communicatively coupled to the transceiver and the antenna. The RF front end system may include: a RF sampling block coupled to the transceiver and configured to sample signals received from the transceiver and output voltage signals; a RF switching logic coupled to the RF sampling block to receive the voltage signals and configured to switch the front end RF system between a transmitting mode and a receiving mode; a RF transmission gain block coupled to the RF switching logic and configured to increase a transmission power of the signals received from the transceiver; and a RF receiving gain block coupled to the RF switching logic and configured to remove noise signals contained in radio frequency signals received from the antenna.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: September 19, 2017
    Assignee: CASSIA NETWORKS INC.
    Inventors: Kunpeng Zhang, Fuyong Zhao
  • Patent number: 9762232
    Abstract: A semiconductor device includes: a first field-effect transistor configured to have a source connected to a reference potential node; a second field-effect transistor configured to have a source connected to a drain of the first field-effect transistor, and a gate connected to the source of the first field-effect transistor; a gate signal node configured to input a gate signal therein; a first resistor configured to be connected between the gate signal node and a gate of the first field-effect transistor; and a first capacitor and a switch circuit configured to be connected between a drain of the second field-effect transistor and the gate of the first field-effect transistor, in which the switch circuit is connected in series with the first capacitor.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: September 12, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Yu Yonezawa, Yoshiyasu Nakashima
  • Patent number: 9755681
    Abstract: The present invention relates to various embodiments of a Radio-Frequency (RF) front-end for use in a receiver, a diversity receiver and a method for operating a diversity receiver.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: September 5, 2017
    Assignee: Intel Mobile Communications GmbH
    Inventors: Michael Wilhelm, Bernd Adler, Mikael Bergholz Knudsen
  • Patent number: 9729190
    Abstract: An apparatus includes an impedance circuit and a plurality of inductors coupled to the impedance circuit. Each of the plurality of inductors is coupled in parallel to a corresponding switch of a plurality of switches.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: August 8, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Alon Yehezkely, Tamir Levinger, Sagi Kupferman, Sergey Levin
  • Patent number: 9685687
    Abstract: In accordance with an embodiment, a circuit includes a directional coupler having a plurality of ports comprising an input port, a transmitted port, an isolated port and a coupled port, and an adjustable termination coupled to at least one of the plurality of ports.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: June 20, 2017
    Assignee: Infineon Technologies AG
    Inventors: Valentyn Solomko, Bogdan-Nicolae Tanc
  • Patent number: 9680463
    Abstract: A circuit includes multiple switching networks coupled between corresponding multiple RF ports and a common RF port. Each of the multiple switching networks includes a first switch between its corresponding RF port and the common RF port. At least one of the multiple switching networks includes a selectable network between the first switch and the common RF port. The selectable network provides a DC path in a first state and a series capacitance in a second state. A control circuit is configured to establish an RF path by activating a first switch and by deactivating other first switches. The control circuit is also configured to establish an RF path by placing a selectable network in the first state when the control circuit operates in a first mode and by placing a selectable network in the second state when the control circuit operates in a second mode.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: June 13, 2017
    Assignee: Infineon Technologies AG
    Inventors: Winfried Bakalski, Nikolay Ilkov
  • Patent number: 9667215
    Abstract: A high-frequency switch module includes a switch IC, a phase adjustment circuit, and a filter circuit. The phase adjustment circuit, which includes an inductor and capacitors, includes a ?-type circuit in which the inductor is connected in series between an individual terminal and the filter circuit. The filter circuit is an LC parallel resonant circuit including a filter inductor and a filter capacitor. A distortion second harmonic signal from the individual terminal of the switch IC is reflected by the filter circuit through the phase adjustment circuit and returns to the switch IC through the phase adjustment circuit. This distortion second harmonic signal, whose phase is adjusted by the phase adjustment circuit, is cancelled out by a distortion second harmonic signal output to a common terminal of the switch IC.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: May 30, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Takanori Uejima
  • Patent number: 9614574
    Abstract: An apparatus comprises a transmit network to transmit an input from a first amplifier to an antenna, a receive network to provide an input from an antenna to a second amplifier, a first switch to selectively decouple the transmit network from the antenna, and a second switch to selectively decouple the receive network from the antenna. Other embodiments may be described.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: April 4, 2017
    Assignee: Intel Corporation
    Inventors: Tzvi Maimon, Ofir Degani
  • Patent number: 9595986
    Abstract: A method is provided for extending dynamic range of a receiver. The method includes receiving a known input signal at the receiver, detecting a first output signal in response to the known input signal, and determining a correction function based on the first output signal and the known input signal for compensating for non-linear distortion introduced by the receiver. The method further includes receiving an unknown input signal at the receiver, detecting a second output signal in response to the unknown input signal, and applying the correction function to the second output signal in a time domain to recover the unknown input signal.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: March 14, 2017
    Assignee: Keysight Technologies, Inc.
    Inventor: Joel P. Dunsmore
  • Patent number: 9538658
    Abstract: A compact transition structure includes a printed circuit board, wherein there is a rectangular region on one side of the printed circuit board and the rectangular region has a pair of long edges and a pair of short edges; a transition probe on the one side of the printed circuit board, wherein the transition probe extends into the rectangular region through a long edge of the rectangular region and has a terminal near a center of the rectangular region; and a coupler probe on the one side the printed circuit board, wherein the coupler probe extends into the rectangular region through a short edge of the rectangular region and has a terminal before the center of the rectangular region such that the coupler probe is electrically insulated from the transition probe.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: January 3, 2017
    Assignee: ZTE (USA) INC.
    Inventors: Ying Shen, Peng Gao
  • Patent number: 9535140
    Abstract: In accordance with an embodiment, a circuit includes a magnetic transformer having a first winding coupled between a first signal node and a second signal node, and a second winding coupled between a first reference node and a current measurement node. A phase shift network is coupled between the second node and a voltage measurement node, and the circuit is configured to indicate an impedance matching condition based on an amplitude difference and a phase difference between the voltage measurement node and the current measurement node.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: January 3, 2017
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Valentyn Solomko, Winfried Bakalski
  • Patent number: 9515645
    Abstract: In accordance with an embodiment, a circuit includes a plurality of switching networks coupled between a corresponding plurality of RF ports and a common RF port, and a control circuit. Each of the plurality of switching networks includes a first switch coupled between its corresponding RF port and the common RF port, and at least one of the plurality of switching networks includes a selectable network coupled between the first switch and the common RF port, such that the selectable network provides a DC path in a first state and a series capacitance in a second state.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: December 6, 2016
    Assignee: Infineon Technologies AG
    Inventors: Winfried Bakalski, Nikolay Ilkov
  • Patent number: 9461621
    Abstract: A first filter channel with superior attenuation characteristics for transmission signals and is less susceptible to influence of transmission signals inputted to a transmission SAW filter device, is disposed closer to a transmission terminal, whereas a second filter channel with poor attenuation characteristics in a transmission band and is more susceptible to the influence of transmission signals inputted to the transmission SAW filter device, is disposed farther from a transmission terminal to improve isolation characteristics in a differential mode of a duplexer.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: October 4, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Syuji Yamato
  • Patent number: 9350059
    Abstract: Circuits and methods related to a switch having extended termination bandwidth are disclosed. A switch having an input end and an output end, and capable of being in an ON state and an OFF state, can include a termination circuit configured to yield an extended frequency bandwidth in which a desired OFF state termination impedance is provided. A termination circuit may include two or more electrically parallel resistor-capacitor branches coupled to the switch input or output end. A switch termination circuit may provide an OFF state termination impedance that is substantially equal to the switch ON state termination impedance. Also, a termination circuit may enable a desired termination impedance without sacrificing other switch performance features, including insertion loss, isolation, or VSWR difference between ON and OFF states. Also disclosed are examples of how the foregoing features can be implemented in different products and methods of fabrication.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: May 24, 2016
    Assignee: Skyworks Solutions, Inc.
    Inventor: Jacob K. Easter
  • Patent number: 9331570
    Abstract: A switching circuit may include a first series diode, a second series diode, a first shunt diode coupled to the first series diode at a first control node, and a second shunt diode coupled to the second series diode at a second control node. A high voltage supply may generate a high voltage signal to be selectively applied to either the first or second control node. A dc-dc converter may cooperate with the high voltage supply to generate an intermediate bias voltage on the first and second shunt diodes so that the first series diode is reversed biased and the first shunt diode is forward biased when the high voltage control signal is applied to the first control node, and so that the second series diode is reversed biased and the second shunt diode is forward biased when the high voltage control signal is applied to the second control node.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: May 3, 2016
    Assignee: HARRIS CORPORATION
    Inventors: John Robert McIntyre, John Paul Shoots, Gary Anton Schwenck
  • Patent number: 9312820
    Abstract: A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more sub-amplifiers having high and low power circuits and whose outputs are combined to yield the total desired power gain. An integrated multi-tap transformer having primary and secondary windings arranged in a novel configuration provide efficient power combining and transfer to the antenna of the power generated by the individual sub-amplifiers.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: April 12, 2016
    Assignee: DSP GROUP LTD.
    Inventors: Alexander Mostov, Yaron Hasson, Ron Pongratz, Sharon Betzalel
  • Patent number: 9253786
    Abstract: A method in a second network node (13,23) (eNodeB,BTS) for transmitting signals to and receiving signals from a user equipment (10) in a cellular radio system. The second network node (2nd eNodeB, BTS) signals (sends, transmits) an indicator to a first network node, i.e. RNC or first EnodeB or BTS (12,22, 15) in the cellular radio system, which indicator indicates an impact of an intermodulation (passive intermodulation, PIM, product) caused by a transmission from a transmitter in the second network node (second eNodeB or BTS) (13,23) on a receiver in the second network node (second EnodeB or BTS) (13,23).
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: February 2, 2016
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Muhammad Kazmi, Farshid Ghasemzadeh
  • Patent number: 9190712
    Abstract: An electronic device antenna may be provided with an antenna ground. An antenna resonating element may have a first end that is coupled to the ground using an inductor and may have a second end that is coupled to a peripheral conductive housing member in an electronic device. The peripheral conductive housing member may have a portion that is connected to the ground and may have a portion that is separated from the ground by a gap. The gap may be bridged by an inductor that couples the second end of the antenna resonating element to the antenna ground. The inductor may be bridged by a switch. A tunable circuit such as a capacitor bridged by a switch may be interposed in the antenna resonating element. The switches that bridge the gap and the capacitor may be used in tuning the antenna.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: November 17, 2015
    Assignee: Apple Inc.
    Inventors: Hongfei Hu, Mattia Pascolini, Robert W. Schlub, Matthew A. Mow, Nanbo Jin
  • Patent number: 9165735
    Abstract: A high reliability, high voltage electronically controllable switch is created from a combination of relays of different types, with different characteristics, such as an electromechanical relay and an optoelectronic relay. The relays are closed and/or opened in accordance with a sequence that avoids actuating an electromechanical relay of such a compound switch to close or open under conditions that degrade the operating life of the electromechanical relay, even if the compound switch is hot switched under high voltage conditions. The switching sequence ends with the relays in a state that provides low on resistance, low crosstalk, low capacitance and/or low leakage. The switch can be relatively compact, enabling construction of an instrument serving as a switch matrix for an automatic test system.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: October 20, 2015
    Assignee: Teradyne, Inc.
    Inventors: James J. Sanders, III, Eric P. Bergeron
  • Patent number: 9143125
    Abstract: Circuits and methods related to a switch having extended termination bandwidth are disclosed. A switch having an input end and an output end, and capable of being in an ON state and an OFF state, can include a termination circuit configured to yield an extended frequency bandwidth in which a desired OFF state termination impedance is provided. A termination circuit may include two or more electrically parallel resistor-capacitor branches coupled to the switch input or output end. A switch termination circuit may provide an OFF state termination impedance that is substantially equal to the switch ON state termination impedance. Also, a termination circuit may enable a desired termination impedance without sacrificing other switch performance features, including insertion loss, isolation, or VSWR difference between ON and OFF states. Also disclosed are examples of how the foregoing features can be implemented in different products and methods of fabrication.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: September 22, 2015
    Assignee: Skyworks Solutions, Inc.
    Inventor: Jacob K. Easter
  • Patent number: 9077397
    Abstract: The invention relates to a transceiver operating in a wireless communication network, the transceiver comprising an RF circuit and a selection mechanism for selecting an antenna for communication. The switching mechanism includes one or more electro-mechanical switches and one or more solid-state switches, each being selectable for operation in response to a control signal received from the control system. The solid-state switches are configured to establish an electrical connection between the RF circuit and an antenna if a first condition is satisfied, and are further configured to select an antenna from a plurality of antennas that can be selected by the solid-state switches based on an outcome of a second condition such that the selected antenna is used for communication. If the first condition is not satisfied, the electro-mechanical switches are configured to establish an electrical connection between the RF circuit and an antenna such that this antenna is used for communication by the transceiver.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: July 7, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Josep Soler Garrido
  • Patent number: 9070565
    Abstract: A power transistor circuit uses first and second power transistors in differential mode. An inductor arrangement of inductors is formed by wire bonds between the drains. The transistors are in a mirrored configuration, and the inductor arrangement comprises wire bonds which extend between the drain connections across the space between the mirrored transistors.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: June 30, 2015
    Assignee: NXP, B.V.
    Inventor: Gerard Jean-Louis Bouisse
  • Publication number: 20150145614
    Abstract: Disclosed are systems, circuits and methods related to low-loss bypass of a radio-frequency (RF) filter or diplexer. In some embodiments, a switching network circuitry can include a first switch that has an input pole configured to receive a radio-frequency (RF) signal, a pass-through throw configured to be connectable to the input pole to allow routing of the RF signal to an RF component, and at least one dedicated bypass throw configured to be connectable to the input pole and at least one bypass conduction path. The switching network circuitry can further include a second switch that has a pole and a throw, and is connectable between an output of the RF component and the bypass conduction path. Use of the dedicated bypass throw(s) in the first switch allows implementation of low-loss bypass of the filter or diplexer.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Inventors: David Scott WHITEFIELD, David Ryan STORY, Nuttapong SRIRATTANA, Darryl Earl EVANS
  • Patent number: 9035716
    Abstract: There is provided a high frequency switch having a reduced circuit scale while maintaining satisfactory harmonic characteristics in a transfer path of a high frequency signal. The high frequency switch includes: at least one transmission port; at least one reception port; a common port; transmission side series switches each including a body contact type FET; transmission side shunt switches each including a body contact type FET; reception side series switches each including a body contact type FET; and reception side shunt switches each including at least one floating body type FET.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Koki Tanji, Tsuyoshi Sugiura
  • Publication number: 20150130556
    Abstract: According to a first aspect embodiments provide a transistor including at least one gate region between at least one drain region and at least one source region, wherein a ratio between a width of the gate region and a length of the gate region exceeds 300.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 14, 2015
    Applicant: Infineon Technologies AG
    Inventor: Winfried Bakalski
  • Publication number: 20150130557
    Abstract: A switch architecture having open reflective unselected ports. Signals can be selectively coupled between a common port and at least one selectable port through series connected switches. When one or more port is selected, the remaining ports are opened. In addition, associated “shuntable” switches from each of the selectable ports to ground are always open, regardless of the ON or OFF state of the series switches; thus, there is no normally active connection of the selectable ports to ground, but the presence of the shuntable switches provides electrostatic discharge protection for all ports. Embodiments of the invention allow configurability between a traditional architecture and an open reflective unselected port architecture, and include integrated circuit and field effect transistor embodiments.
    Type: Application
    Filed: September 30, 2014
    Publication date: May 14, 2015
    Inventors: Tero Tapio Ranta, Chih-Chieh Cheng
  • Patent number: 9031517
    Abstract: The present invention discloses a transmit-receive (TR) front end. The TR front end includes a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a voltage swing and a power transmission of the PA; and a TR switch, coupled between the transformer and the LNA. The LNA is single ended and there is no transformer between the LNA and the TR switch.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: May 12, 2015
    Assignee: Mediatek
    Inventors: Albert Chia-Wen Jerng, Wen-Kai Li, Chien-Cheng Lin
  • Patent number: 9014654
    Abstract: A semiconductor apparatus includes multiple field effect transistors provided between an antenna terminal to be connected to an antenna and multiple external terminals through which RF signals are capable of being supplied and a voltage generating circuit. When the field effect transistors provided between one of the multiple external terminals and the antenna terminal are turned off, the voltage generating unit charges a capacitor via a resistor circuit by switching the polarity of the RF signal to be supplied to the other external terminal with respect to the control signal and outputs a voltage based on a sum of the charge voltage and the voltage of the control signal as the gate drive voltage. The resistor circuit includes a first resistor including positive temperature characteristics and a second resistor including negative temperature characteristics.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: April 21, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tsutomu Kobori, Shigeki Koya, Akishige Nakajima, Yasushi Shigeno
  • Patent number: 9013221
    Abstract: A receiver circuit for a differential input signal, may include a divider bridge having first and second ends, a midpoint therebetween, and intermediate points on either side of the midpoint. The divider bridge is coupled to receive the differential input signal at the first and second ends. A current generator is coupled to the divider bridge and configured to generate compensation currents associated respectively with components of the differential input signal. The divider bridge is configured to receive the compensation currents respectively at the intermediate points, and generate a compensated differential signal between the intermediate points.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: April 21, 2015
    Assignee: STMicroelectronics (Grenoble 2) SAS
    Inventors: Thierry Masson, Sandrine Nicolas, Colette Morche