Single Antenna Switched Between Transmitter And Receiver Patents (Class 455/83)
  • Patent number: 10878207
    Abstract: A method includes providing a power supply package (PSP) that includes a power supply, an RFID tag, and a power switch, where a control terminal of the power switch is coupled to an output terminal of the RFID tag, and load path terminals of the power switch are coupled between an output terminal of the PSP and a first terminal of the power supply, where a control register of the RFID tag is pre-programmed with a first value such that the RFID tag is configured to generate a first control signal that turns off the power switch; receiving, by the RFID tag, a second value for the control register of the RFID tag; and writing, by the RFID tag, the second value to the control register of the RFID tag such that the RFID tag is configured to generate a second control signal that turns on the power switch.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: December 29, 2020
    Assignee: STMicroelectronics, Inc.
    Inventor: John N. Tran
  • Patent number: 10749501
    Abstract: An apparatus comprises a first RF port, a second RF port, a first resonator circuit and at least one second resonator circuit. The first resonator circuit and the second resonator circuit may be connected between the first RF port and the second RF port. The first resonator circuit may comprise a first inductor, a first capacitor, and a first stacked switch device. The second resonator circuit may comprise a second inductor, a second capacitor, and a second stacked switch device. The first capacitor and the first stacked switch device may be coupled in series across the first inductor. The second capacitor, the second inductor, and the second stacked switch device may be connected in parallel.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: August 18, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Hojung Ju, Roberto Aparicio Joo
  • Patent number: 10735044
    Abstract: An integrated front-end module (FEM) includes at least one power amplifier (PA) coupled to an antenna without inclusion of a switching element in a transmit signal path in the FEM between an output of the PA and the antenna. The FEM further includes at least one low-noise amplifier (LNA) and a switching circuit coupled in a receive signal path of the FEM between the antenna and an input of the LNA. The switching circuit is configured in a first mode to disable the PA and to connect the input of the LNA to the antenna for receiving signals from the antenna. The switching circuit is configured in a second mode to disconnect the input of the LNA from the antenna and to enable the PA for transmitting signals to the antenna.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: August 4, 2020
    Assignee: COOLSTAR TECHNOLOGY, INC.
    Inventor: Shuming Xu
  • Patent number: 10727810
    Abstract: A filter (10) includes a series arm circuit (11) and a parallel arm circuit (12). The parallel arm circuit (12) includes a parallel arm resonator (p1), a variable frequency circuit (12T), and a parallel arm resonator (p2) connected in parallel with a circuit in which the parallel arm resonator (p1) and the variable frequency circuit (12T) are connected in series. The variable frequency circuit (12T) includes a parallel arm resonator (p3) and a switch (SW) connected in parallel with the parallel arm resonator (p3), and is configured to change frequencies of a pass band and a frequency of an attenuation pole by switching between an on state and off state of the switch (SW). A resonant frequency and anti-resonant frequency of the parallel arm resonator (p1) are respectively different from a resonant frequency and anti-resonant frequency of the parallel arm resonator (p2).
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: July 28, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Koji Nosaka
  • Patent number: 10693231
    Abstract: A transmit/receive switching circuit implementation reduces transmitting/receiving switching losses in a transceiver during different modes of operation. The implementation includes connecting a low noise amplifier and a power amplifier in accordance with a shunt configuration in the transceiver. The implementation also includes disabling the power amplifier to achieve a high impedance state by grounding an output stage bias and enabling the low noise amplifier and disabling one or more transistors connected to a path between the low noise amplifier and the power amplifier during a receive mode.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: June 23, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jeremy Dunworth, Aliakbar Homayoun, Andrzej Partyka
  • Patent number: 10657338
    Abstract: The present invention relates to a microwave sensing device that uses antennas in the form of a 2×1 array with two radiators driven out of phase via a 180 degree power splitter for measuring a radio-frequency signal propagating through a mammalian specimen to obtain an integral estimate of bone density.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: May 19, 2020
    Inventors: Sergey N Makarov, Gregory M Noetscher, Viktor S Makarov, Ara Nazarian
  • Patent number: 10630282
    Abstract: Disclosed herein are switching or other active FET configurations that implement a main-auxiliary branch design. Such designs include a circuit assembly for performing a switching function that includes a branch including a main path in parallel with a first auxiliary path and the main path in series with a second auxiliary path. The circuit assembly also includes a first gate bias network connected to the main path. The circuit assembly also includes a second gate bias network connected to the first auxiliary path. The circuit assembly also includes a third gate bias network connected to the second auxiliary path, the second gate bias network and the third gate bias network configured to improve linearity of the switching function.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: April 21, 2020
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Hailing Wang, Dylan Charles Bartle, Hanching Fuh, Jerod F. Mason, David Scott Whitefield, Paul T. DiCarlo
  • Patent number: 10622985
    Abstract: The present application provides a square wave generating method, applied in a square wave generating circuit, configured to generate a mimetic square wave signal, wherein the square wave generating circuit has a breakdown voltage. The square wave generating method comprises the square wave generating circuit generating the mimetic square wave signal as a first voltage during a first time interval; the square wave generating circuit generating the mimetic square wave signal as a second voltage during a second time interval; and the square wave generating circuit generating the mimetic square wave signal as a transient voltage during a transient interval between the first time interval and the second time interval, wherein the transient voltage is between the first voltage and the second voltage; wherein a first voltage difference between the first voltage and the second voltage is greater than the breakdown voltage.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: April 14, 2020
    Assignee: Shenzhen Goodix Technology Co., Ltd.
    Inventors: Fu-Chiang Yang, Meng-Ta Yang
  • Patent number: 10615777
    Abstract: Balun circuitry with a transceiver loop, a first antenna loop, and a second antenna loop is disclosed. The first antenna loop, the second antenna loop, and the transceiver loop are coaxially positioned such that the first antenna loop and the second antenna loop are coupled in opposite phase to the transceiver loop. In at least one exemplary embodiment, a semiconductor substrate has a layer that includes the first antenna loop, the second antenna loop, and the transceiver loop.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: April 7, 2020
    Assignee: Qorvo International PTE. LTD.
    Inventor: Hendrik Arend Visser
  • Patent number: 10554243
    Abstract: A multiway switch, a radio frequency system, and a wireless communication device include four throw (T) ports and four pole (P) ports, and the four T ports include one first T port coupled with all of the four P ports. The multiway switch is configured to be coupled with a radio frequency circuit and an antenna system of an electronic device operable in a dual-frequency single-transmit mode, to enable a preset function of the electronic device, the antenna system includes four antennas corresponding to the four P ports, and the preset function is a function of transmitting a sounding reference signal (SRS) through the four antennas in turn.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: February 4, 2020
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Jian Bai
  • Patent number: 10547120
    Abstract: An apparatus includes a package and a chip. The package may comprise (i) a plurality of bonding pads, (ii) a plurality of combiner/splitter circuits, and (iii) a plurality of bumps. The bonding pads may be configured to electrically connect the package with a printed circuit board substrate. The combiner/splitter circuits generally connect each of the bonding pads to two respective bumps of the plurality of bumps. The chip is generally disposed in the package. The chip may comprise a plurality of contact pads and a plurality of transceiver channels. Each of the transceiver channels may comprise a radio-frequency input and a radio-frequency output. The radio-frequency input and the radio-frequency output of each transceiver channel are generally connected to respective contact pads of the chip. The respective contact pads of each transceiver channel are generally coupled to a respective bonding pad of the package via the two respective bumps.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: January 28, 2020
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Samet Zihir, Tumay Kanar
  • Patent number: 10454175
    Abstract: A transceiver device and associated antenna are disclosed. In one aspect, the transceiver device combines first and second transceiver modules with a transceiver capability including a substantially planar radiating element and including a central point. Each transceiver module is a transceiver module coupled with the transceiver capability so as to excite a pair of excitation points of the radiating element, the excitation points of one pair being arranged symmetrically relative to the central point of the radiating element. The first and second transceiver modules respectively excite a first pair of excitation points arranged in a first direction of the radiating element and a second pair of excitation points arranged in a second direction of the radiating element, the first and second directions being mutually orthogonal.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: October 22, 2019
    Assignee: Thales
    Inventors: Vincent Petit, Bruno Louis, Christian Renard, Laurent Fedorowicz
  • Patent number: 10418719
    Abstract: An apparatus include a package, a chip and a plurality of bumps. The package may include (i) a plurality of bonding pads configured to exchange a plurality of radio-frequency signals with an antenna panel and (ii) a plurality of transmission lines configured to exchange the radio-frequency signals with the bonding pads. Two of the transmission lines may be connected to each of the bonding pads. The chip may be disposed in the package and may include (i) a plurality of transceiver channels configured to exchange the radio-frequency signals with the transmission lines and (ii) a plurality of switches configured to switch the radio-frequency signals to a signal ground. The bumps may be configured to exchange the radio-frequency signals between the transmission lines of the package and the transceiver channels of the chip. The transmission lines, the bumps and the switches may form a plurality of transmit/receive switches.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: September 17, 2019
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Samet Zihir, Tumay Kanar
  • Patent number: 10387691
    Abstract: A polar transmitter for an RFID reader and a system using the polar transmitter are disclosed. An RFID system according to at least some embodiments of the invention includes a polar transmitter employing a switch mode power amplifier. The system can also include a receiver to receive responses from RFID tags and a coupler connected to the polar transmitter, the receiver and one or more antennas. In at least some embodiments, the polar transmitter of the RFID system includes an envelope amplifier connected to the switch mode power amplifier to provide an envelope signal and a phase modulator connected to the switch mode power amplifier to phase modulate the switch mode power amplifier using a phase signal. In at least some embodiments, the polar transmitter of the RFID system transmits OPR-ASK signals to reduce AM modulation depth and provide a continuous phase signal for the phase modulator.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: August 20, 2019
    Assignee: Clairvoyant Technology LLC
    Inventor: Thomas J. Frederick
  • Patent number: 10348356
    Abstract: A transceiver suitable for frequency division duplex (FDD) communication is disclosed. In one exemplary embodiment, a transmitter leakage reduction circuit for a transceiver is described. The transmitter leakage reduction circuit comprises an auxiliary power amplifier, first and second filters, and a signal transmission arrangement. The auxiliary power amplifier is configured to provide an auxiliary power amplifier output signal that represents an output signal of a power amplifier of the transmitter with a controllable phase shift or gain output. The first and second filters are configured to attenuate any signals in the receive frequency band of the respective power amplifier output signal and auxiliary power amplifier output signal. The signal transmission arrangement is configured to suppress a contribution of the power amplifier output signal from a signal received from an RF connecting point using the auxiliary power amplifier output signal to obtain a received signal that is input to the receiver.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: July 9, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Andersson, Imad ud Din, Daniel Eckerbert, Henrik Sjöland, Johan Wernehag
  • Patent number: 10291283
    Abstract: Embodiments of the invention include a tunable radio frequency (RF) communication module that includes a transmitting component having at least one tunable component and a receiving component having at least one tunable component. The tunable RF communication module includes at least one piezoelectric switching device coupled to at least one of the transmitting and receiving components. The at least one piezoelectric switching device is formed within an organic substrate having organic material and is designed to tune at least one tunable component of the tunable RF communication module.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: May 14, 2019
    Assignee: Intel Corporation
    Inventors: Telesphor Kamgaing, Feras Eid, Adel A. Elsherbini, Georgios C. Dogiamis, Vijay K. Nair, Johanna M. Swan, Valluri R. Rao
  • Patent number: 10270485
    Abstract: A switch module includes a switch circuit and a filter. The switch circuit includes two or more selection terminals, a common terminal provided for the two or more selection terminals, and first and second bypass terminals. The filter is connected between the first and second bypass terminals and reduces harmonics of a radio-frequency signal which passes through the filter. The switch circuit is selectively switched between a first connection mode and a second connection mode. In the first connection mode, the common terminal is connected to any of the two or more selection terminals. In the second connection mode, the common terminal is connected to the first bypass terminal and the second bypass terminal is connected to any of the two or more selection terminals.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: April 23, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yukiteru Sugaya
  • Patent number: 10256532
    Abstract: An apparatus, a method, and a computer program for a vehicle having at least one interior antenna and at least one exterior antenna. The apparatus includes a transceiver module for communication via a frequency band and a control module to control the transceiver module. The control module provides signal processing for the transceiver module for signals from the at least one interior antenna and the at least one exterior antenna based on a combination of the signals from the at least one interior antenna and the at least one exterior antenna.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: April 9, 2019
    Assignee: Volkswagen AG
    Inventor: Matthias Mohaupt
  • Patent number: 10230423
    Abstract: System and method embodiments are provided for implementing balanced passive cancellation of self-interference (SI) for full-duplex (FD) communications. In an embodiment, a transceiver circuit for FD communications comprises an antenna comprising a first port and a second port, a transmitter, and a power divider coupled to the transmitter and comprising a first output and a second output. The transceiver circuit further comprises a receiver, a power combiner coupled to the receiver and comprising a first input and a second input, and a first circulator coupled to the first output of the power divider, the first port of the antenna, and the first input of the power combiner. The transceiver circuit also comprises a second circulator coupled to the second output of the power divider, the second port of the antenna, and the second input of the power combiner.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: March 12, 2019
    Assignee: Huawei Technologies Canada Co., Ltd.
    Inventors: Tho Le-Ngoc, Thanh Ngon Tran
  • Patent number: 10116347
    Abstract: An integrated front-end module (FEM) includes at least one power amplifier (PA) coupled to an antenna without inclusion of a switching element in a transmit signal path in the FEM between an output of the PA and the antenna. The FEM further includes at least one low-noise amplifier (LNA) and a switching circuit coupled in a receive signal path of the FEM between the antenna and an input of the LNA. The switching circuit is configured in a first mode to disable the PA and to connect the input of the LNA to the antenna for receiving signals from the antenna. The switching circuit is configured in a second mode to disconnect the input of the LNA from the antenna and to enable the PA for transmitting signals to the antenna.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: October 30, 2018
    Assignee: Coolstar Technology, Inc.
    Inventor: Shuming Xu
  • Patent number: 10110259
    Abstract: A band selection switch apparatus includes: a first switch including a first series switch disposed between a transmission input terminal and a first transmission and reception terminal; a second switch including a second series switch disposed between the transmission input terminal and a first transmission terminal; and a third switch including a third series switch disposed between a first reception output terminal and the first transmission and reception terminal. The first series switch includes a first series switch circuit including first series switch elements connected between the transmission input terminal and a first intermediate node, a second series switch circuit including second series switch elements connected between the first intermediate node and the first transmission and reception terminal, and a first shunt switch circuit including first shunt switch elements connected between the first intermediate node and a ground.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 23, 2018
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Byeong Hak Jo, Jeong Hoon Kim, Hyun Paek, Young Wong Jang
  • Patent number: 9966987
    Abstract: The radio frequency switching system comprises an input/output terminal connectable to a radio frequency antenna, a receiving terminal, a transmission terminal, a group of diodes operatively interposed between the input/output terminal, the receiving terminal and the transmission terminal, at least a selection device between a receiving configuration, in which the input/output terminal is operatively connected to the receiving terminal, and a transmission configuration, wherein the input/output terminal is operatively connected to the transmission terminal, and a DC/DC voltage converter operatively connected to the group of diodes and able to generate a predetermined output voltage.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: May 8, 2018
    Assignee: Teko Telecom S.r.l.
    Inventors: Massimo Notargiacomo, Davide Durante
  • Patent number: 9947994
    Abstract: A plug-and-play antenna may be used with many different types of wireless communication devices. An antenna may be coupled to an impedance tuning component and a waveform generator. A calibration control module receives radio status information, controls the waveform generator to vary a response of the antenna, and tunes the impedance tuning component to match impedances between a radio and the antenna.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: April 17, 2018
    Assignees: INTEL CORPORATION, VIRGINA TECH INTELLECTUAL PROPERTIES, INC.
    Inventors: Seong-Youp Suh, Harry G. Skinner, W. Dawson Kesling, Majid Manteghi
  • Patent number: 9948269
    Abstract: A high-frequency module includes a wiring board, a first duplexer that separates a transmission signal and a reception signal in a first frequency band, and a second duplexer that separates a transmission signal and a reception signal in a second frequency band whose reception-side frequency band partially overlaps with a frequency band of a third-order harmonic of the first transmission signal. The first duplexer is disposed near a predetermined side on a first main surface of the wiring board, and the second duplexer is disposed near an opposite side opposing the predetermined side. An extended line extending from a first transmission terminal of the first duplexer and an extended line extending from a second reception terminal of the second duplexer are spaced away from each other.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: April 17, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Hiromichi Kitajima
  • Patent number: 9906260
    Abstract: Antenna systems that make use of an integrated proximity sensor or other sensor in order to implement a closed loop antenna selection system. In one embodiment, the antenna system is implemented within an exemplary portable wireless device and includes as its primary components for implementing the closed loop antenna selection system: a proximity sensor/microcontroller unit (MCU); a switching apparatus; a baseband front end module (FEM); and a number of antenna modules. The integrated proximity sensor/MCU detects the presence (influence) of a user's hand, or other loading by any other dielectric or metal component, through measurements that take place through the antenna modules and selects the appropriate RF path for transmission and/or reception by the mobile device. Methods of using and testing the aforementioned antenna systems are also disclosed.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: February 27, 2018
    Assignee: Pulse Finland Oy
    Inventors: Prasadh Ramachandran, Ilkka Heikura, Petteri Annamaa
  • Patent number: 9825599
    Abstract: A signal transmitting-receiving apparatus includes a first switching section, a second switching section, a controller, and an isolation unit. The first switching section is configured to connect Bluetooth signal receiving lines to a Bluetooth antenna. The second switching section configured to connect antennas to one of a Bluetooth receiving terminal, a Wi-Fi signal receiving terminal, and a Wi-Fi signal transmitting terminal. The controller is configured to signal process the Bluetooth signal and a Wi-Fi signal that are transmitted and received. The isolation unit is configured to suppress a signal coupling between the transmitted Bluetooth signal and the Bluetooth signal receiving lines.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: November 21, 2017
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Hong In Kim
  • Patent number: 9722819
    Abstract: A distortion compensation system includes a first communication node including a first reception unit including an equalizer configured by a first digital filter unit and a first transmission unit including an emphasis circuit configured by a second digital filter unit, and a second communication node including a second transmission unit transmitting a training pattern before receiving normal data from the first communication node. The equalizer converges a filter constant of the first digital filter unit so that an error of the received training pattern is converged. The first transmission unit performs a distortion compensation using the converged filter constant of the first digital filter unit as at least a part of a filter constant of the second digital filter unit of the emphasis circuit, and then transmits the data.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: August 1, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hironobu Akita, Shigeki Ohtsuka, Nobuaki Matsudaira, Takahisa Yoshimoto
  • Patent number: 9698740
    Abstract: Aspects of this disclosure relate to a mode linearization switch circuit that can adjust an effective impedance provided to an output of an amplifier. In an embodiment, an apparatus includes an amplifier configured to amplify a radio frequency (RF) signal and a mode linearization switch circuit electrically coupled to an output of the amplifier. The mode linearization switch circuit can include a capacitor, a switch in series with the capacitor, and a series LC circuit in parallel with the switch.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: July 4, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventors: Yu-Jui Lin, Andy Cheng Pang Wu, Peter Phu Tran
  • Patent number: 9692120
    Abstract: Disclosed are devices and methods related to a CMOS switch for radio-frequency (RF) applications. In some embodiments, the switch can be configured to include a resistive body-floating circuit to provide improved power handling capability. The switch can further include an electrostatic discharge (ESD) protection circuit disposed relative to the switch to provide ESD protection for the switch. Such a switch can be implemented for different switching applications in wireless devices such as cell phones, including band-selection switching and transmit/receive switching.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: June 27, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventor: Ying-Kuang Chen
  • Patent number: 9614575
    Abstract: A method and apparatus is disclosed to couple a transmission amplifier and a reception amplifier to a shared medium. An output of the transmission amplifier is directly coupled to an input of the reception amplifier to form a common connection. The transmission amplifier and the reception amplifier may receive a first amplifier bias via the common connection. In response to the first amplifier bias, the transmission amplifier provides a first communication signal to the shared medium and the reception amplifier does not provide a second communication signal from the shared medium. Alternatively, the transmission amplifier and the reception may receive a second amplifier bias via the common connection. In response to the second amplifier bias, the reception amplifier provides the second communication signal from the shared medium and the transmission amplifier does not provide the first communication signal to the shared medium.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: April 4, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Ramon Gomez, Giuseppe Cusmai, Jianhong Xiao, Takayuki Hayashi, Young Shin
  • Patent number: 9553614
    Abstract: Provided is a technique capable of improving isolation characteristics between a plurality of signal paths through which RF signals pass, without using ground electrodes or the like. Wiring electrodes 10a and 20a through which RF signals do not pass simultaneously are formed so as to be adjacent to each other in a central region of a component mounting surface 2a of a circuit board 2, and wiring electrodes 11a and 21a through which RF signals pass simultaneously are formed so as to be distanced from transmission paths 10 and 20. Accordingly, the RF signals do not simultaneously pass through the transmission paths 10 and 20, which are disposed near each other, and thus there is no risk that the RF signal passing through one of the signal paths will interfere with the RF signal passing through the other signal path.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: January 24, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro Hara, Masahiko Ura, Takahiro Watanabe
  • Patent number: 9490863
    Abstract: A switch is provided, the switch including one or more banks of transistors fabricated on a substrate, wherein body terminals of the transistors in each bank are configured to be individually controlled to have respective body voltages. The values of the body voltages are determined to provide optimum linearity of power transfer by changing properties of the substrate with respect to the properties of the substrate when the body voltages are commonly biased at a value.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: November 8, 2016
    Assignee: ETHERTRONICS, INC.
    Inventors: Alexandre Dupuy, Laurent Desclos
  • Patent number: 9374086
    Abstract: A method of electrically coupling a first node and a second node of a switch cell includes biasing the second node and a bias node of the switch cell at a direct current (DC) voltage level of a second voltage level greater than a first voltage level. A first switch unit coupled between the first node and the second node is tuned on by a first control signal having a third voltage level. The third voltage level being greater than the first voltage level, and a difference between the third voltage level and the first voltage level is about twice a difference between the second voltage level and the first voltage level. Also, a second switch unit coupled between the second node and the bias node is turned off by a second control signal having the first voltage level.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: June 21, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Jun-De Jin, Ming Hsien Tsai, Tzu-Jin Yeh
  • Patent number: 9374124
    Abstract: Apparatus and methods for radio frequency (RF) switches are provided herein. In certain implementations, an RF switching circuit includes an adaptive switch bias circuit that controls gate and/or channel voltages of one or more field effect transistor (FET) switches. Additionally, the adaptive switch bias circuit is powered by a power high supply voltage and a power low supply voltage, and can be used to selectively turn on or off the FET switches based on a state of one or more switch enable signals. The adaptive switch bias circuit adaptively biases that gate and/or channel voltages of the FET switches based on a voltage difference between the power high and power low supply voltages to provide switch biasing suitable for use with two or more different power supply voltage levels.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: June 21, 2016
    Assignee: ANALOG DEVICES GLOBAL
    Inventors: Turusan Kolcuoglu, Bilal Tarik Cavus, Yusuf Alperen Atesal
  • Patent number: 9312888
    Abstract: Techniques for supporting data transmission and reception on multiple bands for carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes first and second antenna interface circuits coupled to first and second antennas, respectively. The first antenna interface circuit includes a first transmit (TX) filter for a first band, which may be part of a first triplexer or duplexer. The first TX filter filters a first radio frequency (RF) signal prior to transmission via the first antenna. The second antenna interface circuit includes a second TX filter for a second band, which may be part of a second triplexer or duplexer. The second TX filter filters a second RF signal prior to transmission via the second antenna. The first and second RF signals may be transmitted simultaneously on the first and second bands for carrier aggregation.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: April 12, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Haim M Weissman, Rimon E Mansour, Christian Holenstein
  • Patent number: 9306613
    Abstract: In embodiments of variable antenna match linearity, a wireless device includes a first transceiver and a second transceiver, an antenna via which signals are received, and a linearity controller that varies a linearity of an antenna match circuit associated with the antenna. The linearity controller can determine whether a frequency of an intermodulated signal that includes transmissions from the first and second transceivers is within one of a respective receive band of the first transceiver or the second transceiver. The linearity controller can increase a linearity of the antenna match circuit to mitigate an amplitude of the intermodulated signal in the receive band.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: April 5, 2016
    Assignee: Google Technology Holdings LLC
    Inventors: Gregory R. Black, John P. Boos
  • Patent number: 9288420
    Abstract: The present invention provides a digital television signal reception system, comprising a chip having a low-noise amplifier and a master receiver, at least one slave receiver, and at least one local-oscillator leakage processing unit. The chip receives at least one digital input signal of television channel. The low-noise amplifier amplifies and sends the input signal of television channel to the master/slave receiver. The input signal of television channel is frequency-mixed by the master/slave receiver so as to output an output signal of second television channel and an output signal of second television channel. The local-oscillator leakage processing unit detects and removes local-oscillator leakage of the master receiver included in the output signal of second television channel, so as to avoid interference of the local leakage of master receiver on sensitivity of receiving the output signal of second television channel of slave receiver by the slave television.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: March 15, 2016
    Assignee: Airoha Technology Corp.
    Inventors: Heng-Chih Lin, Yu-Hua Liu
  • Patent number: 9246544
    Abstract: Discloses are a transmission line having variable characteristic impedance and a combiner configured to combine a plurality of filter by use of the transmission line. The transmission line in accordance with an embodiment of the present invention includes: a first filter junction being connected with a first RF filter and configured to obtain an output signal of the first RF filter; a second filter junction being connected with a second RF filter and configured to obtain an output signal of the second RF filter; a first variable impedance section in which a phase of the output signal of the first RF filter is matched with a preset phase; and a second variable impedance section in which a phase of the output signal of the second RF filter is matched with the preset phase.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: January 26, 2016
    Assignee: Innertron, Inc.
    Inventor: Kwang-Myoung Heo
  • Patent number: 9236663
    Abstract: An electronic device may include radio-frequency transceiver circuitry and antenna structures. The radio-frequency transceiver circuitry may transmit signals for the antenna structures that pass through electrical components such as switches. Harmonics of the transmitted signals may be generated as the signals pass through the electrical components. To reduce interference that might otherwise adversely affect sensitive receiver circuitry in the electronic device, adjustable filter circuitry may be interposed between the electrical components and the antenna structures. Control signals may adjust the adjustable circuitry in real time during operation of an electronic device to ensure that transmitted signals can pass through the adjustable filter circuitry while blocking the harmonic signals.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: January 12, 2016
    Assignee: Apple Inc.
    Inventors: Fraidun Akhi, Ge Liu
  • Patent number: 9203462
    Abstract: Systems and methods for removing interference from a received signal. A model of a leakage path from a transmit section to a receive section is used to assist in designing a set of iterative filters to remove interference. Modeling the leakage path allows generation of the first approximation of the transfer function of the leakage path traversed by the signals coupled from the transmit section to the receive section. The first approximation narrows down the universe of possible distortions that might occur due to the transfer function of the leakage path. Narrowing down the universe of possible solutions makes the complexity of the interference control section more manageable. An iterative LMS function is used to further refine the coefficients of the adaptive filters.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: December 1, 2015
    Assignee: ENTROPIC COMMUNICATIONS, LLC
    Inventors: Branislav Petrovic, Shachar Kons, Michail Tsatsanis
  • Patent number: 9172355
    Abstract: A transmission circuit includes a first path that connects a first terminal for inputting or outputting signals, and one of a pair of second terminals for outputting or inputting the signals; a second path that connects the first terminal and another one of the pair of second terminals; a first circuit including a first capacitor that is serially inserted in the first path, which is configured to perform single-differential conversion on signals transmitted through the first path, to perform impedance matching, and to supply a bias voltage; a second circuit including a first inductor that is serially inserted in the second path, which is configured to perform single-differential conversion on signals transmitted through the second path, to perform impedance matching, and to supply a bias voltage; and a switch that is connected between the two terminals of the pair of second terminals.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: October 27, 2015
    Assignees: FUJITSU LIMITED, FUJITSU SEMICONDUCTOR LIMITED
    Inventors: Hiroyuki Sato, Yoshihiko Matsuo
  • Patent number: 9148137
    Abstract: A transmit/receive switch circuit has a comprises a controllable transmit section and a controllable receive section, having an output and an input coupled to an RF transmit/receive terminal respectively. The transmit section comprises a first transistor having a main current channel coupled between an RF transmit signal input and the RF transmit/receive terminal. The receive section comprises a first transistor having a main current channel coupled between the RF transmit/receive terminal and a RF receive signal output and a second transistor having a main current channel coupled between the RF receive signal output and ground. A signal that is derived from an RF input signal at the RF transmit/receive terminal is rectified. The rectified signal is used to control a control electrode of the second transistor of the receive section to make this transistor increasingly conductive with increasing RF signal amplitude.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: September 29, 2015
    Assignee: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
    Inventor: Maurice van Wanum
  • Patent number: 9143184
    Abstract: A multiport radio frequency (RF) switch circuit is disclosed. The switch circuit includes a first transistor that is connected to a first port, a common antenna port, and a first enable line. The first transistor is selectively activatable in response to a first enable signal applied to the first enable line. There is also a second transistor connected to a second port, the common antenna port, and a second enable line. The second transistor is selectively activatable in response to a second enable signal applied to the second enable line. A first inductor connected to the first port and the second port compensates for parasitic capacitance between the first port and the second port from an inactive one of the transistors.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: September 22, 2015
    Assignee: RFAXIS, INC.
    Inventors: Oleksandr Gorbachov, Okjune Jeon, Taewon Jung
  • Patent number: 9136838
    Abstract: A dual pole dual through switch for switching between at least four states. The switch comprises four transistors such as N-channel Metal Oxide Semiconductor transistors, such that at each state at most one transistor is in “on” state, and the others are in “off” state. Each transistor has its own control circuit, which provides zero or negative voltage to the drain of the transistor, positive voltage to the source of the transistor, and control alternating voltage to the gate of the transistor. The switch can be used on-chip for devices. Such devices may include a base station or a handset of a cordless phone.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: September 15, 2015
    Assignee: DSP GROUP LTD.
    Inventors: Yaron Hasson, Alex Mostov
  • Patent number: 9130369
    Abstract: Systems, methods, and apparatus for overvoltage protection in a wireless power receiver are disclosed. One aspect of the disclosure is a wireless power receiver apparatus. The apparatus includes an antenna circuit configured to wirelessly receive power, from a transmitter, at a level sufficient to power or charge a load, wherein the antenna circuit is electrically connected to an overvoltage protection circuit that is electrically connected between the antenna circuit and the load. The apparatus also includes a matching circuit electrically connected to the antenna circuit and a switching element electrically connected to the matching circuit. At least one of the matching circuit or the switching element is configured to control an amount of the received power flowing into the overvoltage protection circuit.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: September 8, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Edward Kenneth Kallal, Pavel Monat, Ryan Tseng
  • Patent number: 9118395
    Abstract: A chip includes an RF switch arrangement that has a plurality of RF switches arranged jointly on the chip. Each of the RF switches has at least one first RF connection accessible from outside the chip and one second RF connection accessible from outside the chip. Furthermore, each of the RF switches is designed to activate, in response to a driving, at least one RF path between two of its RF connections. The RF connections of different switches from among the RF switches are separated from one another in terms of radio frequency.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: August 25, 2015
    Assignee: Infineon Technologies AG
    Inventor: Winfried Bakalski
  • Patent number: 9113928
    Abstract: The present invention provides surgical apparatus for liposuction in which microwave energy is delivered from a probe into a treatment region to perform a fat liquefying function or a haemostasis function. The apparatus is arranged such that an output microwave field automatically adopts a configuration suitable for the fat liquefying function or haemostasis function depending on the type of tissue encountered by the probe in the treatment region. In particular, by suitable selection of the frequency of the microwave energy, the difference in skin depth of the microwave energy in fat and blood may enable the microwave field to automatically switch its configuration between one suitable for fat liquefying and one suitable for haemostasis without any change required to the amount of microwave power or the energy profile delivered to the probe.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: August 25, 2015
    Assignee: CREO MEDICAL LIMITED
    Inventor: Christopher Paul Hancock
  • Patent number: 9100060
    Abstract: In accordance with an embodiment, a filter network is configured to be coupled to a first switch, a second switch, and an output port. The filter network includes a first filter coupled between the first switch and the output port, and the second filter coupled between the second switch and the output port. The first filter has a pass band having a first frequency range that includes a first frequency, and a stop band that includes a second frequency that is a distortion product of the first frequency. The second filter has a second frequency range that includes the second frequency and the stop band that includes the first frequency. The second frequency range is higher in frequency than the first frequency range.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: August 4, 2015
    Assignee: Infineon Technologies AG
    Inventor: Nikolay Ilkov
  • Publication number: 20150147981
    Abstract: Radio-frequency (RF) switch circuits are disclosed providing improved switching performance. An RF switch system includes at least one field-effect transistor (FET) disposed between a first node and a second node, each having a respective source, drain, gate, and body. The system includes a coupling circuit including a first path and a second path, the first path being between the respective source or the respective drain and the respective gate of the at least one FET, the second path being between the respective source or the respective drain and the respective body of the at least one FET. The coupling circuit may be configured to allow discharge of interface charge from either or both of the coupled gate and body.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Inventors: Anuj Madan, Fikret Altunkilic, Guillaume Alexandre Blin
  • Patent number: 9042844
    Abstract: A transceiver includes: a power amplifying circuit arranged to generate differential output signals during a transmitting mode of the transceiver; a balance-unbalance circuit arranged to convert the differential output signals into a single-ended output signal; a switchable matching circuit arranged to receive the single-ended output signal on a signal port of the transceiver during the transmitting mode, and to convert a single-ended receiving signal on the signal port into a single-ended input signal during a receiving mode of the transceiver; and a low-noise amplifying circuit arranged to convert the single-ended input signal into a low-noise input signal during the receiving mode. The power amplifying circuit, the Balun, the switchable matching circuit, and the low-noise amplifying circuit are configured as a single chip.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: May 26, 2015
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Ti-Ku Yu, Sang Won Son, Chia-Hsin Wu, Tsung-Ming Chen, Wei-Chia Chan