Single Antenna Switched Between Transmitter And Receiver Patents (Class 455/83)
  • Patent number: 8989678
    Abstract: The transceiver has a transmitter, a receiver, and a three-port network. The transmitter is configured to transmit an outgoing RF signal. The receiver is configured to receive an incoming RF signal. The three-port network includes: a transmission line, configured to have a line length less than a quarter of a wavelength of the incoming RF signal; an antenna port, configured to connect to an antenna; a receiver port, configured to connect the receiver to the antenna port; and a transmitter port, configured to connect the transmitter to the antenna port and the receiver port through the transmission line.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: March 24, 2015
    Assignee: Mediatek Inc.
    Inventors: Sean Timothy Nicolson, Jing-Hong Conan Zhan
  • Patent number: 8989655
    Abstract: A method in which user equipment transmits a signal in a distributed antenna system in which a plurality of antennas is distributed in a cell, comprises the following steps: receiving uplink antenna information from a base station; controlling uplink power on the basis of the uplink antenna information; and transmitting an uplink signal on the basis of the uplink power control, wherein the uplink antenna information indicates a receiving antenna of the base station that receives the uplink signal.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 24, 2015
    Assignee: LG Electronics Inc.
    Inventors: Ji Won Kang, Jin Young Chun, Su Nam Kim, Bin Chul Ihm, Sung Ho Park
  • Patent number: 8971827
    Abstract: A module for an active antenna system for receiving and transmitting radio signals sealed in a housing. It comprises a power connector placed at the outside of the housing for supplying the module with supply power; at least one micro radio for receiving/sending digital radio signals having a digital down-converter/a digital up-converter and a control signal converter. The micro radio converts the digital radio signals to analog RF (radio frequency) signals and vice versa and is connected to the internal bus. At least one antenna element is connected to the micro radio and an internal data bus for the exchange of digital radio data and control data is connected to micro radio and hub. By placing two or more modules next to each other on a frame these modules form an active antenna system.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: March 3, 2015
    Assignee: Kathrein-Werke KG
    Inventor: Peter Kenington
  • Patent number: 8954019
    Abstract: A mobile wireless communications device may include an antenna, LTE RF differential inputs, and a front end circuit. The front end circuit may include band pass filters coupled to the antenna, LNAs coupled respectively to the band pass filters, and RF switching circuits. Each RF switching circuit may be respectively coupled between each LNA and a pair of LTE RF differential inputs and configured to switch to one or both of the pair of LTE RF differential inputs.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: February 10, 2015
    Assignee: BlackBerry Limited
    Inventors: Liviu George, Simon Andrew Hughes, Christopher Robert Little, Tajinder Manku
  • Patent number: 8948709
    Abstract: A transceiver includes a first circuit having a connector for connection to an antenna and receiving circuitry, and a second circuit having transmitting circuitry. The first and second circuits are coupled using a balun, where the balun is arranged so that its unbalanced side is in the first circuit and its balanced side is in the second circuit.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: February 3, 2015
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Terence Chi-Fung Kwok, Timothy Newton, Simon Chang
  • Patent number: 8948707
    Abstract: A transceiver module and duplexer within a communication device supports a minimized antenna volume and enhances a transfer gain for transmit and receive channels. The duplexer is communicatively coupled to one of multiple antenna and filter matching configurations which include a first configuration that couples receive and transmit filter matching circuits to a single antenna matching circuit. When the duplexer is coupled to the first configuration, receive and transmit filters of the duplexer are respectively coupled to the receive filter matching circuit and the transmit filter matching circuit. As a result, the antenna matching circuit and the filter matching circuits collectively provide the enhanced transfer gain.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: February 3, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Richard E. Mach, Gregory R. Black
  • Patent number: 8933845
    Abstract: A communication device as disclosed herein may include a body, an antenna assembly provided in the body, and configured to transmit or receive wireless signals, and a circuit board connected to the antenna assembly and configured to process the wireless signals. The antenna assembly may include a carrier having at least one region that is dimensioned to be farther away from the body than other portions thereof, and a radiator provided on the at least one dimensioned region of the carrier and configured to receive or radiate electromagnetic waves corresponding to the wireless signals. The radiator may be positioned on the dimensioned region of the carrier such that a specific absorption rate (SAR) due to the antenna assembly is reduced.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: January 13, 2015
    Assignee: LG Electronics Inc.
    Inventors: Changil Kim, Soyeon Lee, Yeomin Youn, Kyunghack Yi, Jin Lee
  • Patent number: 8923784
    Abstract: According to one embodiment, a semiconductor switch includes a power supply, a driver, a switch section, and a first potential controller. The power supply includes a first potential generator and a second potential generator. The first potential generator is configured to generate a negative first potential. The second potential generator is configured to generate a positive second potential that a power supply potential is stepped down. The driver is supplied with the first potential and a third potential and configured to output at least one of the first potential and the third potential based on a terminal switching signal. The switch section is configured to connect a common terminal to any one of a plurality of radio frequency terminals according to an output of the driver. The first potential controller includes a divider and an amplifier.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: December 30, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Toshiki Seshita
  • Patent number: 8923923
    Abstract: Embodiments of the present disclosure provide a multi-frequency band antenna feeder sharing method and a base station radio frequency unit. The method includes: receiving a signal of a frequency band 1 and a signal of a frequency band 2 through an antenna feeder, transmitting the signals to a band-pass filter and filtering the signals so as to obtain the signal of the frequency band 2, and transmitting the signal of the frequency band 2 to a third radio frequency port through a combiner port; and/or, sending the signal of the frequency band 2 to the combiner port through the third radio frequency port, transmitting the signal of the frequency band 2 that has passed through the band-pass filter to the port of the first radio frequency channel, and sending out the signal of the frequency band 2, together with the signal of the frequency band 1.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: December 30, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Liqun Xiong, Dong Zhao, Bin Li
  • Patent number: 8923783
    Abstract: Provided is a wireless communication device in which an antenna switch module is omitted. The wireless communication device includes a PA that amplifies a transmission signal, a transmission circuit that processes the amplified transmission signal, an antenna, and a control unit that alternately activates and deactivates the PA, the transmission circuit being configured to match an impedance between the transmission circuit and the antenna when the PA is activated, and to put an impedance as seen from the antenna toward the transmission circuit when the PA is deactivated in a high impedance state.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: December 30, 2014
    Assignee: Panasonic Corporation
    Inventor: Tetsuya Ashizuka
  • Patent number: 8918063
    Abstract: A system for transmitting/receiving a multi-band Radio Frequency (RF) signal using a Dual Input, Dual Output filter is provided. The system may include a Single-Input Single-Output (SISO) filter and the Dual Input, Dual Output filter. The system for transmitting/receiving a multi-band Radio Frequency (RF) may be implemented in a Radio Frequency (RF) region, which includes an area from an end of an antenna to an end of a mixer in a mobile communication.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: December 23, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In Sang Song, Duck Hwan Kim, Chul Soo Kim, Yun Kwon Park, Jea Shik Shin
  • Patent number: 8909171
    Abstract: The present invention relates to an RF antenna switch circuit, a high frequency antenna component, and a mobile communication device. According to the present invention, an RF antenna switch circuit including: an antenna; an input/output terminal including at least one transmitting terminal and at least one receiving terminal; at least one transmitting switch block disposed on a transmitting path(s) between the at least one transmitting terminal and a common node; at least one receiving switch block disposed on a receiving path(s) between the at least one receiving terminal and the common node; and a common switch block sharing a switching device and turned on by synchronizing with each of transmitting and receiving operations on transceiving the signal through the antenna is provided. When one of the transmitting and receiving operations is turned on, the other is turned off.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: December 9, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yu Sin Kim, Sung Hwan Park
  • Patent number: 8909161
    Abstract: A transceiver front-end for a communication device comprises a transmit frequency blocking arrangement and a receive frequency blocking arrangement. The transmit frequency blocking arrangement has a blocking frequency interval associated with the transmit frequency and a non-blocking frequency interval associated with the receive frequency, and is configured to block passage of transmit frequency signals between the signal transmission and reception arrangement and the receiver. The receive frequency blocking arrangement has a blocking frequency interval associated with the receive frequency and a non-blocking frequency interval associated with the transmit frequency, and is configured to block passage of receive frequency signals between the signal transmission and reception arrangement and the transmitter.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: December 9, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Imad ud Din, Stefan Andersson, Daniel Eckerbert, Henrik Sjöland, Tobias Tired, Johan Wernehag
  • Patent number: 8909167
    Abstract: A wireless communication device comprises a first antenna, a second antenna, a switch, and a balun. The first antenna and the second antenna transmit and receive signals. The wireless communication device can use only one antenna (the first antenna) or the two antennas (the first antenna and the second antenna) at the same time according to a comparison between received signal strength indications (RSSIs) of the antennas and a maximum input level of the wireless communication device.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: December 9, 2014
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Al-Ning Song, Guo-Hui Peng
  • Patent number: 8907680
    Abstract: A voltage detector for detecting a voltage generated in a second resonant coil that is disposed to face a first resonant coil and that performs at least one of electric power transmission and electric power reception to and from the first resonant coil in a contactless manner by means of electromagnetic resonance includes: a first high-impedance element having one end connected to one end of the second resonant coil; a second high-impedance element having one end connected to the other end of the second resonant coil; a low-impedance element connected between the other end of the first high-impedance element and the other end of the second high-impedance element and having an impedance smaller than each of those of the first and second high-impedance elements; and an output terminal for outputting a signal associated with a voltage applied across the low-impedance element.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: December 9, 2014
    Assignees: Nippon Soken, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Sakakibara, Shinji Ichikawa
  • Patent number: 8892057
    Abstract: A carrier aggregation radio system is provided. The carrier aggregation radio system includes a transceiver having a main receiver, a diversity receiver and a carrier aggregation receiver. The carrier aggregation radio system further includes a control system adapted to command a radio front end to route diversity signals from a diversity antenna to the main and diversity receivers in a first mode and to command the radio front end to route carrier aggregation signals from the diversity antenna to the carrier aggregation receiver in a second mode. The control system may also command a third mode in which diversity signals are routed to the main and diversity receivers while carrier aggregation signals are routed to the carrier aggregation receiver.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: November 18, 2014
    Assignee: RF Micro Devices, Inc.
    Inventor: Nadim Khlat
  • Publication number: 20140335800
    Abstract: A semiconductor device includes: a laminated body including a channel layer that is configured of a compound semiconductor; and at least one gate electrode that is provided on a top surface side of the laminated body, wherein the laminated body includes a first low-resistance region that is provided on the top surface side of the laminated body, the first low-resistance region facing the at least one gate electrode, and a second low-resistance region that is provided externally of the first low resistance region on the top surface side of the laminated body, the second low-resistance region being continuous with the first low-resistance region.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 13, 2014
    Applicant: Sony Corporation
    Inventors: Katsuhiko Takeuchi, Satoshi Taniguchi
  • Publication number: 20140335802
    Abstract: A radio frequency switch circuit with improved harmonic suppression and low insertion loss has an antenna port and a plurality of signal ports. A plurality of transistor switch circuits, are connected to a respective one of the plurality of signal ports and to the antenna port. Each of the transistor switch circuits has a transistor, which in an off state, together with a harmonic suppression capacitor and a parallel inductor both connected thereto, define a tank circuit that suppresses RF signals applied to the corresponding transistor switch circuit from a different one of the transistor switch circuits. The harmonic suppression capacitor is tuned to distribute large signal voltage swings in the RF signal amongst parasitic diodes of the transistor.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 13, 2014
    Applicant: RFAXIS, INC.
    Inventors: Huan ZHAO, Qiang LI
  • Publication number: 20140335801
    Abstract: RF switching circuitry includes an RF switch coupled between an input node and an output node. Distortion compensation circuitry is coupled in parallel with the RF switch between the input node and the output node. The RF switch is configured to selectively pass an RF signal from the input node to the output node based on a first switching control signal. The distortion compensation circuitry is configured to boost a portion of the RF signal that is being compressed by the RF switch when the amplitude of the RF signal is above a predetermined threshold by selectively injecting current into one of the input node or the output node. Boosting a portion of the RF signal that is being compressed by the RF switch allows a signal passing through the RF switch to remain substantially linear, thereby improving the performance of the RF switching circuitry.
    Type: Application
    Filed: May 7, 2014
    Publication date: November 13, 2014
    Applicant: RF Micro Devices, Inc.
    Inventors: Eric K. Bolton, Daniel Charles Kerr, Marcus Granger-Jones
  • Patent number: 8886137
    Abstract: A frequency tunable transmit/receive (Tx/Rx) antenna switch uses a tuned PIN diode RF switch topology (e.g. shunt, series or series-shunt). Frequency tunability may be provided for either a transmit or a receive port (or both) that is tuned by a quarter-wavelength transmission line. The quarter-wavelength (?c/4) line establishes a passband centered about a center frequency fc. An electronically tunable LC tank circuit adds capacitance to the switch impedance to shift the center frequency fc to lower frequencies and progressively narrow the passband with the addition of more capacitance. Transceiver units provided with frequency tunable Tx/Rx antenna switches can, for example, be used in a Master/Slave network in which multiple units communicate with each other or in an autonomous network in which each of the multiple units operate independently.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: November 11, 2014
    Assignee: Raytheon Company
    Inventor: Saadya Mahmood
  • Patent number: 8886136
    Abstract: A two-pin transmit/receive switch design includes a switching component configured to selectively switch in elements for a transmit signal path and elements for a receive signal path. A capacitor in the transmit signal path may be switched out when receiving signals on the receive signal path. Being able to selectively switch out the capacitor allows the capacitor value to be selected for optimal operation during transmit mode. For example, insertion loss may be minimized. In addition, elements in the receive signal path may be optimized (e.g., impedance matching) without being affected by or affecting the optimization that was performed for the transmit signal path.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: November 11, 2014
    Assignee: Marvell International Ltd.
    Inventors: David M. Signoff, Yung Chen, Jinho Park, Li Lin
  • Patent number: 8879436
    Abstract: Provided is a multiband wireless apparatus that, even if the number of supported frequency bands increases, suppresses increase in the number of components, and completes cell search within a specified time. In a multiband wireless apparatus (1), a reception channel to which a current reception channel is going to be next switched is set in advance for one of a tunable duplexer (13) and a reception dedicated tunable filter (14) that is not connected to an antenna. An antenna switch (15), in a normal transmission/reception mode, connects the antenna to the tunable duplexer (13), and in a compressed mode, switches the connection of the antenna between the tunable duplexer (13) and the reception dedicated tunable filter (14).
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: November 4, 2014
    Assignee: Panasonic Corporation
    Inventor: Kaoru Ishida
  • Patent number: 8872600
    Abstract: The high frequency circuit module includes an RFIC configured to transmit and receive a high frequency signal, a power amplifier IC configured to amplify a transmission signal outputted from the RFIC, and a duplexers configured to separate the transmission signal outputted from the power amplifier IC and inputted to an antenna and a reception signal from the antenna and inputted to the RFIC from each other, in which at least one of the RFIC and power amplifier IC is embedded in the circuit substrate, and the duplexers are disposed between the RFIC and the power amplifier IC.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: October 28, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hiroshi Nakamura, Tomohiro Igarashi
  • Patent number: 8867591
    Abstract: A discrete digital transceiver includes a receiver sample and hold module, a discrete digital receiver conversion module, a transmitter sample and hold module, a discrete digital transmitter conversion module, clock generation module, and a processing module. The receiver sample and hold module samples and holds an inbound wireless signal in accordance with a receiver S&H clock signal. The discrete digital receiver conversion module converts the receiver frequency domain sample pulse train into an inbound baseband signal. The transmitter sample and hold module samples and holds an outbound signal to produce a transmitter frequency domain sample pulse train. The discrete digital transmitter conversion module converts a transmitter frequency domain sample pulse train into the outbound wireless signal. The clock generation module generates S&H clock signals in accordance with a control signal. The processing module generates the control signal such that the S&H clock signals are shifted.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: October 21, 2014
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Hooman Darabi
  • Patent number: 8868010
    Abstract: A synthetic-frequency RF transmitter is provided for transmitting an electromagnetic signal via an electrically short antenna. The transmitter comprises a reactive energy storage with an effective reactance adapted to form with the antenna a resonance circuit with a resonance frequency and a driver adapted to provide to the resonance circuit an electric transmission signal having an instantaneous frequency that varies in dependence on an information signal. The transmitter is characterized in that the transmitter is adapted to dynamically change the resonance frequency by changing the effective reactance in dependence on the information signal. Thus, the instantaneous pass-band of the resonance circuit may be controlled to substantially always comprise the instantaneous frequency of the electric transmission signal and thus of the electromagnetic signal.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: October 21, 2014
    Assignee: Oticon A/S
    Inventor: Kåre Tais Christensen
  • Patent number: 8868008
    Abstract: A switch circuit with a unit capable of improving a margin voltage without using a negative bias generation circuit is provided. A switch comprising an N-type MOSFET is used for a switch passing a signal to an antenna and a switch comprising a P-type MOSFET is used for a shunt switch grounding a signal. A common control signal is input to the gate terminal of the MOSFET constituting each switch. The inverted signal of this control signal is coupled to a ground terminal of the switch, and thus the potential of the gate terminal of each MOSFET can be set to the ground voltage.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: October 21, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Satoshi Tanaka, Tadashi Matsuoka, Masanori Iijima, Yasushi Shigeno
  • Patent number: 8868006
    Abstract: A bi-directional signal interface includes a first waveguide that propagates a first traveling wave. The first waveguide has one end that is coupled to a RF input port that receives a RF transmission signal and another end that is coupled to a RF bi-directional port that receives a RF reception signal and that transmits the RF transmission signal. A second waveguide is positioned proximate to the first waveguide. The second waveguide has one end that is coupled to an output port that passes the received RF reception signal. A non-reciprocal coupler couples fields from the first waveguide to the second waveguide so that the RF reception signal from the bi-directional port couples from the first waveguide to the second waveguide in a substantially non-reciprocal manner and then passes through the output port, and the RF transmission signal from the RF input port passes through the first waveguide to the RF bi-directional port.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: October 21, 2014
    Assignee: Photonic Systems, Inc.
    Inventors: Charles Cox, Edward Ackerman
  • Publication number: 20140308906
    Abstract: A high frequency circuit module is provided with: a multilayer circuit substrate; a first high frequency switch that switches connection of an antenna; a transmission filter; and reception filters. Either the transmission filter or the reception filters, or both, and the first high frequency switch are embedded in the multilayer circuit substrate, and ground conductors are formed in a conductive layer facing embedded electronic components.
    Type: Application
    Filed: October 25, 2013
    Publication date: October 16, 2014
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tetsuo SAJI, Hiroshi NAKAMURA
  • Patent number: 8860254
    Abstract: Disclosed herein is a power feeding apparatus, including: a power feeding portion adapted to feed an electric power in a wireless manner; and a storage body storing therein the power feeding portion. The storage body includes a main body, a first storage portion formed within the main body and storing therein the power feeding portion, and at least one second storage portion formed so as to be adapted to store or retrieve a power receiving apparatus as a storage object in or from the main body, the electric power of the power feeding portion stored in the first storage portion being adapted to be fed from the at least one second storage portion. At least a magnetically shielding portion is formed in an outer peripheral portion, and the at least one second storage portion forms a magnetically closed space in a state of being stored in the main body.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: October 14, 2014
    Assignee: Sony Corporation
    Inventors: Osamu Kozakai, Hiroyuki Mita
  • Patent number: 8861498
    Abstract: A high-frequency switch module includes a first diplexer arranged to receive a GPS signal and to send/receive a GSM 1800 communication signal and a GSM 1900 communication signal, and a switch element arranged to switch between the sending/receiving of the GSM 1800 and the sending/receiving of the GSM 1900 communication signal. A SAW filter having a passage band corresponding to the frequency band of the GSM 1900 communication signal and a SAW filter having a passage band corresponding to the frequency band of the GSM 1800 communication signal are connected to the switch element. A line length of a transmission line for connection to the SAW filter which provides a reflection phase closer to the open side for the GPS signal as viewed from the switch element is greater than that of a transmission line for connection to the other SAW filter.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: October 14, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Hiromichi Kitajima
  • Patent number: 8855580
    Abstract: Circuits and methods are disclosed for reducing interference from transmitter leakage in a radio transceiver. An exemplary method for reducing interference from transmitter leakage in a radio transceiver comprises downconverting, filtering, and sampling a radio frequency signal comprising a desired signal and a transmitter leakage signal to obtain a sampled signal of interest. The method further comprises generating a sampled distortion signal estimate that estimates one or more distortion products of the transmitter leakage signal, such as a squared amplitude obtained from a square-law device or corresponding digital function. Finally, the method comprises combining the sampled distortion signal estimate with the sampled signal of interest to obtain interference-reduced signal samples.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: October 7, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Paul Wilkinson Dent, Sven Mattisson
  • Patent number: 8849347
    Abstract: Frequency conversion methods and systems are disclosed for a transceiver for personal area networks (PAN) and near field communication (NFC). NFC data may be received and/or transmitted via the NFC radio and PAN data may be received and/or transmitted via the PAN radio. With an integration of frequency conversion for PAN and NFC, both systems may operate from a single frequency source, thereby reducing part count and power consumption. Communication between PAN and NFC channels may be enabled via a single chip.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: September 30, 2014
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Patent number: 8848385
    Abstract: The present disclosure relates to reducing unwanted RF noise in a printed circuit board (PCB) containing an RF device. An isolation filter is embedded in a PCB containing an RDF device. By placing the isolation filter as close as possible to the RF device in order to dramatically reduce unwanted RF noise due to unavoidable coupling between Vias and planes in the PCB structure.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: September 30, 2014
    Assignee: R&D Sockets, Inc
    Inventors: Thomas P. Warwick, James V. Russell
  • Patent number: 8843084
    Abstract: Apparatus for providing antenna diversity for a radio transmitter/receiver (TR) comprising measuring means for measuring relative received signal strengths in a plurality of antennas in a selectable frequency range, means for selecting the selectable frequency range according to a transmission frequency of the TR, and connecting means for connecting the antenna having the greatest received signal strength to the TR. The apparatus may be combined with a plurality of antennas to form a diversity antenna system, for example for use with a personal radio. The antennas may then be disposed spaced apart on the user's body e.g. by being incorporated into a garment.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: September 23, 2014
    Assignee: BAE SYSTEMS plc
    Inventors: Christopher Ralph Pescod, James Christopher Gordon Matthews, Andrew James Smith
  • Patent number: 8843086
    Abstract: Apparatus, and an associated method, that facilitates communication of data in a radio communication system that utilizes a slotted communication scheme. Multiple successive time slots are allocable upon which to communicate data to a receiving communication station. At selected intervals, a controller causes the mode of operation of the receiving communication station to be changed to pause operation in a receive mode and, during the pause, to cause operation of the receiving communication station to transmit data, such as control acknowledgments or other responses.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: September 23, 2014
    Assignee: BlackBerry Limited
    Inventors: Matthias Wandel, Mark Pecen
  • Patent number: 8838044
    Abstract: An attenuating antenna switch may be used to suppress increase in the scale and power consumption of an RFIC. The antenna switch has a first terminal, a second terminal, and an antenna terminal coupled to the first and second terminals and configured to be connected to an antenna. The first switch switches between a first state in which a high frequency signal is propagated between the first terminal and the antenna terminal, and a second state in which the high frequency signal is interrupted. A second switch switches between the first and second states between the second terminal and the antenna terminal. The first and second switches are controlled in a mutually exclusive manner such that only one of the two switches can be in the first state at any given time. When in the first state, each switch adjusts an attenuation amount of the high frequency signal.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: September 16, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Satoshi Goto, Kazuaki Hori, Satoshi Sakurai
  • Patent number: 8838045
    Abstract: Embodiments disclosed herein relate to programmable duplexers. The frequency pass band of the programmable duplexer is changed according to a selection of a channel-pair selection to control or maximize the transition band between the receiver path and the transmitter path. The programmable duplexer permits selections of desired pass bands without the need for multiple duplexer filters. As an additional advantage, the transmission band requirements become less sensitive to manufacturing tolerances and temperature variations.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: September 16, 2014
    Assignee: RF Micro Devices, Inc.
    Inventors: Joshua J. Caron, Julio Costa, Todd Gillenwater
  • Patent number: 8830010
    Abstract: The high frequency circuit module includes an RFIC configured to transmit and receive a high frequency signal, a power amplifier IC configured to amplify a transmission signal outputted from the RFIC, and a duplexers configured to separate the transmission signal outputted from the power amplifier IC and inputted to an antenna and a reception signal from the antenna and inputted to the RFIC from each other, in which at least one of the RFIC and power amplifier IC is embedded in the circuit substrate, and the duplexers are disposed between the RFIC and the power amplifier IC.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: September 9, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hiroshi Nakamura, Tomohiro Igarashi
  • Patent number: 8824976
    Abstract: A switchplexer is described. The switchplexer includes switches that are coupled to an antenna. The switchplexer also includes ports. Each of the switches is separately coupled to one of the ports. The switchplexer also includes controlling circuitry coupled to the switches. The controlling circuitry concurrently closes at least two of the switches when indicated by a control signal.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: September 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Puay H. See
  • Patent number: 8824974
    Abstract: The present invention provides a semiconductor integrated circuit device and a radio frequency module realizing reduction in high-order harmonic distortion or IMD. For example, a so-called antenna switch having a plurality of transistors between an antenna terminal and a plurality of signal terminals is provided with a voltage supply circuit. The voltage supply circuit is a circuit for supplying voltage from a voltage supply terminal to at least two signal terminals in the plurality of signal terminals via resistive elements. With the configuration, antenna voltage dropped due to a leakage or the like can be boosted and, for example, transistors in an off state can be set to a deep off state.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: September 2, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akishige Nakajima, Yasushi Shigeno, Takashi Ogawa, Shinnichirou Takatani, Shinya Osakabe, Tomoyuki Ishikawa
  • Patent number: 8824420
    Abstract: A method and system generating signal to select a subset of antennas from a set of antennas to transmit user data in a wireless communication system. User data are transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channels are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, an optimal subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a sequent TTI, and in which the selecting is performed adaptively.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: September 2, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Neelesh B. Mehta, Erdem Bala, Jinyun Zhang
  • Patent number: 8818298
    Abstract: There is provided a high frequency switch formed on an SOI substrate and having improved insertion loss characteristics in a multimode system. The high frequency switch includes: at least one first port; at least one second port; a common port; a first series switch; and a second series switch.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: August 26, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Tsuyoshi Sugiura
  • Patent number: 8818267
    Abstract: Exemplary embodiments are directed to a transceiver. A transceiver may include a rectifier coupled to a capacitor. The transceiver may further include a power management module coupled to the capacitor, wherein the capacitor is configured as a power supply capacitor in a first mode and a rectifier capacitor in a second, different mode.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: August 26, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Jafar Savoj
  • Patent number: 8805299
    Abstract: In a high-frequency module, a first individual terminal in a switch IC is connected to a first filter and a third filter whose pass bands are far from each other. A low-pass-filter phase circuit including an inductor and a capacitor is connected between the first individual terminal and the first filter. A second individual terminal is connected to a second filter and a fourth filter whose pass bands are far from each other. A low-pass-filter phase circuit is connected between the second individual terminal and the second filter.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: August 12, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Takanori Uejima
  • Patent number: 8805289
    Abstract: A standing wave ratio measuring circuit includes an amplifier circuit amplifying a transmission signal; a first circulator outputting the transmission signal amplified in a direction of an antenna, and outputting a reception signal received by the antenna to a reception system; a traveling wave bypassing unit allowing the transmission signal (the traveling wave), before being input to the amplifier circuit, to travel to the reception system while bypassing the amplifier circuit when a request to measure a standing wave ratio is detected; a second circulator outputting the traveling wave bypassing the amplifier circuit in a direction of the first circulator; a control unit controlling the amplifier circuit; a reflected wave acquiring unit acquiring a reflected wave at a location after the second circulator in the reception system; and a measuring circuit measuring the standing wave ratio using the traveling wave and the reflected wave.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventor: Masahiro Kasai
  • Patent number: 8798564
    Abstract: A transmitter includes an up-converter and a modular receptacle. The up-converter is coupled to convert an input signal into a Radio Frequency (RF) signal having an output frequency, and is configurable to adjust the output frequency over a frequency range containing multiple sub-bands. The modular receptacle includes a first interconnection adapter coupled to the up-converter and a second interconnection adapter for coupling to an antenna. The receptacle is configured to receive between the first and second interconnection adapters a Power Amplifier (PA), which is selected from a group of power amplifiers each covering a respective sub-band in the frequency range.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: August 5, 2014
    Assignee: Provigent Ltd.
    Inventor: Shaul Klein
  • Publication number: 20140213200
    Abstract: A transceiver includes an integrated circuit that enables board-level configuration of an on-chip or external transmit/receive switch. The transceiver uses a high-Q matching network, at least part of which is external, that improves receiver performance; increases transmit power while allowing for configuration of the same chip to use an internal TR switch, or external TR switch by changing connection at the board level rather than the chip level.
    Type: Application
    Filed: February 18, 2013
    Publication date: July 31, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: James Brinkhoff, Andrew Adams
  • Publication number: 20140213199
    Abstract: An antenna switch is provided, comprising: an antenna cable connector that connects to a radio RF output port that both receives an RF signal at a receive frequency, and transmits an RF signal at a transmit frequency that differs from the receive frequency; an RF switch having a common contact that is switchable between a receive antenna contact and a transmit antenna contact; a level comparator comprising an input connected to the antenna cable that: when a voltage at the input is below a predefined threshold value, causes the RF switch to contact the receive antenna; and when the voltage at the input is above a predefined threshold value, causes the RF switch to contact the transmit antenna.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 31, 2014
    Applicant: STARTRAK INFORMATION TECHNOLOGIES, LLC
    Inventor: Herbert Perten
  • Patent number: 8792836
    Abstract: A front end module includes a duplexer and a balancing network. The duplexer includes a compensation circuit and a transformer three windings having five nodes. The first node for operably coupling an antenna to the first winding; the second node operable to receive an outbound wireless signal and operably couples the first winding to the second winding; the third node operably couples the second winding to a balancing network; the fourth node operably coupled to output a first signal component corresponding to an inbound wireless signal from the third winding; and the fifth node operably coupled to output a second signal component corresponding to an inbound wireless signal from the third winding. The duplexer provides electrical isolation between the first and second signal components and the outbound wireless signal. The compensation module is operable to compensate the electrical isolation between the first and second signals and the outbound wireless signal.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: July 29, 2014
    Assignee: Broadcom Corporation
    Inventors: Mohyee Mikhemar, Hooman Darabi
  • Patent number: RE45273
    Abstract: A transceiver system includes a first section coupled to a first antenna, a second section coupled to a second antenna, and a radio frequency (RF) unit. The first section includes a transmit path and a first receive path for a first (e.g., GSM) wireless system, a transmit path and a first receive path for a second (e.g., CDMA) wireless system, and a transmit/receive (T/R) switch that couples the signal paths to the first antenna. The second section includes a second receive path for the first wireless system and a second receive path for the second wireless system. The first and second receive paths for the first wireless system are for two frequency bands. The first and second receive paths for the second wireless system are for a single frequency band and provide receive diversity. The transceiver system may include a GPS receive path coupled to a third antenna.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: December 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Robert Lloyd Robinett