Transistor Or Integrated Circuit Patents (Class 455/333)
  • Patent number: 10687150
    Abstract: An apparatus includes a battery, a plurality of circuit components operable independently, and a controller coupled to the battery and the plurality of circuit components and configured to control operation of the plurality of circuit components. The apparatus further includes a power consumption monitor coupled to the controller and configured to calculate a remaining battery life of the battery based on at least one operating time of a corresponding at least one of the plurality of circuit components.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: June 16, 2020
    Assignee: AUDIOTONIQ, INC.
    Inventor: Frederick Charles Neumeyer
  • Patent number: 10554294
    Abstract: The systems and processes described herein can reduce the footprint of the internal devices of a wireless device by combining the DC-DC supply regulator with a FEM. Further, the device footprint can be further reduced by sharing the integrated DC-DC supply regulator among multiple FEMs reducing or eliminating the use of a separate DC-DC supply regulator for each FEM of a wireless device. Moreover, in certain embodiments, by integrating the DC-DC supply regulator into a 2G FEM, power efficiency can be improved for some wireless devices. For example, the DC-DC supply regulator may be used to supply power to a PA used for high-band 2G transmission functions. Using the DC-DC supply regulator can improve power efficiency compared to systems that supply the power for the high-band 2G PA directly from the power supply (e.g., the battery).
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: February 4, 2020
    Assignee: Skyworks Solutions, Inc.
    Inventor: David Steven Ripley
  • Patent number: 10530237
    Abstract: An energy storage system for use in a renewable energy power system is provided. More particularly, an energy storage system can be coupled to the DC bus of a power converter in a renewable energy power system. A switching power supply can be coupled between the energy storage device and the DC bus of the power converter. The switching power supply can include a bi-directional resonant DC to DC converter. The bi-directional resonant converter can include a plurality of switching elements, a resonant circuit coupled to the at least one switching element, and a filtering circuit coupled to the resonant circuit. The bi-directional resonant converter can be configured to accommodate power flow in at least two directions.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: January 7, 2020
    Assignee: General Electric Company
    Inventors: Robert Gregory Wagoner, Harold Robert Schnetzka
  • Patent number: 10454543
    Abstract: A method and an apparatus for transmitting a signal by using a plurality of radio units (RUs) to a user equipment (UE). The apparatus is configured to: determine an RU set including at least two RUs of the plurality of the RUs based on a feedback regarding a received strength of a transmission beam formed by the plurality of the RUs, wherein the feedback is received from the UE; determine a distributed precoding matrix of which a diversity order is predetermined based on information about an RU included in the RU set; and perform a precoding based on the distributed precoding matrix and transmitting a precoded signal to the UE through the RU set.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: October 22, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seuck Ho Won, Yeong Jin Kim, Il Gyu Kim
  • Patent number: 10447458
    Abstract: Circuits and methods related to radio-frequency (RF) architectures having carrier aggregation. In some implementations, a carrier aggregation (CA) architecture can include a duplexer configured to provide duplexing functionality for a first frequency band and a second frequency band with a common antenna. The CA architecture can further include a first amplification path and a second amplification path coupled to respective ports of the duplexer, each of the first amplification path and the second amplification path configured to amplify a signal in its respective frequency band, each amplification path including a transmit/receive (TX/RX) switch configured to provide time-division duplexing (TDD) functionality for the amplified signal and a received signal. In some implementations, the first frequency band includes a B39 band, and the second frequency band includes a B41 band.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: October 15, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Ethan Chang, Roman Zbigniew Arkiszewski, John G Freed, Edward James Anthony, Reza Kasnavi
  • Patent number: 10375754
    Abstract: A radio frequency front end (RFFE) is configured to support dual connectivity communications, in which two different radio access technologies such as LTE and NR are used simultaneously for uplink communications from a wireless communications device to a base station. The RFFE has two channels and two respectively associated antennas. The first channel transmits an NR signal from the first antenna. The second channel transmits an LTE signal from the second antenna. For reception, the first channel produces a main NR receive signal and LTE diversity signal. The second channel produces a main LTE receive signal and an NR diversity signal.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: August 6, 2019
    Assignee: T-Mobile USA, Inc.
    Inventors: Wei-Ming Lan, Ming Shan Kwok
  • Patent number: 10283353
    Abstract: A method of reforming an insulating film deposited on a substrate having a recess pattern constituted by a bottom and sidewalls, includes: providing the film deposited on the substrate having the recess pattern in an evacuatable reaction chamber, wherein a property of a portion of the film deposited on the sidewalls is inferior to that of a portion of the film deposited on a top surface of the substrate; adjusting a pressure of an atmosphere of the reaction chamber to 10 Pa or less, which atmosphere is constituted by H2 and/or He without a precursor and without a reactant; and applying RF power to the atmosphere of the pressure-adjusted reaction chamber to generate a plasma to which the film is exposed, thereby reforming the portion of the film deposited on the sidewalls to improve the property of the sidewall portion of the film.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: May 7, 2019
    Assignee: ASM IP Holding B.V.
    Inventors: Akiko Kobayashi, Masaru Zaitsu, Nobuyoshi Kobayashi, Masaru Hori
  • Patent number: 9972587
    Abstract: A signal transmission device comprises: a first lead frame having a first major surface and a second major surface opposite to the first major surface; a second lead frame having a third major surface and a fourth major surface and isolated from the first lead frame, the fourth major surface located opposite to the third major surface; a transmission circuit that sends a transmission signal, the transmission circuit located on the first major surface of the first lead frame; a receiving circuit located on the third major surface of the second lead frame; and an electromagnetic resonance coupler located across between the second major surface of the first lead frame and the fourth major surface of the second lead frame to transmit the transmission signal, sent by the transmission circuit, to the receiving circuit in a contactless manner.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: May 15, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Songbaek Choe, Shuichi Nagai
  • Patent number: 9880802
    Abstract: A processing path may include a controller and a plurality of processing paths including a first processing path and a second processing path. The first path may be configured to generate a first digital signal based on an analog input signal and the second path may be configured to generate a second digital signal based on the analog input signal, wherein the first path has a lower gain and a higher noise floor than the second path. The controller may be configured to determine that a transition between the first path and the second path needs to occur based on the analog input signal crossing a threshold or a prediction that the input signal will cross the threshold and in response to determining the transition between the first path and the second path needs to occur, blend the transition during or near zero cross points of the analog input signal.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: January 30, 2018
    Assignee: Cirrus Logic, Inc.
    Inventors: Aniruddha Satoskar, Daniel J. Allen, Edmund Mark Schneider, Tejasvi Das, Ku He, John L. Melanson
  • Patent number: 9743182
    Abstract: A system may include control circuitry for detecting a plosive event associated with a microphone transducer and in response to the plosive event, causing restoration of acoustic sense operation of the microphone transducer and a processing circuit associated with the microphone transducer. A system for configuring a filter having at least two frequency response configurations to achieve an effective frequency response configuration intermediate to the at least two frequency response configurations may include control circuitry for rapidly switching between the at least two frequency response configurations such that a weighted average frequency response of the filter corresponds to the effective frequency response configuration.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: August 22, 2017
    Assignee: Cirrus Logic, Inc.
    Inventors: Jaimin Mehta, Stephen T. Hodapp
  • Patent number: 9634659
    Abstract: One or more systems and techniques for limiting a voltage potential between an antenna and a radio-frequency switch circuit are provided. A voltage controller comprises a voltage generator, a voltage detection circuit and a switch cell. The voltage detection circuit is coupled to the voltage generator and to the switch cell, and the switch cell is coupled to a voltage source, and to a node between the radio-frequency switch circuit and the antenna. When the voltage potential exceeds a specified threshold, the voltage generator produces a voltage which the voltage detection circuit measures such that the voltage detection circuit activates the switch cell, resulting in a short circuit between the radio-frequency switch circuit and the voltage source. This serves to inhibit the voltage potential from exceeding the specified threshold, for example.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: April 25, 2017
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Jun-De Jin, Tzu-Jin Yeh, Chewn-Pu Jou
  • Patent number: 9625289
    Abstract: This invention relates to a calibration method of modulation power for DVB-H test apparatus for reducing the calibration time for the power loss in the RF cable to half through calibration using the expected power loss of the modulated wave at an arbitrary frequency based on the measured power losses of the continuous wave over frequencies in the RF cable.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: April 18, 2017
    Assignee: INNOWIRELESS CO., LTD.
    Inventors: Jinsoup Joung, Jongmin Kim, Changbok Yang, Myunggu Kang
  • Patent number: 9590745
    Abstract: A method operative on a wireless transceiver device for performing beamforming calibration includes: measuring at least one joint signal response of at least one circuit loopback between a transmitter of the wireless transceiver device and a receiver of the wireless transceiver device to determine the measurement result; and calibrating joint signal path mismatch according to the measurement result for s multiple antenna beamforming system operating on the wireless transceiver device.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: March 7, 2017
    Assignee: MEDIATEK INC.
    Inventors: Yen-Lin Huang, Hsiang-Hui Chang, Hung-Tao Hsieh, Gary A. Anwyl, Thomas Edward Pare, Jr.
  • Patent number: 9524985
    Abstract: The invention relates to a Radio Frequency System and method. A Radio Frequency (RF) system comprising a RF switch comprising a plurality of transistor switching elements implemented on Silicon on Insulator (SOI) for switching at least one or more RF signals and said SOI comprises a bulk substrate region and a buried oxide region. At least one filter is adapted to isolate the RF signal from the substrate and/or other high frequency signals or control signals present in the RF system. There is also provided a coupling capacitor adapted to cooperate with the filter to improve linearity of the transistor switch elements.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: December 20, 2016
    Assignee: Ferfics Limited
    Inventors: Eugene Heaney, John O'Sullivan, Stephen Keeney
  • Patent number: 9438303
    Abstract: A front end circuit includes a transmission signal filter for allowing a transmission signal to pass, a reception signal filter for allowing a reception signal to pass and a circulator (an antenna duplexer), and a transmission output variable circuit is connected between a transmission signal terminal of the circulator and the transmission signal filter. The transmission output variable circuit includes a first high frequency switch, a second high frequency switch, and a buffer circuit, and attenuation is switched by switching of the first high frequency switch and the second high frequency switch.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: September 6, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kengo Onaka, Hiroya Tanaka, Hidenori Obiya
  • Patent number: 9414280
    Abstract: A technique for operating an RNC of a communication network during a soft handover process of a mobile terminal between a first BS and at least one second BS that are connected to the RNC is provided. A method implementation of the technique comprises receiving, at a MAC protocol layer of the RNC, a first data frame stream from the first BS via a first data path and a second data frame stream from the second BS via a second data path. A relative delay between the data frames of the first and the second data frame stream regarding their arrival at the RNC is determined. The relative delay takes into account different systematic propagation durations from the first BS and the second BS to the RNC. At then the MAC protocol layer, data frames of the first and the second data frame stream are then merged into a third data frame stream which is transmitted to a protocol layer above the MAC protocol layer. The merging of the data frames is carried out in dependence on the relative delay.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: August 9, 2016
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON
    Inventors: Sándor Rácz, Szilveszter Nádas, Martin Skarve
  • Patent number: 9407349
    Abstract: A wireless transmitter has a modulator modulating an information signal of a frequency f1 by a carrier wave of a frequency f2 to output a first modulated signal, a transmitting antenna transmitting the first modulated signal using a linearly polarized wave, and a motor rotating the transmitting antenna at a frequency f3 to rotate the outgoing linearly polarized wave at the frequency f3 thereby multiplexing the first modulated signal with a linearly polarized wave component and a horizontally polarized wave component, the two components being independent of each other. A wireless receiver has diversity receiving antennas receiving the signal on a plurality of polarization planes to obtain a plurality of input signals; a path difference phase shifter compensating each of the input signals for the phase shift stemming from path differences, and a composer composing the corrected received signals.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: August 2, 2016
    Assignee: HITACHI, LTD.
    Inventor: Ken Takei
  • Patent number: 9407311
    Abstract: A first electronic device may include a first electronic circuit and a second electronic circuit. The first electronic device may include an internal communication link providing a signal path for conducting communication signals between the first electronic circuit and the second electronic circuit. An interface circuit may be operatively coupled to the internal communication link. The interface circuit may include an extremely high frequency (EHF) communications circuit configured to receive an EHF electromagnetic signal from another EHF communications circuit of a second electronic device. This EHF electromagnetic signal may enable the second electronic device to control or monitor the first electronic device.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: August 2, 2016
    Assignee: Keyssa, Inc.
    Inventors: Gary D. McCormack, Ian A. Kyles
  • Patent number: 9401737
    Abstract: Embodiments of the present invention may be used to generate oscillating signals. One embodiment of the present invention includes a circuit that receives a differential signal to be divided. The circuit converts the differential signal into an injection signal. The injection signal is coupled to an oscillator, and the oscillator generates an output signal having a frequency that is a fraction of the frequency of the differential input signal. In another embodiment, the present invention includes a MIMO wireless communication system. The MIMO system may use the divider circuit to divide a local oscillator signal with reduced common mode distortion.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: July 26, 2016
    Assignee: Marvell International Ltd.
    Inventors: Paolo Rossi, Sang Won Son
  • Patent number: 9385424
    Abstract: The three-dimensional integrated structure including a support element, an interface device connected to the support element by first electrically conductive connection, an integrated circuit arranged between the support element and the interface device and connected to the interface device by second electrically conductive connection, a filler region between the second electrically conductive connection and between the interface device and the integrated circuit, and an antenna, having a radiating element in electromagnetic coupling with an excitation element through the interconnection of a slot, the antenna being distributed over the interface device and the integrated circuit.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: July 5, 2016
    Assignees: STMicroelectronics SA, Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Pierre Bar, Laurent Dussopt, Jean-François Carpentier
  • Patent number: 9331031
    Abstract: A wireless communication system includes: a filter; and a semiconductor chip including a signal processing integrated circuit having an amplifier, wherein a main surface of the semiconductor chip is provided with a plurality of electrode terminals along an edge portion thereof; wherein the amplifier has a transistor including a control electrode, a first electrode through which a signal is outputted, and a second electrode to which a voltage is applied; wherein the control electrode, the first electrode and the second electrode of the transistor are connected to the electrode terminals, respectively; and wherein none of wirings are arranged between the electrode terminals and placements of the control electrode, the first electrode and the second electrode, making space between the electrodes and the electrode terminals narrow.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: May 3, 2016
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Kumiko Takikawa, Satoshi Tanaka, Yoshiyasu Tashiro
  • Patent number: 9203528
    Abstract: A method for reducing frequency band interference for a multi-mode terminal, including: using a first frequency band to establish a first service in a first network standard; using a second frequency band to establish a second service in a second network standard; when determining that the first frequency band and the second frequency band interfere with each other, updating a frequency band capability support state or reporting an interference collision event to a network corresponding to a low-priority service, so that the network corresponding to the low-priority service updates a frequency band used by the low-priority service to a frequency band that has less interference with a frequency band used by a high-priority service, and establishing the low-priority service according to the updated frequency band. According to the embodiments of the present invention, interference between frequency bands of the multi-mode terminal may be reduced.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: December 1, 2015
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaochun Zheng, Xuehong Zeng, Jingjun Yang
  • Patent number: 9197159
    Abstract: A mixer includes a first node to which an intermediate frequency (IF) signal is input; first and second transistors that respectively have control terminals supplied with local signals having mutually opposite phases and output terminals connected to the first node; a first filter that is connected between the output terminal of the second transistor and the first node and suppresses passage of the IF signal; a second node to which the IF signal is input; third and fourth transistors that respectively have control terminals supplied with local signals having mutually opposite phases and output terminals connected to the second node; a second filter that is connected between the output terminal of the fourth transistor and the second node and suppresses passage of the IF signal; and a combiner combining a signal output from the first node and a signal output from the second node.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: November 24, 2015
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Device Innovations, Inc.
    Inventors: Seiji Fujita, Tsuneo Tokumitsu
  • Patent number: 9197280
    Abstract: A radio frequency switch may include: a common port transmitting and receiving a radio frequency signal; a receive switch unit including a first switch unit having a plurality of first switch elements and a second switch unit having a plurality of second switch elements; and a transmit switch unit including a third switch unit having a plurality of third switch elements and a fourth switch unit having a plurality of fourth switch elements. The receive switch unit may further include a plurality of first capacitors connected between a first terminal and a body terminal of each of the plurality of first switch elements. The transmit switch unit may further include a plurality of second capacitors connected between a second terminal and a body terminal of each of the plurality of third switch elements.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: November 24, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Hwan Yoo, Jong Myeong Kim, Hyun Jin Yoo, Yoo Sam Na, Yoo Hwan Kim
  • Patent number: 9197253
    Abstract: A RF switch may include: a common port coupled to an antenna to transmit and receive first and second high frequency signals; a transmitting switching unit coupled between a transmitting port transferring the first high frequency signal and the common port and including a plurality of switching devices coupled to each other in series; and a receiving switching unit coupled between a receiving port transferring the second high frequency signal and the common port and including a first switching unit including a first switching device. The first switching unit may further include a second switching device having a first terminal coupled to a first terminal of the first switching device and a second terminal coupled to a control terminal of the first switching device.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: November 24, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Jin Yoo, Yoo Sam Na, Jong Myeong Kim, Hyun Hwan Yoo, Yoo Hwan Kim
  • Patent number: 9190956
    Abstract: A sub-harmonic electronic mixer has at least one field effect transistor (FET) having a gate, source, and drain; and a useful signal input at a useful frequency; and a local oscillator input. The input receives the oscillator signal at a frequency being an integral fraction of the useful frequency, plus or minus a mixing frequency to provide a signal output. A gate of the FET and/or the drain and/or the source receives the useful signal to generate a gate-source voltage and/or a drain-source voltage whereby the gate receives the local oscillator signal to generate a gate-source voltage, and the drain or a source receives the local oscillator signal to generate a drain-source voltage. A phase shift is introduced between the signal received at the gate and the signal received at the drain or source of the FET.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: November 17, 2015
    Assignee: Johann Wolfgang Goethe-Universitat Frankfurt a.M.
    Inventors: Hartmut G. Roskos, Alvydas Lisauskas, Sebastian Boppel
  • Patent number: 9190975
    Abstract: A radio receiver and method of operating the same are disclosed. In one embodiment, the radio receiver may include a RF receive path configured to convey a first radio signal within a first band to a radio tuning circuit. The RF receive path may be controllable using a first AGC circuit. The radio receiver may also include a loop-through path configured to convey a second radio signal within a second band between an input and an output of the radio receiver. The second band may be different from the first band. The loop-through path may be controllable using a second AGC circuit.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: November 17, 2015
    Assignee: Silicon Laboratories Inc.
    Inventors: Dan B. Kasha, Russell Croman, Mike R. May, Mark W. May, Navin Harwalkar, Tim Stroud
  • Patent number: 9178725
    Abstract: Systems, apparatus, modules, and methods of communicating with memory devices utilizing multi-band communication containing a baseband and one or more amplitude shift keyed (ASK) RF channels over each differential pair of off-chip transmission lines. Configurations are described for interfacing between microprocessors, or controllers and memory devices or modules, and within a DIMM and its DRAM devices, and between multiple DIMM memory modules.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: November 3, 2015
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Mau-Chung Chang, Sai-Wang Tam, Gyung-Su Byun, Yanghyo Kim, Kanit Therdsteerasukdi, Jeremy Ir, Glenn Reinman, Jingsheng Cong
  • Patent number: 9148108
    Abstract: Provided is a band pass filter constituted by a printed circuit board (PCB) and a multi-layer ceramic chip (MLCC) to be mounted in a circuit, without additional parts such as a low temperature co-fired ceramic (LTCC) based filter, and so on, and it is an object to produce a band pass filter constituted by an inductor formed of a PCB pattern and a capacitor formed of an MLCC to implement a high performance and compact band pass filter. The band pass filter includes an inductor pattern part formed of a plurality of PCB patterns and having inductance; an MLCC part constituted by a plurality of MLCCs mounted in a lower end side of the inductor pattern part and having a capacitance; and a port part formed of a plurality of PCB patterns and connected to the PCB patterns extending from the inductor pattern part.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: September 29, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Seung Goo Jang
  • Patent number: 9143124
    Abstract: Switches for use in RF devices are provided that offer a better balance of power losses and switching times than switches of the prior art. Switches of the present invention comprise a stack of transistors controlled a symmetric bias network. The stack of transistors includes an even number of transistors arranged in series, where every two successive transistors defines a pair. The bias network includes a symmetrically branching set of connections, where the gates of every pair of transistors are connected by a first connection having a first node, and two or more first nodes are connected by a second connection to a second node, and so forth. The symmetry of the bias network tends to reject even harmonics, and the rejection of even harmonics can be further enhanced by adding capacitors between the bias network and the stack of transistors at points of symmetry.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: September 22, 2015
    Assignee: ACCO
    Inventors: Hervé Cam, Stephanie Venec, Filipe Dos Santos
  • Patent number: 9053349
    Abstract: A digital correlator including an input, a plurality of serially connected delay elements, wherein a first delay element of the plurality of serially connected delay elements is coupled to the input, a plurality of current elements, wherein each respective current element of the plurality of current elements is coupled to a respective delay element, and each current element has a current, and a summer for summing the currents of the plurality of current elements, the summer having an output for the digital correlator.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: June 9, 2015
    Assignee: HRL Laboratories, LLC
    Inventors: Randall White, Brian N. Limketkai
  • Patent number: 9042860
    Abstract: A monolithically integrated circuit, particularly an integrated circuit for radio frequency power applications, may include a transistor and a spiral inductor. The spiral inductor is arranged above the transistor. An electromagnetic coupling is created between the transistor and the inductor. The transistor may have a finger type layout to prevent any significant eddy currents caused by the electromagnetic coupling from occurring. The chip area needed for the circuit may be reduced by such arrangement.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: May 26, 2015
    Assignee: INFINEON TECHNOLOGIES AG
    Inventor: Torkel Arnborg
  • Patent number: 9042859
    Abstract: A circuit includes first and second transconductance stages that generate first and second currents, respectively, in response to an input signal. A current combiner circuit selectively couples the first current to a first output, selectively couples the second current to the first output, selectively couples the first current to a second output, and selectively couples the second current to the second output. In response to the first current being coupled to both the first and second outputs, the current combiner circuit couples the second current to both the first and second outputs. In response to the first current being decoupled from the second output, the current combiner circuit decouples the second current from both the first and second outputs. In response to the first current being decoupled from the first output, the current combiner circuit decouples the second current from both the first and second outputs.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: May 26, 2015
    Assignee: Marvell World Trade Ltd.
    Inventors: Gregory Uehara, Xiaohua Fan
  • Patent number: 9020011
    Abstract: A transmit (TX) signal path circuit in a multiple-input, multiple-output (MIMO) transceiver responsive to a digital front end (DFE) for generating receive (RX) path phase alignment signals is disclosed. A digital up-conversion block uses a first numerically-controlled oscillator (NCO) for generating digital intermediate frequency (IF) signals for ordinary TX signal generation, and a different, second NCO for generating digital IF signals for RX phase alignment signal generation. An RF up-conversion block uses a TX local oscillator (LO) for generating analog RF signals for ordinary TX signal generation, and a different feedback (FB) LO for generating analog RF signals for RX phase alignment signal generation. Thus, phase alignment of the circuitry used for ordinary TX signal generation is left undisturbed by RX phase alignment signal generation.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: April 28, 2015
    Assignee: PMC-Sierra US, Inc.
    Inventors: Mark Hiebert, Jay Chen
  • Patent number: 9020458
    Abstract: A passive mixer with channel impedance equalization is disclosed. In an exemplary embodiment, an apparatus includes replica devices configured to generate replica output signals and an error amplifier configured to generate bias signals based on the replica output signals. The bias signals are configured to equalize on-state channel impedances associated with a mixer.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: April 28, 2015
    Assignee: QUALCOMM Incorporated
    Inventor: Jeremy Mark Goldblatt
  • Patent number: 9020457
    Abstract: The present disclosure relates to a circuit for providing a signal gain, comprising: a first stage comprising a first set of variable gain transconductors arranged for receiving an input signal and for performing phase-shifting of the input signal, thereby producing an intermediate signal, and a second stage, comprising a second set of transconductors and a plurality of capacitors arranged for receiving the intermediate signal and for providing an output signal to a combiner, wherein the first stage and second stage together form a filter, and wherein the first set of variable gain transconductors and at least one of the transconductors of the second set define the signal gain of the circuit.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: April 28, 2015
    Assignees: IMEC, Vrije Universiteit Brussel
    Inventors: Viki Szortyka, Piet Wambacq
  • Patent number: 9014649
    Abstract: A system may comprise a plurality of signal processing paths, a bin-wise combiner, an inverse transformation block, and a DAC. Each signal processing path may comprise a transformation block that is operable to transform a first time-domain digital signal to an associated frequency-domain signal having a plurality of subband signals. The bin-wise combiner may be operable to combine corresponding subband signals of the plurality of signal processing paths. The inverse transformation block may be operable to transform output of the bin-wise combiner to an second time-domain signal. The DAC may be operable to converts the second time-domain signal to a corresponding analog signal.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: April 21, 2015
    Assignee: MaxLinear, Inc.
    Inventors: Anand K. Anandakumar, Curtis Ling, Sugbong Kang
  • Patent number: 9014655
    Abstract: A wireless communication system includes: a filter; and a semiconductor chip including a signal processing integrated circuit having an amplifier, wherein a main surface of the semiconductor chip is provided with a plurality of electrode terminals along an edge portion thereof; wherein the amplifier has a transistor including a control electrode, a first electrode through which a signal is outputted, and a second electrode to which a voltage is applied; wherein the control electrode, the first electrode and the second electrode of the transistor are connected to the electrode terminals, respectively; and wherein none of wirings are arranged between the electrode terminals and placements of the control electrode, the first electrode and the second electrode, making space between the electrodes and the electrode terminals narrow.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: April 21, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Kumiko Takikawa, Satoshi Tanaka, Yoshiyasu Tashiro
  • Patent number: 9014654
    Abstract: A semiconductor apparatus includes multiple field effect transistors provided between an antenna terminal to be connected to an antenna and multiple external terminals through which RF signals are capable of being supplied and a voltage generating circuit. When the field effect transistors provided between one of the multiple external terminals and the antenna terminal are turned off, the voltage generating unit charges a capacitor via a resistor circuit by switching the polarity of the RF signal to be supplied to the other external terminal with respect to the control signal and outputs a voltage based on a sum of the charge voltage and the voltage of the control signal as the gate drive voltage. The resistor circuit includes a first resistor including positive temperature characteristics and a second resistor including negative temperature characteristics.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: April 21, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tsutomu Kobori, Shigeki Koya, Akishige Nakajima, Yasushi Shigeno
  • Patent number: 9007116
    Abstract: An up-conversion mixer includes a mixer cell having at least one output node configured to generate an output. The up-conversion mixer further includes a first cascaded transconductance input stage coupled to the mixer cell, the first cascaded transconductance input stage configured to receive an input signal and to reduce a third order harmonic of the output. The up-conversion mixer further includes a second cascaded transconductance input stage coupled to the mixer cell, the second cascaded transconductance input stage configured to receive the input signal and to reduce a third order harmonic of the output.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: April 14, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Huan-Neng Chen, Ying-Ta Lu, Mei-Show Chen, Chewn-Pu Jou
  • Patent number: 8983529
    Abstract: The disclosed communication system, information recording medium, and relay communication device allow communication via electromagnetic induction, allow the use of low-cost information recording media, improve communication stability when information recording media is misaligned or rotated, and provide high IC-chip tolerance to flexion in information recording media. An information recording medium (3-1) has: an IC chip (32-1) that is capable of communication via electromagnetic induction; and a pair of thin conductive sheets (21-1) connected to the IC chip (32-1). A relay medium (2-1) has thin conductive sheets (31-1) and a loop antenna (22-1), with one of said thin conductive sheets (31-1) connected to one end of the loop antenna (22-1) and the other thin conductive sheet (31-1) connected to the other end of the loop antenna (22-1). A read/write device (1-1) has a loop antenna (12-1).
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: March 17, 2015
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomoya Akiyama, Kei Ohsugi
  • Patent number: 8976781
    Abstract: A system including a component of a transceiver, a comparator, a counter, and a calibration circuit. The component receives an input signal comprising packets and based on the input signal, generates output signals to transmit the packets. The comparator compares the output signals to generate a comparison signal. The counter counts cycles of a clock signal to provide a count value. The control device, based on the comparison signal, transitions the counter between incrementing the count value and decrementing the count value. The calibration circuit operates in first and second calibration modes; during the first calibration mode, calibrates the component until the counter transitions a predetermined number of times between incrementing the count value and decrementing the count value; and during the second calibration mode, calibrates the component until (i) the counter transitions between incrementing and decrementing the count value, or (ii) counts a predetermined number of cycles.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: March 10, 2015
    Assignee: Marvell International Ltd.
    Inventors: Lawrence Tse, King Chun Tsai, George Chien, Tyson Leistiko
  • Patent number: 8970282
    Abstract: There is provided a high frequency switch including: a first signal transferring unit including a plurality of first switching devices; a second signal transferring unit including a plurality of second switching devices; a first shunting unit including a plurality of third switching devices; and a second shunting unit including a plurality of fourth switching devices.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: March 3, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Chan Yong Jeong
  • Patent number: 8965304
    Abstract: A multi-mode I/O circuit or cell (10) is provided for transmitting and receiving data between ICs, where each IC contains at least one of the I/O circuits. Each data link includes transmitter circuitry (12) and receiver circuitry (14). The transmitter circuitry sends data to a receiver circuitry in another IC, and the receiver circuitry receives data from a transmitter circuitry in another IC. The I/O circuit is constructed with CMOS-based transistors (e.g., CMOS or BiCMOS) that are selectively interconnected together by a plurality of switches to operate as two single-ended, current or voltage mode links, or as a single differential current or voltage mode link. In the preferred embodiment the transmitter circuitry sends data to the receiver circuitry in another IC over a first pair of adjacently disposed conductors, and the receiver circuitry receives data from the transmitter circuitry in another IC over a second pair of adjacently disposed conductors.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: February 24, 2015
    Assignee: Nokia Corporation
    Inventors: Antti Ruha, Tarmo Ruotsalainen, Jussi-Pekka Tervaluoto
  • Patent number: 8952838
    Abstract: A time domain switching analog-to-digital converter apparatus and methods of utilizing the same. In one implementation, the converter apparatus comprises a carrier signal source, and at least one reference source. The carrier signal is summed with the input signal and the summed modulated signal is fed to a comparator circuit. The comparator is configured detects crossings of the reference level by the modulated waveform thereby generating trigger events. The time period between consecutive trigger events is used to obtain modulated signal deviation due to the input signal thus enabling input signal measurement. Control of the carrier oscillation amplitude and frequency enables real time adjustment of the converter dynamic range and resolution. The use of additional reference signal levels increases sensor frequency response and accuracy. A dual channel converter apparatus enables estimation and removal of common mode noise, thereby improving signal conversion accuracy.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: February 10, 2015
    Assignee: Lumedyne Technologies, Inc.
    Inventors: Richard Waters, Brad Chisum, Mark Fralick, John D. Jacobs, Ricardo Dao, David Carbonari, Jacques Leveille
  • Patent number: 8923779
    Abstract: Systems and methods for tuning an antenna for a frequency modulation (FM) transceiver are provided. A representative system includes: a network of electrical adjustable passive components that receives and sends radio frequency (RF) signals to a receiver circuitry via the network of electrical adjustable passive components. The receiver circuitry determines the received signal strength indication (RSSI) of the RF signal. The system further includes a transmitter circuitry that transmits RF signals via the network of electrical adjustable passive components, and a peak detector circuitry that receives and determines a voltage output of the RF signals from the variable capacitors. An auto-tune circuitry receives the RSSI and output value from the receiver circuitry and the peak detector circuitry, respectively.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: December 30, 2014
    Assignee: CSR Technology Inc.
    Inventors: Noshir Dubash, Thomas E. Ricks, Jr., Richard J. McConnell
  • Patent number: 8923781
    Abstract: According to one embodiment, a semiconductor switch includes a voltage generator, a voltage controller, a driver, and a switch unit. The voltage generator generates a negative first potential. The voltage controller controls the first potential according to a terminal switch signal input from an outside. The driver is input the terminal switch signal, and outputs at least one selected from the first potential and the second potential based on the terminal switch signal. The second potential is a power supply voltage or is higher than the power supply voltage. The switch unit is provided on an SOT substrate, switches a connection between an antenna terminal and any one of high frequency terminals based on the output of the driver.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: December 30, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yugo Kunishi, Toshiki Seshita, Yoshitomo Sagae, Mitsuru Sugawara
  • Patent number: 8913978
    Abstract: A multiphase mixer using a rotary traveling wave oscillator is disclosed. In addition to the oscillator, the mixer includes first and second mixer circuits. The rotary traveling wave oscillator generates a first set of N/2 phase and a second set of N/2 phases, where each phase has a frequency that is a factor of N/2 less than the incoming radio frequency signal. The first set of phases are sine signals and the second set of phases are cosine signals. The first mixer circuit generates a first down-converted signal from the first set of phases and the incoming rf signal. The second mixer circuit generates a second down-converted signal from the second set of phases and the rf signal.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: December 16, 2014
    Assignee: Analog Devices, Inc.
    Inventor: Gregoire Le Grand de Mercey
  • Patent number: 8914082
    Abstract: A mobile terminal and a method of operating an antenna thereof are provided. The mobile terminal includes a plurality of antennas. A resonance frequency moving unit moves a resonance frequency of at least one of the plurality of antennas. And a controller controls the resonance frequency moving unit to sustain or move a resonance frequency of the at least one antenna according to use of a plurality of antennas. Therefore, by minimizing mutual interference occurring between a plurality of antennas using a similar frequency band, a wireless communication performance can be improved.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: December 16, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sung In Seo
  • Patent number: 8897832
    Abstract: Disclosed is a semiconductor device including a semiconductor chip and a semiconductor package. The semiconductor package includes an antenna formed of a lead frame, a first wire that connects the antenna and a first electrode pad of the semiconductor chip, and a second wire that connects the antenna and a second electrode pad of the semiconductor chip. The semiconductor chip is disposed in one of four regions in the semiconductor package sectioned by line segments connecting midpoints of two pairs of opposing sides of the semiconductor package. A centroid of the semiconductor chip is positioned outside a closed curve composed of a straight line segment connecting a first connection point where the antenna and the first wire are connected and a second connection point where the antenna and the second wire are connected, and a line connecting the first and second connection points along the antenna.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: November 25, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Kenichiro Hijioka, Koichi Yamaguchi