Combined With Automatic Amplifier Disabling Switch Means Patents (Class 330/51)
  • Patent number: 10250193
    Abstract: According to an embodiment, a high-frequency semiconductor amplifier circuit includes an input terminal and an output terminal. A gate of a first transistor is connected to the input terminal. A drain of the first transistor is connected to the output terminal. A second transistor is connected between a source of the first transistor and a reference potential terminal. A bias generation circuit has an input control signal terminal, a bias voltage terminal connected to the gate of the first transistor, a control voltage terminal connected to a gate of the second transistor, and an intermediate voltage terminal connected to the drain of the first transistor. The bias generation circuit supplies a control voltage, a bias voltage, and a first voltage according to the input control signal.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: April 2, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiki Seshita, Yasuhiko Kuriyama
  • Patent number: 10242683
    Abstract: The invention relates to a method for mixing a plurality of audio streams coded according to a frequency sub-band coding, comprising the steps for decoding (E201) a part of the coded streams over at least a first frequency sub-band, for summing (E202) the streams thus decoded so as to form at least a first mixed stream. The method is such that it comprises the steps for detection (E203), over at least a second frequency sub-band different from the at least first sub-band, of the presence of a predetermined frequency band in the plurality of coded audio streams and for summing (E205) the decoded audio streams (E204) for which the presence of the predetermined frequency band has been detected, over said at least a second sub-band, so as to form at least a second mixed stream. The invention also relates to a mixing device implementing the method described and may be integrated into a conference bridge, a communications terminal or a communications gateway.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: March 26, 2019
    Assignee: Orange
    Inventors: Arnault Nagle, Claude Lamblin, Balazs Kovesi
  • Patent number: 10236835
    Abstract: A method for ramping a switched capacitor power amplifier is disclosed, where the switched capacitor power amplifier comprises a plurality of capacitors in a capacitor bank, and where a number of the capacitors in the capacitor bank are activated. The method comprises changing the number of capacitors in the capacitor bank that are activated, maintaining the changed number of activated capacitors in the capacitor bank for a period of time, and repeating the changing and maintaining, where a length of the period of time is varied between at least two repetitions of the maintaining.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: March 19, 2019
    Assignee: Stichting IMEC Nederland
    Inventor: Jac Romme
  • Patent number: 10181869
    Abstract: Methods and systems for a configurable low-noise amplifier with programmable band-selection filters may comprise a receiver with a low-noise amplifier (LNA) with first and second input terminals and differential output terminals; a low pass filter operably coupled to the LNA; a high pass filter operably coupled to the second input terminal of the LNA; and a signal source input coupled to the low pass filter and the high pass filter. The LNA may be operable to receive signals in a pass band of the high pass filter and a pass band of the low pass filter. The receiver may be operable to amplify input signals in the pass band of a first filter but not signals in the pass band of the second filter by operably coupling the second to ground.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: January 15, 2019
    Assignee: Maxlinear, Inc.
    Inventors: Raja Pullela, Wenjian Chen, Vamsi Paidi
  • Patent number: 10165523
    Abstract: A communication device for power saving and a method for controlling power thereof are provided. The communication device includes a power amplifying unit and a control unit. The power amplifying unit generates an output signal obtained by amplifying a downlink signal, using a supply voltage, and outputs the output signal. The control unit determines a current state by comparing predetermined downlink reference information with output signal information on the output signal, and, if the current state is an active state as a comparison result, controls the supply voltage to correspond to the output signal information. Accordingly, power for amplifying a signal can be controlled according to communication traffic, thereby preventing consumption of unnecessary power.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: December 25, 2018
    Assignee: SOLiD, INC.
    Inventor: Hwan Sun Lee
  • Patent number: 10148300
    Abstract: Methods and systems for a configurable low-noise amplifier with programmable band-selection filters may comprise a receiver with a low-noise amplifier (LNA) with first and second input terminals and differential output terminals; a low pass filter operably coupled to the LNA; a high pass filter operably coupled to the second input terminal of the LNA; and a signal source input coupled to the low pass filter and the high pass filter. The LNA may be operable to receive signals in a pass band of the high pass filter and a pass band of the low pass filter. The receiver may be operable to amplify input signals in the pass band of a first filter but not signals in the pass band of the second filter by operably coupling the second to ground.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: December 4, 2018
    Assignee: Maxlinear, Inc.
    Inventors: Raja Pullela, Wenjian Chen, Vamsi Paidi
  • Patent number: 10097169
    Abstract: An analog circuit including a pair of input nodes and a pair of output nodes is coupled to a mismatch reduction circuit including an input node, an output node, a phase controller that times even and odd phases, an input switch, and an output switch. The input switch electrically connects the mismatch reduction circuit input node to a first node of the pair of analog circuit input nodes during each even phase and to electrically connects the mismatch reduction circuit input node to a second node of the pair of analog circuit input nodes during each odd phase. The output switch electrically connects a first node of the pair of analog circuit output nodes to the mismatch reduction circuit output node during each even phase and electrically connects a second node of the pair of analog circuit output nodes to the mismatch reduction circuit output node during each odd phase.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: October 9, 2018
    Assignee: Micron Technology, Inc.
    Inventors: Dong Pan, John D. Porter
  • Patent number: 10007358
    Abstract: A display device includes: a display panel including a display area; scan lines disposed on the display panel; data lines disposed on the display panel, the data lines crossing the scan lines while being insulated from the scan lines; pixel units disposed in the display area and positioned at a point where the scan line intersects the data line; and photosensors respectively connected to the pixel units, each photosensor configured to activate a respective pixel units when laser light is incident on the photosensor.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: June 26, 2018
    Assignee: Samsung Dispiay Co., Ltd.
    Inventor: Jeong Il Oh
  • Patent number: 9998078
    Abstract: A method for an electronic device includes amplifying a signal by a first power amplifier, obtaining a temperature of the first power amplifier during the amplification of the signal, comparing the temperature of the first power amplifier to a predetermined threshold value, and switching the first power amplifier to a second power amplifier for amplifying a signal if the temperature of the first power amplifier is higher than a threshold value. An electronic device for switching power amplifiers are also disclosed.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Ju Lee, Ji-Woo Lee
  • Patent number: 9984698
    Abstract: The invention relates to a method for combining a plurality of audio streams encoded by frequency sub-band encoding, comprising the following steps: decoding (E301) a portion of the encoded streams over at least one frequency sub-band; combining (E302) the streams thus encoded to form a mixed stream; selecting (E303), from among the plurality of encoded audio streams, at least one encoded replication stream, over at least one frequency sub-band that is different from that of the decoding step. The method is such that the selection of the at least one encoded replication stream is carried out according to a criterion which takes into consideration the presence of a predetermined frequency band in the encoded stream (E304). The invention also relates to a device which implements the described method and can be integrated into a conference bridge, a communication terminal or a communication gateway.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: May 29, 2018
    Assignee: Orange
    Inventors: Claude Lamblin, Balazs Kovesi, Arnault Nagle
  • Patent number: 9954494
    Abstract: A method for suppressing POP noise in an audio operation amplifier, comprising: connecting a first resistor and a second resistor in series at an output stage of the audio operation amplifier by turning on a first switch and a second switch; generating, with a ramp generator, a ramp voltage after an audio signal is input into the audio operation amplifier, wherein the ramp voltage varies from zero to a first value; generating, with an voltage generator, a second voltage, wherein a third switch is turned on and a fourth switch is turned off when the ramp voltage reaches the second value; short-circuiting the first and second resistors by turning off the first and second switches; and outputting, with the audio operation amplifier, an amplified audio signal.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: April 24, 2018
    Assignee: BEKEN CORPORATION
    Inventors: Donghui Gao, Jiazhou Liu, Dawei Guo
  • Patent number: 9935596
    Abstract: One embodiment provides an analog front-end circuit. When a chopping signal has a first logical value, a non-inverting instrumentation preamplifier subtracts a second input voltage from a first input voltage and generates a first output voltage by amplifying a subtraction voltage while outputting the second input voltage as a second output voltage. When the chopping signal has a second logical value, the non-inverting instrumentation preamplifier subtracts the first input voltage from the second input voltage and generates the first output voltage by amplifying and then inverting the polarity of a subtraction voltage while outputting the second input voltage as the second output voltage.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: April 3, 2018
    Assignee: NEW JAPAN RADIO CO., LTD.
    Inventor: Yoichi Shimeno
  • Patent number: 9887719
    Abstract: Methods and systems for a configurable low-noise amplifier with programmable band-selection filters may comprise a receiver with a low-noise amplifier (LNA) with first and second input terminals and differential output terminals; a low pass filter operably coupled to the LNA; a high pass filter operably coupled to the second input terminal of the LNA; and a signal source input coupled to the low pass filter and the high pass filter. The LNA may be operable to receive signals in a pass band of the high pass filter and a pass band of the low pass filter. The receiver may be operable to amplify input signals in the pass band of a first filter but not signals in the pass band of the second filter by operably coupling the second to ground.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: February 6, 2018
    Assignee: Maxlinear, Inc.
    Inventors: Raja Pullela, Wenjian Chen, Vamsi Paidi
  • Patent number: 9887712
    Abstract: A wideband front-end device comprises a wideband amplifying module and a plurality of narrow band filters. The wideband amplifying module comprises an input end, a plurality connecting ends and at least one receiving end. A wideband transmitting RF signal can be transmitted to one of the connecting ends from the input end according to the frequency band thereof. Thus, the wideband transmitting RF signal can be divided into several narrow band signals with different frequency bands. Each narrow band signal with different frequency bands is transmitted to different connecting ends and narrow band filters respectively. Therefore, each narrow band filter can be used to filter wideband transmitting RF signal or narrow band signals with different frequency bands respectively to reduce production costs of the wideband front-end device.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 6, 2018
    Assignee: Airoha Technology Corp.
    Inventors: Chien-Kuang Lee, Heng-Chih Lin
  • Patent number: 9853603
    Abstract: Power amplifiers for amplifying a radio frequency signal are provided.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: December 26, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Zhancang Wang
  • Patent number: 9806728
    Abstract: An amplifier circuit includes a sampling circuit and an amplifier connected to an output of the sampling circuit. A feedback capacitor is between an output terminal of the amplifier and an output terminal of the sampling circuit. A quantizer that includes a comparator is configured to quantize a voltage at the output terminal of the sampling circuit according to a comparison of a voltage at the output terminal of the sampling circuit to a voltage at the reference potential terminal of the comparator. The quantizer outputs a digital code according to the voltage comparison. A control circuit receives the digital code from the quantizer and stores the digital code in a register as a cancellation digital code. A digital-analog (D/A) converter outputs an analog signal in accordance with digital codes from the control circuit.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: October 31, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomohiko Sugimoto, Hirotomo Ishii, Kentaro Yoshioka
  • Patent number: 9800357
    Abstract: A platform for audio and electronic music applications where the electronics are implemented as modules, and the modules mount in a cabinet with a common power supply and infrastructure. The platform addresses problems in electrical, mechanical, usability, and power distribution areas, and is suitable for guitar effects, synthesizers, studio equipment, and DJ gear.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: October 24, 2017
    Inventor: John Donald Tillman
  • Patent number: 9698732
    Abstract: A controller may be configured to sequentially apply a plurality of switch configurations of a power converter in order to operate the power converter as a differential output converter to switch a polarity of the output voltage, such that: during a charging phase of the power converter, a power inductor is coupled between one of a first terminal and a second terminal of the power source and one of a first terminal and a second terminal of the output load, during a transfer phase of the power converter, at least one of the plurality of switches is activated in order to couple the power inductor between the second terminal of the power source and one of the first terminal of the output load and the second terminal of the output load, wherein the output voltage is a differential voltage between the first terminal and the second terminal.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: July 4, 2017
    Assignee: Cirrus Logic, Inc.
    Inventors: Siddharth Maru, Eric J. King
  • Patent number: 9671253
    Abstract: The present invention concerns an electronic measurement circuit for measuring a physical parameter. The circuit comprises: a measurement sensor comprising two differential mounted capacitors each comprising a fixed electrode, and a common electrode, common to the two capacitors which is arranged to be movable relative to each fixed electrode of the two capacitors in order to alter the capacitive value of each capacitor when the physical parameter is measured.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: June 6, 2017
    Assignee: EM MICROELECTRONIC MARIN S.A.
    Inventors: Christophe Entringer, Sylvain Grosjean
  • Patent number: 9641134
    Abstract: The invention concerns an amplifier circuit comprising: an amplifier having a first input coupled to an input node of the amplifier circuit via a first resistor and an output coupled to a load via a coupling capacitor, the output being coupled to the first input via a second resistor; and a current ramp generator adapted to supply a current ramp to the first input of the amplifier during a power up phase or power down phase of the amplifier circuit to control the rate of charge or discharge of the coupling capacitor.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 2, 2017
    Assignee: Dolphin Integration
    Inventors: Emmanuel Grand, Sébastien Genevey, Arthur Veith, Paul Giletti
  • Patent number: 9621117
    Abstract: Methods and systems for a configurable low-noise amplifier with programmable band-selection filters may comprise a receiver with a low-noise amplifier (LNA) with differential output terminals; a low pass filter operably coupled to the LNA; a high pass filter operably coupled to the second input terminal of the LNA; and a signal source input coupled to the low pass filter and the high pass filter. The LNA may be operable to receive signals in a pass band of the high pass filter and a pass band of the low pass filter. The receiver may be operable to amplify input signals in the pass band of a first filter but not signals in the pass band of the second filter by operably coupling the second to ground.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: April 11, 2017
    Assignee: MaxLinear, Inc.
    Inventors: Raja Pullela, Wenjian Chen, Vamsi Paidi
  • Patent number: 9595921
    Abstract: Power amplifier having a common input and a plurality of outputs. In some embodiments, a power amplifier can include a plurality of signal paths having a common input node. Each signal path can include a dedicated amplifier stage, and be configured to be capable of amplifying a radio-frequency (RF) signal received at the common input node. The power amplifier can further include a bias selector configured to provide a bias signal to the dedicated amplifier stage of a selected one of the plurality of signal paths to thereby allow amplification of the RF signal through the selected signal path. Such a power amplifier can be implemented in products such as a die, a module, and a wireless device.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: March 14, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventors: Christophe M. Joly, Xiaodong Xu, Eric Joseph Lai
  • Patent number: 9590499
    Abstract: In accordance with an embodiment, a transformer-less drive circuit is provided that includes a switch control network having an output terminal connected to a first switch and another output terminal connected to a second switch. A driver connected to the second switch. In accordance with another embodiment, a method for generating a drive signal is provided that includes charging a first energy storage element to a first voltage level and a second energy storage element to a second voltage level. The charge stored in the second energy storage element is increased so that the second energy storage element stores a voltage at a third voltage level. The terminals of the second energy storage element are alternately connected to a fourth voltage level. The second energy storage element is used to supply or drive a driver.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 7, 2017
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Johan Camiel Julia Janssens
  • Patent number: 9559692
    Abstract: A signal sensing circuit is provided. The signal sensing circuit comprises a first current-to-voltage circuit, a second current-to-voltage circuit and an impedance shifting circuit. The first current-to-voltage circuit converts a first input current into a first voltage that is directly proportional to a first impedance. The second current-to-voltage circuit converts a second input current into a second voltage that is directly proportional to a second impedance. The impedance shifting circuit generates a third voltage according to the first voltage, wherein the first impedance/the second impedance=K(first voltage/third voltage), where K is a real number.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: January 31, 2017
    Assignee: EGALAX_EMPIA TECHNOLOGY INC.
    Inventor: Chin-Fu Chang
  • Patent number: 9553513
    Abstract: A control circuit for switching converter has a chopping amplifier, a sample-hold circuit, a first comparator, an oscillator and a logic circuit. The chopping amplifier generates an amplified error signal based on a reference signal and a feedback signal. The sample-hold circuit generates a sample-hold signal based on the amplified error signal. The first comparator generates a first logic signal based on a comparison result between the sample-hold signal and a current sensing signal representing a current flowing through a power switch in the switching converter. The oscillator generates a clock signal. The logic circuit generates a control signal based on the first logic signal and the clock signal, the control signal is used to control the power switch.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: January 24, 2017
    Assignee: CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD.
    Inventor: Li Xu
  • Patent number: 9531409
    Abstract: The present disclosure includes switched capacitor transmitter circuits and methods. In one embodiment, the present disclosure includes a plurality of switched capacitor transmitter circuits coupled to inputs of an inductive network. The inductive network combines voltages from the switched capacitor transmitter circuits to produce a combined voltage on an output. In another embodiment, a digital data signal is thermometer encoded and a negative thermo-encoded signal is bit order reversed to control capacitors in a switched capacitor transmitter circuit.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: December 27, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Daniel Keyes Butterfield, Peiyuan Wang, Jeremy Darren Dunworth
  • Patent number: 9496906
    Abstract: A receiver comprises a passive gain stage having an input to receive an in-going radio frequency (RF) signal and a gain control signal to produce an adjusted in-going RF signal, a sliced LNA stage comprising a plurality of LNAs coupled to receive the in-going RF signal. Each LNA includes an adjustable source degeneration circuit for receiving a plurality of gain selection and control signals and an output port to produce an amplified in-going RF signal. A mixer is coupled to receive at least one of the amplified in-going RF signals produced by the sliced LNA stage and is configured to produce a converted signal at another frequency. A PGA is coupled to receive the down-converted signal and produces an amplified in-going signal.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: November 15, 2016
    Assignee: SILICON LABORATORIES, INC.
    Inventor: Aslamali A. Rafi
  • Patent number: 9497061
    Abstract: Systems and methods for characterizing an undersampled receiver generally comprise, in one embodiment, providing one or more probe signals to an input of an undersampled receiver. Each of the one or more probe signals has selective frequency components that ensure that aliases in a corresponding output signal of the undersampled receiver are unique. The undersampled receiver is then characterized based on the output signal(s) of the undersampled receiver. The selective frequency components of the one or more probe signals enable un-aliasing of the one or more output signals of the undersampled receiver and, as such, the undersampled receiver can be characterized.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: November 15, 2016
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Bradley John Morris, Somsack Sychaleun
  • Patent number: 9484150
    Abstract: A multi-mode power amplifying circuit, and a multi-mode wireless transmission module and method thereof are provided. The multi-mode wireless transmission module includes the multi-mode power amplifying circuit and an antenna. In the multi-mode power amplifying circuit and the antenna, a first power amplifier is electrically connected between a signal input end and a first impedance matching circuit, and an output end of the first impedance matching circuit is electrically connected to the antenna. A second power amplifier is electrically connected to the signal input end, and a second impedance matching circuit is electrically connected between the second power amplifier and the first impedance matching circuit. A switching circuit is electrically connected to an input end of the second impedance matching circuit. The switching circuit switches on-off corresponding to an operation of the first power amplifier and an operation of the second power amplifier.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: November 1, 2016
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Po-Chih Wang, Ya-Wen Yang
  • Patent number: 9483100
    Abstract: According to at least one example embodiment, a semiconductor device is configured to gate power supply to a hardware component through a transistor coupled to the hardware component. The transistor is operated by a controller in a manner to limit electric current dissipated to the hardware component during a transition period. The controller is configured to gradually turn on, or off, the hardware component during a transition period by controlling at least one input signal to the transistor. Gradual turning on, or off, of the hardware component reduces electric current leakage through the hardware component and diminishes any potential disturbance to a ground reference coupled to the hardware component.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: November 1, 2016
    Assignee: Cavium, Inc.
    Inventors: David A. Carlson, Thucydides Xanthopoulos
  • Patent number: 9473097
    Abstract: A resistive ladder has first, second and third resistors coupled in series between first and second voltage terminals. A first node of the first resistor is coupled to the first voltage terminal and a first node of the third resistor is coupled to the second voltage terminal. A voltage selection unit has a first input coupled to a first node of the second resistor and a second input coupled to a second node of the second resistor and is adapted to selectively couple one of the first and second inputs to an output node of said resistive ladder. The resistive ladder also includes a first switch coupled between a second node of the third resistor and the second voltage terminal.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: October 18, 2016
    Assignee: STMicroelectronics SA
    Inventor: Emmanuel Rouat
  • Patent number: 9438185
    Abstract: Devices and methods for improving reliability of sealable periphery amplifiers is described. Amplifier segments of the sealable periphery architecture can be rotated to distribute wear. Further, extra amplifier segments can be implemented on amplifier dies to extend the overall lifetime of amplifiers.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: September 6, 2016
    Assignee: Peregrine Semiconductor Corporation
    Inventor: Chris Olson
  • Patent number: 9432800
    Abstract: A wireless magnetic field communication system working within the range of less than 1.5 m without induction induced interference during listening mode is proposed. The system comprises at least a transmitter and a receiver. Several novel transmitter designs using either active-connection-control solenoid or spin-orbit torque (SOT) based patterned thin film element(s) are proposed. The system has intrinsic high data security level due to its limited working range, as well as large data transfer rate. The system is suitable to establish a temporary off-the grid magnetic field communication network. It also provides a new data communication approach among modules instead of data cable in industry equipment. The system can be used as a standalone or built-in system for communication between devices or modularized components of a system.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: August 30, 2016
    Inventors: Ge Yi, Jinwen Wang, Dujiang Wan, Shaoping Li
  • Patent number: 9425813
    Abstract: This application relates to analogue-to-digital converters (ADCs). An ADC 200 has a first converter (201) for receiving an analogue input signal (AIN) and outputting a time encode signal (DT), such as a pulse-width-modulated (PWM) signal, based on input signal and a first conversion gain setting (GIN). In some embodiments the first converter has a PWM modulator (401) for generating a PWM signal such that the input signal is encoded by pulse widths that can vary continuously in time. A second converter (202) receives the time encoded signal and outputs a digital output signal (DOUT) based on the time encoded signal (DT) and a second conversion gain setting (GO). The second converter may have a first PWM-to-digital modulator (403). A gain allocation block (204) generates the first and second conversion gain settings based on the time encoded signal (DT).
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: August 23, 2016
    Assignee: Cirrus Logic International Semiconductor Ltd.
    Inventors: John Paul Lesso, Emmanuel Philippe Christian Hardy
  • Patent number: 9425746
    Abstract: A device includes an amplifier circuit comprising a plurality of amplification paths, and at least one switchable bypass capacitance coupled to an associated shared power distribution network, the at least one switchable bypass capacitance and at least one of the plurality of amplification paths responsive to a control signal configured to selectively ground the at least one switchable bypass capacitance and selectively enable the at least one of the amplification paths based on a selected operating mode.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: August 23, 2016
    Assignee: Qualcomm Incorporated
    Inventors: Mehmet Uzunkol, Rui Xu, Ahmed Abdel Monem Youssef, Wingching Vincent Leung, Ehab Ahmed Sobhy Abdel Ghany, Allen He, Sang Hyun Woo, Li-Chung Chang
  • Patent number: 9413377
    Abstract: A switched capacitor circuit with feedback compensation is provided. First terminals of a feedback capacitor and at least one capacitor are coupled to a first input terminal of a differential amplifier. Second terminals of the feedback capacitor and the capacitor are coupled to an input terminal during a first period. A feedback compensation circuit amplifies a first voltage on the first input terminal of the differential amplifier by a gain greater than one to generate a second voltage. The second terminal of the feedback capacitor is coupled to the output terminal of the differential amplifier, and the feedback compensation circuit applies the second voltage to the second terminal of the capacitor during a second period.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: August 9, 2016
    Assignees: LNCKU RESEARCH AND DEVELOPMENT FOUNDATION, HIMAX TECHNOLOGIES LIMITED
    Inventors: Soon-Jyh Chang, Tz-Jing Shau, Chung-Ming Huang
  • Patent number: 9407212
    Abstract: Device and methods for improving consistency of operation and therefore yield of sealable periphery amplifiers is described. Amplifier size of the scalable periphery architecture can be adjusted to obtain part-to-part consistency of operating performance as per a defined/desired set of criteria. Amplifier segments of the scalable periphery architecture can be rotated to distribute wear. Further, extra amplifier segments can be implemented on amplifier dies to extend the overall lifetime of amplifiers.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: August 2, 2016
    Assignee: Peregrine Semiconductor Corporation
    Inventor: Dan William Nobbe
  • Patent number: 9374114
    Abstract: A receiver apparatus includes a receiver path and a blocker detection path. The receiver path includes a down-converting stage. The blocker detection path includes a sensing circuit and a blocker detection circuit. The sensing circuit is arranged to sense a received radio frequency signal which has not yet been processed by the down-converting stage and generate a sensed signal accordingly. The blocker detection circuit is arranged to detect existence of a blocker signal according to the sensed signal and generate a blocker detection result indicative of the existence of the blocker signal when receiving the sensed signal.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: June 21, 2016
    Assignee: MEDIATEK INC.
    Inventors: Tzung-Han Wu, Chinq-Shiun Chiu
  • Patent number: 9350306
    Abstract: According to one embodiment, an amplification circuit includes first and second differential amplification circuits, each having an output connected to an output terminal and a feedback resistor connected between the output and a negative input of the respective differential amplification circuit. The amplification circuit includes a switching circuit that receives a first signal on first input terminal and a second signal on a second input terminal and includes set of switches that is configured to apply the first and second signals to the first and second differential amplification circuits such that in a first switching state an amplified voltage difference of the first and second signals is available between the two output terminals, and in a second switching state an amplified current difference of the first and second signals is available between the two output terminals.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: May 24, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeo Imai, Shinji Nakatsuka
  • Patent number: 9331643
    Abstract: Methods of turning on and/or turning off amplifier segments in a scalable periphery amplifier architecture are described in the present disclosure. The turning on and/or turning off the amplifier segments according to the various embodiments of the present can reduce spectral splatter in adjacent channels. In some embodiments, amplifier performance and efficiency can be improved by dissipating heat more uniformly.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 3, 2016
    Assignee: Peregrine Semiconductor Corporation
    Inventor: Michael P. Gaynor
  • Patent number: 9331696
    Abstract: A signal sensing circuit is provided. The signal sensing circuit comprises a first current-to-voltage circuit, a second current-to-voltage circuit and an impedance shifting circuit. The first current-to-voltage circuit converts a first input current into a first voltage that is directly proportional to a first impedance. The second current-to-voltage circuit converts a second input current into a second voltage that is directly proportional to a second impedance. The impedance shifting circuit generates a third voltage according to the first voltage, wherein the first impedance/the second impedance=K(first voltage/third voltage), where K is a real number.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: May 3, 2016
    Assignee: EGALAX—EMPIA TECHNOLOGY INC.
    Inventor: Chin-Fu Chang
  • Patent number: 9325535
    Abstract: To maintain linear operation of a signal processing circuit, such as a low noise amplifier, a peak detector detects a peak of a signal associated with the signal processing circuit and compares the detected peak signal with a threshold. When the detected peak signal is greater than the threshold, a variable current source biases the signal processing circuit to place the signal processing circuit in a different mode of operation. The signal processing circuit may thereby process a larger input signal while operating in an acceptable linear region.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: April 26, 2016
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: George Khoury
  • Patent number: 9306503
    Abstract: A system for combining power includes a plurality of branches and a secondary winding. The plurality of branches are configured to provide branch power. Each of the branches contribute to the branch power at non-peak power. The secondary winding is configured to combine the branch power from the plurality of branches into an output power.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: April 5, 2016
    Assignee: Intel Corporation
    Inventors: Hongtao Xu, Georgios (Yorgos) Palaskas, Parmoon Seddighrad
  • Patent number: 9306502
    Abstract: System providing switchable impedance transformer matching for power amplifiers. In an exemplary implementation, an amplifier providing switchable impedance matching includes an output inductor (L1) that is part of an output path of the amplifier and a first amplifier stage comprising a first inductor (L4) coupled to the output inductor, the first inductor configured to couple a signal amplified by the first amplifier stage at a first power level to the output inductor in response to a first enable signal. The amplifier also includes a second amplifier stage comprising a second inductor (L5) coupled to the output inductor, the second inductor configured to couple the signal amplified by the second amplifier stage at a second power level to the output inductor in response to a second enable signal.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: April 5, 2016
    Assignee: QUALCOMM Incorporated
    Inventor: Ngar Loong Alan Chan
  • Patent number: 9294073
    Abstract: According to certain aspects, a method includes determining whether to amplify a radio frequency (RF) signal by a first gain achievable by a first circuit or a second gain achievable by a second circuit, amplification of the first and second circuits respectively configured to be turned on or off by first and second switches, the first switch in the on state and the second switch in the off state resulting in the RF signal being amplified by the first gain, and the first switch in the off state and the second switch in the on state resulting in the RF signal being amplified by the second gain; and applying or inducing application of a first bias voltage or a second bias voltage to an isolated well of the first switch upon determination that the RF signal is to be amplified by the first gain or the second gain, respectively.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 22, 2016
    Assignee: Skyworks Solutions, Inc.
    Inventors: David K. Homol, Hua Wang
  • Patent number: 9294290
    Abstract: Optical cable assemblies, optical engines, and methods for transitioning into and out of a sleep mode are disclosed. In one embodiment, a method of operating a sleep mode of an optical cable assembly includes receiving a sleep trigger, and for a time T1, turning a laser of an optical transmit (Tx) lane of an optical transceiver device on or off, and providing a fixed logical high or a fixed logical low on low-speed receive (Rx) line of the optical cable assembly based on a connection state of an electrical connector of the optical cable assembly. The method further includes, after the time T1, turning off the laser of the optical Tx lane, placing one or more components of the optical transceiver device into a low-power state, and periodically transmitting an optical intra-cable signal from the optical transceiver device over optical fiber to a far end of the optical cable assembly.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: March 22, 2016
    Assignee: CORNING OPTICAL COMMUNICATIONS LLC
    Inventors: Mathieu Charbonneau-Lefort, Michael John Yadlowsky
  • Patent number: 9281786
    Abstract: An amplifier circuit with an input power detector and a related method are described. With the input power detector and related control network, the arrangement enables and/or disables a number of unit cells in power amplifiers.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: March 8, 2016
    Assignee: Peregrine Semiconductor Corporation
    Inventor: David Kovac
  • Patent number: 9276527
    Abstract: Methods of turning on and/or turning off amplifier segments in a scalable periphery amplifier architecture are described in the present disclosure. The turning on and/or turning off the amplifier segments according to the various embodiments of the present can reduce spectral splatter in adjacent channels. In some embodiments, amplifier performance and efficiency can be improved by dissipating heat more uniformly.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: March 1, 2016
    Assignee: Peregrine Semiconductor Corporation
    Inventor: Michael P. Gaynor
  • Patent number: 9257947
    Abstract: A semiconductor device includes a power amplifier for amplifying RF signals in multiple frequency bands, an output matching circuit connected to an output of the power amplifier, a first capacitor connected at a first end to an output of the output matching circuit, multiple output paths, a switch connected to a second end of the first capacitor and directing each of the RF signals to a respective one of the output paths in accordance with frequency band of the each of the RF signals, and multiple second capacitors. Each second capacitor is connected in series to a respective one of the output paths. The switch and either the first capacitor or the second capacitors, or both the first and second capacitors, are integrated as a single monolithic microwave integrated circuit.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: February 9, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenichi Horiguchi, Masakazu Hirobe, Satoshi Miho, Yoshinobu Sasaki, Kazuya Yamamoto
  • Patent number: 9257942
    Abstract: An audio amplifier apparatus for driving a loudspeaker is provided. The audio amplifier apparatus includes a soft charge unit, a first amplification module, and a second amplification module. The soft charge unit is coupled to the loudspeaker through an output terminal and supplies a driving current according to a first control signal to soft charge the loudspeaker, so as to gradually increase a voltage level on the output terminal. The first amplification module receives an audio signal according to the first control signal and amplifies the audio signal to output a first amplified signal for driving the loudspeaker. The second amplification module receives the audio signal according to a second control signal and amplifies the audio signal to output a second amplified signal for driving the loudspeaker. The soft charge unit generates the second control signal by comparing the voltage level on the output terminal with a predetermined voltage level.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: February 9, 2016
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Yi-Lung Chen, Hsin-Chieh Huang