Combined With Automatic Amplifier Disabling Switch Means Patents (Class 330/51)
  • Patent number: 10778150
    Abstract: Disclosed herein are signal amplifiers having a plurality of amplifier cores. Individual amplifier cores can be designed for particular gain modes to enhance particular advantages while reducing other disadvantages. The signal amplifier can then switch between amplifier cores when switching gain modes to achieve desired performance characteristics (e.g., improving noise figure or linearity). Examples of signal amplifiers disclosed herein include amplifier architectures with a high gain amplifier core that reduces the noise figure and a linearity boost amplifier core that increases linearity (e.g., for lower gain modes). The disclosed signal amplifiers have a first active core with amplification chains for each of a plurality of inputs and a second active core with a single amplification chain to amplify signals received at the plurality of inputs.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: September 15, 2020
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Junhyung Lee, Johannes Jacobus Emile Maria Hageraats, Joshua Haeseok Cho, Aravind Kumar Padyana, Bipul Agarwal
  • Patent number: 10673401
    Abstract: An LNA having a plurality of paths, each of which can be controlled independently to achieve a gain mode. Each path includes at least an input FET and an output FET coupled in series. A gate of the output FET is controlled to set the gain of the LNA. Signals to be amplified are applied to the gate of the input FET. Additional stacked FETs are provided in series between the input FET and the output FET.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: June 2, 2020
    Assignee: pSemi Corporation
    Inventors: Emre Ayranci, Miles Sanner
  • Patent number: 10601377
    Abstract: Methods and systems for optimizing amplifier operations are described. The described methods and systems particularly describe a feed-forward control circuit that may also be used as a feed-back control circuit in certain applications. The feed-forward control circuit provides a control signal that may be used to configure an amplifier in a variety of ways.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: March 24, 2020
    Assignee: pSemi Corporation
    Inventors: Dan William Nobbe, David Halchin
  • Patent number: 10554188
    Abstract: Systems and methods for suppressing transient outputs from an amplifier system are provided. An amplifier having a plurality of bias levels may be controlled to initiate a change in the level of a bias signal provided to the amplifier. The level of the bias signal is ramped from an initial bias level to a final bias level over numerous steps. The steps include at least one step in which the level of the bias signal is between the initial bias level and the final bias level. An amplifier system having multiple stages may be controlled to enable each stage and selectively couple each stage in a sequence that couples an output stage to an output terminal at the completion of the sequence.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: February 4, 2020
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Adrian John Bergsma, Thomas Obkircher, Peihua Ye, Bang Li Liang, Peter Harris Robert Popplewell, William J. Domino
  • Patent number: 10547919
    Abstract: The Ethernet switch for an optic fiber network includes: a first light emitter designed to transmit a light signal in the optic fiber, first photodetector configured to transform a light signal coming from the optic fiber into an electric signal, at least one communication port of electric signals with a terminal, a power supply circuit configured to supply power to the light emitter and to the first photodetector, a wake-up circuit connected to the first photodetector and to the communication port configured to generate an electric wake-up signal on receipt of a light signal by the first photodetector and/or of an electric signal on the communication port, the wake-up circuit being connected to the power supply circuit to trigger power supply of the first light emitter and of the communication port.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: January 28, 2020
    Assignee: IFOTEC
    Inventors: Gilles Billet, Christian Sillans, Michaël Masselot
  • Patent number: 10506338
    Abstract: This application relates to methods and apparatus for monitoring the operating state of an audio circuit, and in particular for detecting a defective operating state, as may occur after an Electrical Over-Stress (EOS) event. An audio circuit (210) has an input node (103) for receiving an input audio signal (SIN) and an output node (104) for outputting an output audio signal (AOUT) for driving an audio load. A monitoring module (202) receives a first signal (S1) derived from the output audio signal and a second signal (S2) indicative of the input audio signal. The monitoring module (202) monitors the first signal (S1) with respect to the second signal (S2) to determine whether at least one parameter of the first signal corresponds to an expected parameter value based on the indication of input audio signal. If the parameter does not correspond to the expected parameter value, the monitoring module (202) outputs an indication (CTRL) of a defective operating state of the audio circuit (201).
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: December 10, 2019
    Assignee: Cirrus Logic, Inc.
    Inventor: Andrew James Howlett
  • Patent number: 10491164
    Abstract: A receiver front end capable of receiving and processing intraband non-contiguous carrier aggregate (CA) signals using multiple low noise amplifiers (LNAs) is disclosed herein. A cascode having a “common source” configured input FET and a “common gate” configured output FET can be turned on or off using the gate of the output FET. A first switch is provided that allows a connection to be either established or broken between the source terminal of the input FET of each LNA. Further switches used for switching degeneration inductors, gate capacitors and gate to ground caps for each legs can be used to further improve the matching performance of the invention.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: November 26, 2019
    Assignee: pSemi Corporation
    Inventors: Emre Ayranci, Miles Sanner
  • Patent number: 10461708
    Abstract: A signal amplifier includes a first amplifier, a second amplifier, and an output. The first amplifier amplifies a first input signal to form a first amplified output signal. The first input signal has a common mode voltage in a first voltage range, and the first amplified output signal has a common mode voltage in a second voltage range different from the first voltage range. The second amplifier amplifies a second input signal to form a second amplified output signal. The first input signal has the common mode voltage in the second voltage range and the second amplified output signal has the common mode voltage in the second voltage range. The output outputs the first amplified output signal or the second amplified output signal as an amplified output signal.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: October 29, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Soo Min Lee
  • Patent number: 10452120
    Abstract: [Object] To provide a communication device, an information processing device, and a communication method. [Solution] A communication device including: a detector configured to detect an optical signal and convert the optical signal to an electric signal; a data processing unit configured to process the electric signal converted by the detector to acquire data; and a controller configured to control an operating state including a standby state in which the data processing unit is deactivated to reduce power consumption and an active state in which the data processing unit is capable of executing acquisition of the data on a basis of the optical signal detected by the detector, in which the detector detects the optical signal in the standby state.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: October 22, 2019
    Assignee: SONY CORPORATION
    Inventors: Ryohei Takahashi, Kazuaki Toba, Toshihisa Hyakudai, Hiroshi Morita
  • Patent number: 10425051
    Abstract: An analog multiplexer core circuit (120A) includes a differential pair (121) that includes two transistors (Q1, Q2), a differential pair (122) that includes two transistors (Q3, Q4), a differential pair (123) that includes two transistors (Q5, Q6), and a constant current source (124) that causes a current (IEE) to flow. This analog multiplexer core circuit (120A) time-multiplexes two analog signals (Ain1, Ain2) and outputs a time-multiplexed analog signal (Aout). Each emitter resistor (REA1, REA2, REA3, REA4) is connected to a corresponding one of the transistors (Q1, Q2, Q3, Q4). At this time, a relation of “REA·IEE?the amplitude of an input analog signal” is satisfied. As a result, linearity of response can be ensured by expanding the linear response input range of the differential pairs (121, 122).
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: September 24, 2019
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Munehiko Nagatani, Hideyuki Nosaka
  • Patent number: 10411658
    Abstract: An amplifier amplifies an input signal. A splitter branches an output signal of the amplifier into a first signal path and a second signal path and performs impedance conversion of the first and second signal paths. A first output terminal outputs the output signal of the amplifier or a signal obtained by branching the output signal of the amplifier into the first signal path by the splitter. A second output terminal outputs the output signal of the amplifier or a signal obtained by branching the output signal of the amplifier into the second signal path by the splitter. An output controller switches whether the output signal of the amplifier is output from the first output terminal, is output from the second output terminal, or is branched by the splitter to be output from both the first and second output terminals.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: September 10, 2019
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventors: Toshiki Seshita, Yasuhiko Kuriyama
  • Patent number: 10396737
    Abstract: Amplifier systems and methods are provided that include a fixed gain amplification stage coupled to an adjustable attenuation stage further coupled to a variable gain amplification stage. A controller controls an amount of attenuation provided by the adjustable attenuation stage and an amount of gain provided by the variable gain amplification stage to maintain any of various noise, efficiency, and/or linearity requirements of the amplifier system.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: August 27, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: William J. Domino, Thomas Obkircher, Adrian John Bergsma, Peihua Ye
  • Patent number: 10389305
    Abstract: Disclosed herein are signal amplifiers having a plurality of amplifier cores. Individual amplifier cores can be designed for particular gain modes to enhance particular advantages while reducing other disadvantages. The signal amplifier can then switch between amplifier cores when switching gain modes to achieve desired performance characteristics (e.g., improving noise figure or linearity). Examples of signal amplifiers disclosed herein include amplifier architectures with a high gain amplifier core that reduces the noise figure and a linearity boost amplifier core that increases linearity (e.g., for lower gain modes). The disclosed signal amplifiers can also have switchable reference biases to provide targeted bias current matching. The disclosed signal amplifiers can also include degeneration switching blocks for individual amplifier cores to improve signal linearity.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: August 20, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Junhyung Lee, Johannes Jacobus Emile Maria Hageraats, Joshua Haeseok Cho, Aravind Kumar Padyana, Bipul Agarwal
  • Patent number: 10367474
    Abstract: A switching circuit is provided. The switching circuit includes at least one Surface Acoustic Wave (SAW) filter, a Single-Pole n Throw (SPnT) switch connected to an input port of each of the at least one SAW filter, and a Dual-Pole n Throw (DPnT) switch connected to an output port of each of the at least one SAW filter.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: July 30, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chang-Joon Park
  • Patent number: 10365308
    Abstract: A power detector with a detection signal input connectable to a source of a radio frequency signal and a detected power level output has a differential amplifier detector circuit with an input connected to the detection signal input and an output corresponding to the detected power level output. A feedback network is connected to the input and the output of the differential amplifier detector circuit. A mirror circuit is connected to the differential amplifier detector circuit. A root mean square current corresponding to a power level of the radio frequency signal from the source is mirrored and integrated, with a direct current voltage level being generated therefrom and output to the detected power level output.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: July 30, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Lisette L. Zhang, Oleksandr Gorbachov, Lothar Musiol
  • Patent number: 10326409
    Abstract: A device includes a substrate and a package input terminal. The device includes a driver amplifier mounted to the substrate and configured to receive a radio frequency input signal. A first amplifier is mounted to the substrate. The first amplifier includes a first amplifier input terminal. A second amplifier is mounted to the substrate. The second amplifier includes a second amplifier input terminal. An inter-stage network is connected between the driver amplifier and the first amplifier and between the driver amplifier and the second amplifier. The inter-stage network includes a first capacitor connected between the driver amplifier and the first amplifier input terminal, and an inductor having a first terminal and a second terminal. The first terminal of the inductor is connected to the first capacitor. The inter-stage network includes a second capacitor connected between the second terminal of the inductor and the second amplifier input terminal.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: June 18, 2019
    Assignee: NXP USA, Inc.
    Inventor: Igor Blednov
  • Patent number: 10320495
    Abstract: A method of characterizing the performance of the payload of a satellite in orbit is executed with the aid of a test ground station including first radio-frequency amplification means and a radio-frequency transmit ground antenna. The method includes a step of providing first amplification means that can be configured to generate at the input of the transmit ground antenna a wide-band test thermal noise the power spectral density of which can be adjusted to a test thermal noise reference power spectral density Dref so that the ratio of the test thermal noise spectral density received at the input of the transponder and that corresponds to it to the thermal noise floor spectral density generated by the satellite alone internally and the natural thermal noise of the Earth is greater than or equal to a first threshold Ds1 equal to 10 dB. An IOT system is configured to execute the method.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: June 11, 2019
    Assignee: THALES
    Inventors: Stéphane-Olivier Tessandori, Emmanuel Bousquet, Arnaud-Damien Durand
  • Patent number: 10305434
    Abstract: A front end circuit includes a bypass circuit comprising a first bypass switch and a second bypass switch configured to bypass a signal to a first terminal according to switching operations of the first bypass switch and the second bypass switch; and an amplifier connected in parallel to the bypass circuit and configured to amplify the signal.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: May 28, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Sang Hee Kim
  • Patent number: 10298187
    Abstract: Certain aspects of the present disclosure provide a switch architecture for switching between a low power amplifier and a high power amplifier. One example amplification system includes a high power amplifier and a low power amplifier. The amplification system further includes a first switch coupled between the high power amplifier and an output. The amplification system further includes a second switch coupled between the output and a reference potential. The second switch is further coupled between the low power amplifier and the output and configured to selectively couple the low power amplifier to the output. The amplification system further includes a third switch coupled between the low power amplifier and the second switch.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: May 21, 2019
    Assignee: QUALCOMM Incorporated
    Inventor: Jeremy Goldblatt
  • Patent number: 10284151
    Abstract: A receiver front end capable of receiving and processing intraband non-contiguous carrier aggregate (CA) signals using multiple low noise amplifiers (LNAs) is disclosed herein. A cascode having a “common source” input stage and a “common gate” output stage can be turned on or off using the gate of the output stage. A first switch is provided that allows a connection to be either established or broken between the source terminal of the input stage of each cascode. Further switches used for switching degeneration inductors, gate/sources caps and gate to ground caps for each legs can be used to further improve the matching performance of the invention.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: May 7, 2019
    Assignee: pSemi Corporation
    Inventors: Hossein Noori, Chih-Chieh Cheng
  • 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: 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: 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