Phase Shift Means In Loop Path Patents (Class 330/107)
  • Patent number: 10256522
    Abstract: A vertical combiner for an overlapping linear phased array is provided. The vertical vector combiner enables two strip-line signals from different layers to be combined, or divided, by vertical transitions between substrate layers and produce a desired output signal phase. The combiner can terminate in a short to act as an antenna. In an antenna application, the antenna provides multiple substrate layers for each strip-line signal, each having a metal ground plane. The ground planes are be coupled by vertical transitions access enabling a stepped ground within the structure which increases bandwidth. The multi-layer combiner architecture enables integration with phased array feed networks for millimeter wave phased array antennas.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: April 9, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wenyao Zhai, Vahid Miraftab
  • Patent number: 10250200
    Abstract: The present disclosure is directed to a dual output path LNA that can be used to break the tradeoff between the output impedance and linearity of an LNA without the problems of a programmable output impedance LNA. In an embodiment, the dual output path architecture includes an LNA driving a low level of impedance in a low voltage gain path, thus achieving high linearity in the presence of large blockers, and driving a high level of impedance in a high voltage gain path to increase the LNA's voltage gain and minimize performance degradation due to a noisier, low power receiver front-end chain following the LNA. The present disclosure is further directed to a local oscillator (LO) offset circuit with low power and reduced spur generation.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: April 2, 2019
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Valentina Della Torre, Seema B. Anand, Howard Chi, Matteo Conta
  • Patent number: 10222407
    Abstract: A sensor arrangement (10) comprises an amplifier (11) having a signal input (12) to receive an input signal (SIN) and a signal output (13) to provide an amplified sensor signal (SOUT) that is an inverted signal with respect to the input signal (SIN). Furthermore, the sensor arrangement (10) comprises a feedback path connecting the signal output (13) to the signal input (12), wherein the feedback path comprises a series connection of a capacitive sensor (14) and a feedback capacitor (15). A voltage source arrangement (19) of the sensor arrangement (10) is connected to a feedback node (18) between the capacitive sensor (14) and the feedback capacitor (15).
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: March 5, 2019
    Assignee: ams AG
    Inventor: Matthias Steiner
  • Patent number: 10211787
    Abstract: Embodiments of circuits for use with an amplifier that includes multiple amplifier paths include a first circuit and a second circuit in parallel with the first circuit. The first circuit includes a first input coupled to a first power divider output, a first output coupled to a first amplifier path of the multiple amplifier paths, and a first adjustable phase shifter and a first attenuator series coupled between the first input and the first output. The second circuit includes a second input coupled to a second power divider output, a second output coupled to a second amplifier path of the multiple amplifier paths, and a second adjustable phase shifter coupled between the second input and the second output.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: February 19, 2019
    Assignee: NXP USA, INC.
    Inventors: Abdulrhman M. S. Ahmed, Mario M. Bokatius, Paul R. Hart, Joseph Staudinger, Richard E. Sweeney
  • Patent number: 10205438
    Abstract: According to one embodiment, a compact low-power receiver comprises first and second analog circuits connected by a digitally controlled interface circuit. The first analog circuit has a first direct-current (DC) offset and a first common mode voltage at an output, and the second analog circuit has a second DC offset and a second common mode voltage at an input. The digitally controlled interface circuit connects the output to the input, and is configured to match the first and second DC offsets and to match the first and second common mode voltages. In one embodiment, the first analog circuit is a variable gain control transimpedance amplifier (TIA) implemented using a current mode buffer, the second analog circuit is a second-order adjustable low-pass filter, whereby a three-pole adjustable low-pass filter in the compact low-power receiver is effectively produced.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: February 12, 2019
    Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
    Inventors: Mohyee Mikhemar, Amir Hadji-Abdolhamid, Hooman Darabi
  • Patent number: 10197638
    Abstract: A high bandwidth Hall sensor includes a high bandwidth path and a low bandwidth path. The relatively high offset (from sensor offset) of the high bandwidth path is estimated using a relatively low offset generated by the low bandwidth path. The relatively high offset of the high bandwidth path is substantially reduced by combining the output of the high bandwidth path with the output of the low bandwidth path to generate a high bandwidth, low offset output. The offset can be further reduced by including transimpedance amplifiers in the high bandwidth sensors to optimize the frequency response of high bandwidth Hall sensor.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: February 5, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Arup Polley, Srinath Ramaswamy, Baher S. Haroun, Rajarshi Mukhopadhyay
  • Patent number: 10146245
    Abstract: An I-V converting module includes: a current output sensor, an I-V transforming circuit, a sampling and holding circuit, a source follower, a loop switch, and a bypass circuit. A drain of the source follower is connected to an input/output end of the sampling and holding circuit. A source of the source follower is connected to an input end of the I-V transforming circuit and an output end of the current output sensor, and a gate of the source follower is connected to an output end of the I-V transforming circuit via the loop switch, and to the bypass circuit. When the loop switch is closed and the bypass circuit is disabled, a feedback loop formed by the source follower, the I-V transforming circuit and the loop switch is conducted, and the I-V converting module enters into a sampling setup stage.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: December 4, 2018
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventor: Mengwen Zhang
  • Patent number: 10116262
    Abstract: A front-end amplifier circuit for receiving a biological signal includes a signal channel. The signal channel amplifies the biological signal to generate a detection current and includes a capacitive-coupled transconductance amplifier. The capacitive-coupled transconductance amplifier amplifies the biological signal with a transconductance gain to generate a first current.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: October 30, 2018
    Assignee: WINBOND ELECTRONICS CORP.
    Inventors: Chung-Yu Wu, Ya-Syuan Sung
  • Patent number: 10097162
    Abstract: Embodiments of an apparatus are disclosed. In an embodiment, a power receiver unit is disclosed. The power receiver unit includes a power pick-up unit, a communication modulator, and a filter. The power pick-up unit receives a wireless power signal. The communication modulator applies a modulation to the received wireless power signal. The filter suppresses a load signal from a load of the wireless charge receiver to prevent interference with the modulation.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: October 9, 2018
    Assignee: NXP B.V.
    Inventors: Patrick Niessen, Rene Geraets
  • Patent number: 10097138
    Abstract: Embodiments of a Doherty amplifier device are provided, including a first amplifier stage having a first gain; a second amplifier stage having a second gain that is less than the first gain; and an input power splitter coupled to inputs of the first and second amplifier stages, wherein the input power splitter includes either an inductive element, a capacitive element, or both coupled between the inputs of the first and second amplifier stages, and a resistive element coupled to the input of the second amplifier stage, the input power splitter respectively delivers first and second power levels to inputs of the first and second amplifier stages, and the resistive element is configured to tune gain linearity of the Doherty amplifier device by increasing the second power level to be greater than the first power level, based on a ratio of the second gain to the first gain.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: October 9, 2018
    Assignee: NXP USA, Inc.
    Inventor: Igor Blednov
  • Patent number: 10097396
    Abstract: A direct conversion wireless transmitter includes IQ mismatch pre-compensation using direct learning adaptation to adjust IQ pre-compensation filtering. Widely-linear IQ_mismatch pre-compensation filtering compensates for IQ mismatch in the TX analog chain, filtering of input data x(n) to provide pre-compensated data y(n) with a compensation image designed to interfere destructively with the IQ_mismatch image. A feedback receiver FBRX captures feedback data z(n) used for direct learning adaptation. DL adaptation adjusts IQ_mismatch filters, modeled as an x(n)_direct and complex conjugate x(n)_image transfer functions w1 and w2, including generating an adaptation error signal based on a difference between TX/FBRX-path delayed versions of x(n) and z(n), and can include estimation and compensation for TX/FBRX phase errors. DL adaptation adjusts the IQ pre-comp filters w1/w2 to minimize the adaptation error signal. Similar modeling can be used for IQ mismatch.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: October 9, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Charles K. Sestok, IV
  • Patent number: 10041811
    Abstract: A high bandwidth Hall sensor includes, for example, a Hall element for generating a first polarity Hall-signal output current. An amplifier receives, at a first input, the first polarity Hall-signal output current and outputs a feedback current of a second polarity opposite the first polarity in response. The feedback current is coupled to the first input, and the feedback current suppresses an instantaneous voltage generated by the first polarity first Hall element output current at the first input. In an embodiment, the feedback current suppresses the instantaneous voltage generated by first polarity Hall element output current such that the effects of the Hall element source impedance are reduced.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 7, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Arup Polley, Srinath Ramaswamy, Baher S. Haroun, Rajarshi Mukhopadhyay
  • Patent number: 9979358
    Abstract: The present invention is directed to electrical circuits. More specifically, an embodiment of the present invention provides a differential amplifier in cascode configuration. An input transistor is coupled to an output transistor via a peaking inductor. The output transistor is also directly coupled to a degeneration resistor. There are other embodiments as well.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 22, 2018
    Assignee: INPHI CORPORATION
    Inventors: Leonardo Vera, Carl Pobanz, James Hoffman
  • Patent number: 9973200
    Abstract: Methods and apparatus include and amplifier circuit and a first capacitor branch including a first plurality of capacitors. The first capacitor branch couples to an input signal and to an input of the amplifier circuit. A second capacitor branch includes a second plurality of capacitors. The second capacitor branch couples to the input of the amplifier circuit and to an output of the amplifier circuit.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: May 15, 2018
    Assignee: Cypress Semiconductor Corporation
    Inventors: Jaskarn Singh Johal, Erhan Hancioglu, Renee Leong, Harold M. Kutz, Eashwar Thiagarajan, Onur Ozbek
  • Patent number: 9954497
    Abstract: Circuits for low noise amplifiers with interferer reflecting loops are provided. In some embodiments, circuits for a low noise amplifier with an interferer reflecting loop are provided, the circuits comprising: a low noise amplifier (LNA) having an input and an output; a buffer having an input coupled to the output of the LNA and an output; and notch filter having an input coupled to the output of the buffer and an output coupled to the input of the LNA.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: April 24, 2018
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Jianxun Zhu, Peter R. Kinget, Harish Krishnaswamy
  • Patent number: 9941910
    Abstract: A system that incorporates teachings of the subject disclosure may include, for example, a controller that determines a radiated throughput for at least one of an uplink throughput or a downlink throughput of the communication device, reduces transmit power for the communication device responsive to the radiated throughput satisfying a predetermined throughput range, and tunes a matching network of the communication device responsive to the radiated throughput not satisfying the predetermined throughput range. Other embodiments are disclosed.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: April 10, 2018
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, Joseph Caci, Keith R. Manssen
  • Patent number: 9935614
    Abstract: Multi-state radio frequency (RF) attenuator configurations that include bridged-T type, pi-type, and T-type structures each having a programmable throughput section and a coupled programmable shunt section. The throughput sections and shunt sections may be configured in various combinations of parallel and serial fixed or selectable resistance elements such that multiple resistance states and impedance matching states can be programmatically selected, and may include stacked switch elements to withstand applied voltages to a specified design level.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: April 3, 2018
    Assignee: pSemi Corporation
    Inventor: Ravindranath Shrivastava
  • Patent number: 9917721
    Abstract: Methods, systems, and apparatus for receiving an input signal, where the input signal includes a carrier signal modulated with a first modulation signal and a second modulation signal, and where the second modulation signal is a TM signal. Demodulating the first modulation signal from the input signal. Modulating an un-modulated carrier signal with the first modulation signal to generate a third signal, where the third signal includes the carrier signal modulated by the first modulation signal. And, removing the first modulation signal from the input signal by subtracting the third signal from the input signal to extract the TM signal from the input signal.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: March 13, 2018
    Assignee: TM IP Holdings, LLC
    Inventor: Richard C. Gerdes
  • Patent number: 9912294
    Abstract: An amplifier includes an amplifier input and an amplifier output. A compensation network is coupled to the amplifier output. The compensation network includes at least one RC network tuned to a frequency in which the amplifier operates. The compensation network provides at least one zero to compensate for at least one pole introduced by a load coupled to the amplifier output.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: March 6, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Srinivas K. Pulijala, Steven G. Brantley
  • Patent number: 9891762
    Abstract: A touch screen device includes a touch screen panel including Tx lines, Rx lines, and touch sensors formed at crossings of the Tx lines and Rx lines; a Tx driving circuit for supplying a driving pulse to the Tx lines; and an Rx driving circuit for sampling charge variations of the touch sensors, which are received through the Rx lines, and converting the received charge variations into touch raw data, wherein the Rx driving circuit includes: a noise filter that removes noise of signals received from the Rx line; an integrator that accumulates the charge variations passing through the noise filter; a sampling circuit that samples the accumulated charge variation of the integrator; and an analog to digital converter that converts the charge variation sampled by the sampling circuit into the touch raw data, the noise filter being a biquad bandpass filter including variable resistors and variable capacitors.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: February 13, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sangyong Lee, Hyeongwon Kang
  • Patent number: 9887674
    Abstract: A multi-stage amplifier, comprising a first amplifier stage is presented. The output of the first amplifier stage is coupled to a first terminal of a capacitor having a controllable capacitance. The input of a second amplifier stage is coupled to the output of the first amplifier stage and the first terminal of the capacitor. The output of the second amplifier stage is coupled to a second terminal of the capacitor and an output of the multi-stage amplifier. The input of a current sensing circuit is coupled with the output of the multi-stage amplifier. A control signal generator is coupled between the output of the current sensing circuit and a control terminal of the capacitor. The control signal generator provides a control signal to the capacitor in order to control or vary the capacitance of the capacitor.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: February 6, 2018
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Carlos Zamarreno Ramos, Ambreesh Bhattad, Frank Kronmueller
  • Patent number: 9871489
    Abstract: An arrangement and method for radio-frequency (RF) high power generation which compensate for a failed power amplifier module includes at least one power combiner having RF inputs and at least one RF output, and at least two power amplifier modules electrically connected to a respective input by at least one transmission line, and at least one RF switch formed by the at least one transmission line with a complex load electrically connected to the at least one RF switch.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: January 16, 2018
    Assignees: Siemens Aktiengesellschaft, OOO SIEMENS
    Inventors: Evgeny Ivanov, Andrey Krasnov, Alexander Smirnov, Marcus Zerb
  • Patent number: 9866237
    Abstract: Disclosed examples include switched capacitor integrator circuits including an amplifier, a feedback capacitor, a sampling capacitor, a loading capacitor and a switching circuit, along with a controller that operates the switching circuit to sample an input signal to the sampling capacitor during a sample portion of a given sample and hold cycle, to couple the sampling capacitor to an amplifier input during a first hold portion of each sample and hold cycle, and to couple the sampling capacitor and the loading capacitor to the amplifier input in a second hold portion of each sample and hold cycle to reduce the bandwidth and power consumption by the integrator circuit.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: January 9, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Rajavelu Thinakaran, Sumit Dubey
  • Patent number: 9859990
    Abstract: A system and/or method is provided for enhanced listening of audio signals acquired via a telecoil by performing hum filtering. The system may include a telecoil and a telecoil hum filter. The telecoil hum filter may include a comb notch filter. The comb notch filter may include a delay module and a comb notch filter summing module. The telecoil may be operable to receive a magnetic signal and convert the magnetic signal to an input audio signal. The delay module of the comb notch filter may be configured to generate a delayed signal by applying a delay to the input audio signal. The delay may be based on a fundamental hum frequency. The comb notch filter summing module may be configured to generate a comb notch filter output signal by adding the input audio signal and the delay signal.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: January 2, 2018
    Assignee: ETYMOTIC RESEARCH, INC.
    Inventor: Stephen D. Julstrom
  • Patent number: 9813028
    Abstract: an amplifier amplifies electrical power of signals. A calculating unit calculates a cumulative value for each of first samples and second samples, between which a difference in electrical power or phase is within a first range, in a first sample group and a second sample group corresponding to a first signal that is a signal before amplification in the amplifier and a second signal that is a signal after amplification in the amplifier. Then, the calculating unit calculates, by using the calculated cumulative value, a phase difference between the first signal and the second signal. The correction unit corrects the phase difference by using a correction amount calculated from the phase difference. The updating unit updates, by using the first signal and the second signal of which the phase difference is corrected, a distortion compensation coefficient that is used to compensate nonlinear distortion generated in the amplifier.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: November 7, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Satoshi Matsubara, Hideharu Shako
  • Patent number: 9811058
    Abstract: Disclosed are an apparatus and a method for controlling a signal such that a PLC input signal is equalized to a reference input signal. The apparatus includes an error calculation unit to calculate an error by using the PLC input signal and the reference input signal; an estimation parameter calculation unit to calculate an estimation parameter by using the reference input signal, the PLC input signal and the error; and an error correction unit to correct the error by using the estimation parameter such that the PLC input signal is equalized to the reference input signal.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: November 7, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jung Wook Kim
  • Patent number: 9806703
    Abstract: A single-ended to differential conversion circuit for converting an input signal into a pair of differential signals is provided. An amplifier includes an inverting input terminal, a non-inverting input terminal for receiving a reference signal, and an output terminal. A first resistor is coupled between the inverting input terminal and the output terminal of the amplifier. A second resistor is coupled to the inverting input terminal of the amplifier. The third resistor is coupled to the output terminal of the amplifier. The resistor string is coupled between the output terminal of the amplifier and the second resistor, and includes a fourth resistor and a fifth resistor connected in series. A signal of the pair of differential signals is provided via the third resistor, and another signal of the pair of differential signals is provided via the resistor string.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: October 31, 2017
    Assignee: MEDIATEK INC.
    Inventors: Yu-Hsin Lin, Tze-Chien Wang
  • Patent number: 9762274
    Abstract: An apparatus includes an elliptical inductance-capacitance (LC) filter and a resistive-capacitive (RC) notch filter serially coupled to the elliptical LC filter. The elliptical LC filter and the RC notch filter are configured to filter a radio-frequency (RF) signal received by a feedback receive path.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: September 12, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Shailesh Shekhar Rai, Mahim Ranjan, Jeremy Mark Goldblatt, Frederic Bossu, Vijay Chellappa
  • Patent number: 9721504
    Abstract: Discussed are a current sensing circuit capable of compensating for degradation of an organic light emitting diode by sensing a current of the organic light emitting diode, and an organic light emitting diode display having the same. The current sensing circuit according to an embodiment includes a plurality of sensing modules configured to sense a pixel current from a display panel having an organic light emitting diode on each of a plurality of pixels, and to output a sensing voltage according to a sensing result; and an analog-to-digital converter configured to convert the sensing voltage into an analog-to-digital voltage, and to output sensing data.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: August 1, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: SangYun Kim, JunHyeok Yang
  • Patent number: 9711942
    Abstract: A laser apparatus includes a semiconductor laser of which a drive condition is controlled according to a plurality of types of drive currents and a controller which controls the drive condition such that a sum of the drive currents is equal to or less than a predetermined threshold value.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: July 18, 2017
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventor: Hiroki Kanesaka
  • Patent number: 9705465
    Abstract: A control apparatus is provided that can provide high dynamic resolution and is suitable for inclusion within an integrated circuit. The control apparatus receives a demand signal representing a desired value of a measurand, and a feedback signal representing a present value or a recently acquired value of the measurand. The processing circuit forms a further signal a further signal which is a function of the demand and feedback signals. The further signal is then subjected to at least an integrating function. The demand signal, feedback signal or the further signal is processed or acquired in a sampled manner. The use of such sampled, i.e. discontinuous, processing allows integration time constants to be synthesized which would otherwise require the use of unfeasibly large components within an integrated circuit, or the use of off-chop components. Both of these other options are expensive.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: July 11, 2017
    Assignee: ANALOG DEVICES GLOBAL
    Inventors: Rares Andrei Bodnar, Patrick Joseph Pratt, Donal Bourke, Peter James Tonge
  • Patent number: 9692361
    Abstract: A two-way Doherty amplifier for amplifying a modulated or non-modulated carrier signal, said carrier signal having a carrier frequency; wherein the Doherty amplifier comprises a first amplifier having a first amplifier output node, a second amplifier having a second amplifier output node, a combining node connected or connectable to a load, a first amplifier output line connecting the first amplifier output node to the combining node, and a second amplifier output line connecting the second amplifier output node to the combining node, and wherein the first amplifier output line has an electrical length of substantially one quarter wavelength of the carrier signal and the second amplifier output line has an electrical length of substantially one half wavelength of the carrier signal.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: June 27, 2017
    Assignee: NXP USA, INC.
    Inventor: Igor Blednov
  • Patent number: 9685907
    Abstract: A variable-gain power amplifying technique includes generating, with a network of one or more reactive components included in an oscillator, a first oscillating signal, and outputting, via one or more taps included in the network of the reactive components, a second oscillating signal. The second oscillating signal has a magnitude that is proportional to and less than the first oscillating signal. The power amplifying technique further includes selecting one of the first and second oscillating signals to use for generating a power-amplified output signal, and amplifying the selected one of the first and second oscillating signals to generate the power-amplified output signal.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: June 20, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Sudipto Chakraborty
  • Patent number: 9632643
    Abstract: A touch input device may be provided that includes: a touch sensor panel including a plurality of drive electrodes, a plurality of receiving electrodes and a plurality of node capacitors formed by the drive electrode and the receiving electrode; a driving part applying a driving signal to the drive electrode; a detector including a receiver which receives a signal including information on a capacitance of the node capacitor through the receiving electrode and integrates the signal; and an input capacitor connected between the receiver and the receiving electrode.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: April 25, 2017
    Assignee: HiDeep Inc.
    Inventor: Youngho Cho
  • Patent number: 9632644
    Abstract: A multi-channel contact sensing apparatus includes a ground contact part, a loop unit including a transmitting sub-loop unit and a receiving sub-loop unit, a controller that controls by applying a transmission signal to the transmitting sub-loop unit, and receiving a reception signal from the receiving sub-loop unit, and a switch unit that prevents each of at least one loop of the transmitting sub-loop unit and at least one loop of the receiving sub-loop unit from being connected to the ground contact part during a first period. The multi-channel contact sensing apparatus simultaneously measures a finger touch input and a pen input.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: April 25, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Dong-Kyoon Han
  • Patent number: 9614697
    Abstract: The present invention provides GPA embodiments. In some embodiments, a GPA stage with a negative capacitance unit is provided.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 4, 2017
    Assignee: Intel Corporation
    Inventors: Kevin Chang, Stefano Giaconi
  • Patent number: 9590676
    Abstract: A signal receiving apparatus includes: a first amplifying device, a second amplifying device, a feedback device, and a mixing device, wherein the mixing device is a passive mixer, the second amplifying device is arranged to provide an input impedance looking into an input terminal of the second amplifying device to fall within a first impedance range when the second amplifying device operates in a first frequency range, the second amplifying device is arranged to provide the input impedance looking into the input terminal of the second amplifying device to fall within a second impedance range when the second amplifying device operates in a second frequency range, the second frequency range is different from the first frequency range, and the second impedance range is different from the first impedance range.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: March 7, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chia-Hsin Wu, Yi-An Li
  • Patent number: 9590829
    Abstract: According to an embodiment, the modulated signal generating device modulates an input signal and generates an output signal. The modulated signal generating device includes a plurality of amplifiers, a combiner, a determining unit and a control signal generating unit. The plurality of amplifiers connects in parallel with one another and each configures to drive based on a control signal and to generate amplified signals. The combiner configures to combine the amplified signals and to obtain the output signal having a stepwise waveform. The determining unit configures to determine number of amplifiers to be driven based on a value of the input signal in a period shorter than a period of the input signal.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: March 7, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshimasa Egashira, Keiichi Yamaguchi
  • Patent number: 9543901
    Abstract: Optimization methods via various circuital arrangements for amplifier with variable supply power are presented. In one embodiment, a switch can be controlled to include or exclude a feedback network in a feedback path to the amplifier to adjust a response of the amplifier dependent on a region of operation of the amplifier arrangement (e.g. linear region or compression region).
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: January 10, 2017
    Assignee: Peregrine Semiconductor Corporation
    Inventors: Dan William Nobbe, Jeffrey A. Dykstra, Chris Olson, James S. Cable
  • Patent number: 9509355
    Abstract: Apparatuses, systems, and methods for calibration of quadrature imbalance in direct conversion transceivers are contemplated. A transceiver controller may perform a self-calibration to address quadrature imbalance. The controller may isolate the transmitter and receiver from any antennas, couple the radio frequency (RF) section of the transmitter to the RF section of the receiver via a loopback path, and inject a calibration signal into the transmitter. In the loopback path, the controller may phase-shift the signal that propagates through the transmitter using two different phase angles to produce two different signals that propagate into the receiver. By measuring the two different signals that exit the receiver, the controller may be able to calculate correction coefficients, or parameters, which may be used to adjust elements that address or correct the quadrature imbalance for both the transmitter and receiver.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: November 29, 2016
    Assignee: Intel Corporation
    Inventor: Lior Kravitz
  • Patent number: 9407219
    Abstract: An electronic circuit for amplifying a wanted signal, comprising: a comparator having a first input, a second input and an output, wherein a connection is provided, which leads the wanted signal to the first input; a first driver stage comprising an input and an output, wherein the first driver stage includes at least a first push pull end stage; a low-pass filter having an input and an output, wherein the output of the first driver stage leads to the input of the low pass filter; a first feedback network; and a second feedback network.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: August 2, 2016
    Assignee: Endress+Hauser Conducta GmbH+Co. KG
    Inventors: Bjorn Haase, Stefan Pilz
  • Patent number: 9391565
    Abstract: This application discloses correction circuitry for correcting a phase distortion in an amplification circuit by measuring an amplitude distortion and controlling a phase shifting component based upon the measured amplitude distortion. In one embodiment, a first amplitude distortion sensor is coupled to a first node of an amplification circuit, and a first phase shifter is coupled to a second node of the amplification circuit. Additionally, a first control circuit is coupled to the first amplitude sensor and to the first phase shifter. The first control circuit is configured to correlate a first amplitude distortion measured by the first amplitude distortion sensor to a first inferred phase distortion, and to generate a first phase correction signal based upon the first inferred phase distortion, and is configured to send the first phase correction signal towards the first phase shifter.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: July 12, 2016
    Assignee: TriQuint International PTE, Ltd.
    Inventors: Baker Scott, Ying Shi, George Maxim, Malcolm Smith, Daniel Ho
  • Patent number: 9350405
    Abstract: A system that incorporates teachings of the subject disclosure may include, for example, a controller that determines a radiated throughput for at least one of an uplink throughput or a downlink throughput of the communication device, reduces transmit power for the communication device responsive to the radiated throughput satisfying a throughput threshold, and tunes a matching network of the communication device responsive to the radiated throughput not satisfying the throughput threshold. Other embodiments are disclosed.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: May 24, 2016
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, Joseph Caci, Keith Manssen
  • Patent number: 9300357
    Abstract: Signals sent between a first device and a second device are split. A first user adjustable input signal equalization and gain compensates for losses to signals from the first device before the compensated signals are forwarded to the second device, a first analytic instrument and a second analytic instrument. A second user adjustable input signal equalization and gain compensates for losses to signals from the second device before the first compensated signals are forwarded to the first device, the first analytic instrument and the second analytic instrument.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: March 29, 2016
    Assignee: SeralTek, LLC
    Inventor: Dale T Smith
  • Patent number: 9236842
    Abstract: A bass enhancement system can provide an enhanced bass effect for speakers, including relatively small speakers. The bass enhancement system can apply one or more bass enhancements to an input audio signal. For example, the bass enhancement system can exploit how the human ear processes overtones and harmonics of low-frequency sounds to create the perception that non-existent (or attenuated) low-frequency sounds are being emitted from a loudspeaker. The bass enhancement system can generate harmonics of at least some low-frequency fundamental frequencies in one embodiment. Playback of at least some harmonics of a low-frequency fundamental frequency can cause a listener to perceive the playback of the low-frequency fundamental frequency. Advantageously, in certain embodiments, the bass enhancement system can generate these harmonics without performing processing-intensive pitch-detection techniques or the like to identify the fundamental frequencies.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: January 12, 2016
    Assignee: DTS LLC
    Inventors: Themis Katsianos, Oveal Jerome Walker
  • Patent number: 9231574
    Abstract: A power converter and a clock module employed for providing a clock signal to the power converter. The power converter converts an input voltage to an output voltage based on at least the switching on and off of a main switch. The clock module monitors a deviation of the output voltage from its desired value and compares the deviation with a predetermined threshold window to provide a clock control signal. The clock module further regulates the clock signal in response to the clock control signal.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: January 5, 2016
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: James Nguyen, Yike Li
  • Patent number: 9223445
    Abstract: Disclosed is a touch position sensor. Force detection circuitry can be included with the position sensor, for example, to determine an amount of force applied to a touch panel of the sensor.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: December 29, 2015
    Assignee: Atmel Corporation
    Inventors: Peter Sleeman, John Dubery
  • Patent number: 9217784
    Abstract: A control apparatus for a gradient amplifier includes a differentiation unit. The differentiation unit forms a differentiation signal by differential processing from a current desired value signal of the gradient amplifier. At least one electrical low pass filter unit is connected in series with the differentiation unit, and/or at least one electrical high pass filter unit is connected in parallel with the differentiation unit.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: December 22, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventor: Helmut Lenz
  • Patent number: 9214907
    Abstract: A power amplifying circuit includes: a signal input terminal, a common-mode voltage input terminal, a power tube control unit, a feedback loop, a driving unit, a first switching element, a second switching element, a low-pass filter, a speaker, a source voltage terminal, and a ground terminal, wherein the power tube control unit includes: an operational amplifier, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, a eighth switch, a ninth switch, a third switching element connected with the third switch and the fourth switch, a fourth switching element connected with the fifth switch and the sixth switch, and a comparator connected with the third switching element and the fourth switching element. The present invention is able to realize functions of CLASS AB amplifier and CLASS D amplifier.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: December 15, 2015
    Assignee: IPGoal Microelectronics (Sichuan) Co., Ltd.
    Inventor: Junwei Huang
  • Patent number: 9163625
    Abstract: In order to realize, without inviting cost increase, a control for maintaining a pressure of fluid delivered from a pump at a target value, a pump control unit is provided with a driver control unit controlling a rotational speed of a hydraulic pump through adjustment of a duty ratio of a PWM signal driving excitation coils of an electric motor. Further, the pump control unit is provided also with a signal correction circuit configured to convert a current flowing in the excitation coils to a voltage signal with using a shunt resistor and to divide the voltage signal with using a voltage division ratio setting circuit and to shorten an ON signal of the PWM signal by increasing the divided voltage. The voltage division ratio setting circuit has a characteristics of setting the divided voltage higher, the longer an ON period of the PWM signal.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: October 20, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shigemitsu Suzuki, Yutaka Iguchi, Atsushi Watanabe