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Amplifiers

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
07/10/2014 > 13 patent applications in 9 patent subcategories.

20140191797 - Method and system for boosting the supply of power amplifier: The present invention relates to a system for boosting the power supply of an RF power amplifier in high peak to average power ratio applications, wherein said power amplifier is coupled to receive and amplify a digital data stream of a baseband signal, (e.g., which after modulation with a carrier... Agent:

20140191799 - Predistorter and predistorter control method: In a predistorter that can compensate an intermodulation distortion component generated in a power amplifier even when employing carrier aggregation, a linear transmission path delays and transmits an input signal. Signal generation units generate individual carrier distortion signals for respective carriers included in an input signal to output an individual... Agent: Ntt Docomo, Inc.

20140191798 - Transmission signal power control apparatus, communication apparatus and predistortion coefficient updating method: A transmission signal power control apparatus includes a power amplifier model unit which generates a learning digital signal by multiplying part of a predistortion signal by model coefficients which tentatively represent the input-output characteristics of a power amplifier, and an adaptive low-pass filter which generates a pseudo feedback signal by... Agent: Fujitsu Limited

20140191800 - Multiple winding transformer coupled amplifier: An integrated circuit includes a radio frequency (RF) amplifier having a trifilar transformer coupled to a gain device in two negative feedback paths. The trifilar transformer includes a first winding, a second winding and a third winding, a first dielectric core is disposed between the first winding and the second... Agent: Analog Devices, Inc.

20140191801 - Bicmos gate driver for class-s radio frequency power amplifier: The invention may be embodied in a resynchronizing, push-pull drive circuit for driving the gate electrodes of a digital Class-S Radio Frequency Power Amplifier (RF-PA). A binary bitstream received from a bitstream generator, such as a sigma-delta modulator, Viterbi-based optimal-bit-pattern modulator sigma-delta, or other suitable modulator, is resynchronized to a... Agent: Lsi Corporation

20140191802 - Narrow voltage range multi-level output pulse modulated amplifier with one-bit hysteresis quantizer: An amplifier system may include a power stage having inputs for three different supply voltages and an output for coupling to a load, a controller to generate control signals to the power stage that cause the power stage to vary an output voltage applied to the load among more than... Agent: Analog Devices Technology

20140191803 - Continuous variable gain amplifier: A continuous variable gain amplifier includes an attenuator network, a boost network, a first amplifying network, and a second amplifying network, where the attenuator network generates first differential output signals according to an input signal and sends the first differential output signals to the first amplifying network and the second... Agent: Huawei Technologies Co., Ltd.

20140191804 - Variable gain amplifier: A variable gain amplifier (100) includes a transistor (110), an FB impedance section (120), a source impedance section (130), a drain impedance section (140), a gain controller (150), and a frequency characteristic controller (160). The gain controller (150) varies impedance of one of the FB impedance section (140), the source... Agent:

20140191805 - N-way doherty distributed power amplifier with power tracking: A power amplifier using N-way Doherty structure with adaptive bias supply power tracking for extending the efficiency region over the high peak-to-average power:ratio of the multiplexing modulated signals such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. In an embodiment, present invention uses a dual-feed... Agent: Dali Systems Co., Ltd.

20140191806 - Electronic system - radio frequency power amplifier and method for dynamic adjusting bias point: A radio frequency (RF) power amplifier is disclosed. The RF power amplifier includes a bias circuit, an output stage circuit and dynamic bias controlling circuit. The bias circuit receives a first system voltage and provides a working voltage accordingly. The output stage circuit receives the working voltage so as to... Agent: Advanced Semiconductor Engineering Inc.

20140191808 - Systems and methods for biasing amplifiers during high-power operation with adaptive closed-loop control: Various embodiments described herein provide systems and methods for improved performance for power amplifiers, particularly GaN power amplifiers. According to some embodiments, a power amplifier (e.g., GaN power amplifier) utilizes an adaptive closed-loop control of the drain current of the power amplifier to achieve improved performance for the power amplifier.... Agent: Aviat U.s., Inc.

20140191807 - Systems and methods for biasing amplifiers with adaptive closed loop control: Various embodiments described herein provide systems and methods for improved performance for power amplifiers, particularly GaN power amplifiers. According to some embodiments, a power amplifier (e.g., GaN power amplifier) utilizes an adaptive closed loop control of the drain current of the power amplifier to achieve improved performance for the power... Agent: Aviat U.s., Inc.

20140191809 - Radio frequency amplifier circuit: A radio frequency amplifier circuit includes a transistor and an output-side matching circuit. The output-side matching circuit includes a first distributed constant line to which a radio frequency signal from the transistor is transmitted, a flat plate lead terminal transmitting the radio frequency signal from the first distributed constant line... Agent:

  
07/03/2014 > 19 patent applications in 14 patent subcategories.

20140184323 - Hybrid digital/analog power amplifier: The invention may be embodied in radio frequency power amplifier (RF-PA) predriver circuits employing a hybrid analog/digital RF architecture including a resynchronizing digital-to-analog convertor to drive an efficient high-power output stage suitable for driving standard high power amplifier (HPA) output devices. The hybrid analog/digital RF architecture retains the advantages of... Agent: Lsi Corporation

20140184324 - Analog circuit and display device and electronic device: The invention provides an analog circuit that decreases an effect of variation of a transistor. By flowing a bias current in a compensation operation, a voltage between the gate and source of the transistor to be compensated is held in a capacitor. In a normal operation, the voltage stored in... Agent: Semiconductor Energy Laboratory Co., Ltd.

20140184325 - Signal splitting apparatus suitable for use in a power amplifier: Disclosed is a signal splitting apparatus useable in a power amplifier having two or more power amplifiers. The apparatus includes a direct gain component; and a derived gain component connected to the direct gain component. The derived gain component derives the derived gain by imposing a constraint which is valid... Agent: Telefonaktiebolaget L M Ericsson (publ)

20140184326 - Power amplifier: A power amplifier includes: an amplifier; a matching circuit, including a variable reactance magnetic device having a reactance which varies in accordance with a magnetic field, configured to match an output of the amplifier with a certain impedance; an amplitude detector configured to detect the amplitude of an input signal... Agent: Fujitsu Limited

20140184327 - Method for implementing compensation filter and apparatus for signal bandwidth compensation: Embodiments of the present invention disclose a method for implementing a compensation filter and an apparatus for signal bandwidth compensation. The apparatus includes: a digital predistortion filtering unit, a compensation filter, a conversion unit, and a power amplifier; where the digital predistortion filtering unit receives an original signal, performs predistortion... Agent: Huawei Technologies Co., Ltd.

20140184328 - Cascode bias of power mos transistors: There is disclosed a driver circuit for a power amplifier of class D type having a segmented architecture with at least one current branch which can be powered down in a low power mode of operation of the circuit. The branch comprising a switch with a cascode MOS transistor, the... Agent: St-ericsson Sa

20140184329 - Current canceling gain control for high frequency wideband cross-coupled amplifiers: An embodiment of the present invention provides a configuration of a cross-coupled common-source differential amplifier stage which enables performing a gain step down (attenuation) while maintaining good step flatness over a large relative bandwidth.... Agent:

20140184330 - Time gain compensation: In certain embodiments, circuits and methods for time gain compensation are provided. A circuit includes a first op-amp that is configured to compare a first and a second input voltage signal received from first and second input circuits, respectively, and output a first op-amp output signal. A control circuit coupled... Agent: Texas Instruments Incorporated

20140184332 - Amplifier circuit including digital amplifier and analog amplifier: An amplifier circuit includes a digital amplifier configured to amplify an input signal to output a first output signal, an analog amplifier configured to amplify the input signal to output a second output signal, a check circuit configured to produce a check signal responsive to frequencies of the input signal,... Agent: Fujitsu Limited

20140184331 - Amplifier circuits and methods of amplifying an input signal: A method of operating an amplifier circuit having a pre-charge phase and a sample/conversion phase includes, during a pre-charge phase, charging first and second capacitors to first and second bias voltages. The first capacitor is coupled to a first input of an amplifier circuit, which has a second input and... Agent:

20140184333 - Feedback amplifier: Provided is a feedback amplifier. The feedback amplifier includes: an amplification circuit unit amplifying a bust packet signal inputted from an input terminal and outputting the amplified voltage to an output terminal; a feedback circuit unit disposed between the input terminal and the output terminal and controlling whether to apply... Agent: Electronics And Telecommunications Research Institute

20140184335 - Amplifiers operating in envelope tracking mode or non-envelope tracking mode: Various envelope tracking amplifiers are presented that can be switched between an ET (envelope tracking) mode and a non-ET mode. Switches and/or tunable components are utilized in constructing the envelope tracking amplifiers that can be switched between the ET mode and the non-ET mode.... Agent: Peregrine Semiconductor Corporation

20140184334 - Optimization methods for amplifier with variable supply power: 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... Agent: Peregrine Semiconductor Corporation

20140184336 - Amplifier dynamic bias adjustment for envelope tracking: An envelope tracking amplifier having stacked transistors is presented. The envelope tracking amplifier uses dynamic bias voltages at one or more gates of the stacked transistors in addition to a dynamic bias voltage at a drain of a transistor.... Agent: Peregrine Semiconductor Corporation

20140184338 - Ask modulation amplification circuit: An amplitude shift keying (ASK) modulation amplifier circuit includes a first amplifier to which a high frequency signal and a modulating signal are supplied, and that is configured to perform an amplification of the high frequency signal and an ASK modulation, and a second amplifier to which an output of... Agent: Kabushiki Kaisha Toshiba

20140184337 - Control systems and methods for power amplifiers operating in envelope tracking mode: Control systems and methods for power amplifiers operating in envelope tracking mode are presented. A set of corresponding functions and modules are described and various possible system configurations using such functions and modules are presented.... Agent: Peregrine Semiconductor Corporation

20140184339 - High efficiency output stage amplification for radio frequency (rf) transmitters: Highly power efficient transmitter output stage designs are provided. In an embodiment, the probability density function (PDF) of an input signal is divided into a plurality of regions, and samples of the input signal are processed depending on the region of the PDF within which they fail. The PDF can... Agent: Broadcom Corporation

20140184340 - Integrated circuit for use in a hybrid output stage: This invention generally relates to the technical field of integrated circuits. More specifically the invention relates to output stages for providing an output signal, into which an integrated circuit may be used. An aspect relates to an integrated circuit capable of driving an external class-B output stage in a manner... Agent:

20140184341 - Integration of signal sampling within transistor amplifier stage: Embodiments of the invention are generally directed to integration of signal sampling within a transistor amplifier stage. An embodiment of an apparatus includes a amplifier stage including a transistor to receive a source signal and produce an output signal, wherein the transistor includes multiple fingers for at least a first... Agent: Silicon Image, Inc.

  
06/26/2014 > 9 patent applications in 8 patent subcategories.

20140176235 - Signal absorption circuit: This patent pertains to a new technique of maximizing the power transferred from a signal source. It accomplishes this by increasing the ratio of the electric to magnetic field and creating a high field impedance on the receiving end of the signal.... Agent:

20140176236 - Pilot signal generation circuit: In some embodiments, a pilot signal generation circuit is provided including a buffer and a differential amplifier responsive to an output of the buffer. A first transistor is connected to control a reference voltage at an input of the buffer in response to a pulse width modulated logic signal and... Agent: Aerovironment, Inc.

20140176237 - Electronic device and control method thereof: An electronic device includes an amplifier which is configured to amplify a sound signal and includes a vacuum tube including a heater configured to heat the vacuum tube; a voltage supply which is configured to supply a first voltage and a second voltage which is higher than the first voltage;... Agent: Samsung Electronics Co., Ltd.

20140176238 - Dc offset cancellation for a multi-stage amplifier: This invention provides a multi-stage amplifier incorporating DC offset cancellation. The amplifier has a plurality of series-connected gain stages each of which comprises a differential amplifier unit generating a pair of differential outputs from a pair of differential inputs. In particular, a trailing stage in the plurality of gain stages... Agent: Hong Kong Applied Science And Technology Research Institute Company Limited

20140176239 - Adaptive control mechanisms to control input and output common-mode voltages of differential amplifier circuits: An amplifier circuit includes differential input nodes, a differential amplifier stage having differential input terminals and differential output terminals, and an input common-mode voltage adaptation circuit connected between the differential input nodes of the amplifier circuit and the differential input terminals of the differential amplifier stage. During an input common-mode... Agent: Lsi Corporation

20140176240 - High-frequency bandwidth amplifying circuit: A high-frequency bandwidth amplifying circuit includes a forward channel and a backward channel. An input terminal of the forward channel and an external forward input terminal are connected; an output terminal of the forward channel and a forward output port are connected. An input terminal of the backward channel and... Agent: Ipgoal Microelectronics (sichuan) Co., Ltd.

20140176241 - High-frequency bandwidth amplifying circuit: A high-frequency bandwidth amplifier circuit comprises: a push-pull amplifier, a feedback resistor, a first active inductor, and a second active inductor. An input terminal of the push-pull amplifier is connected with an external input terminal. An output terminal of the push-pull amplifier is connected with an output port. A first... Agent: Ipgoal Microelectronics (sichuan) Co., Ltd.

20140176242 - Driver amplifier with asymmetrical t-coil matching network: A driver amplifier with asymmetrical T-coil matching network is disclosed. In an exemplary embodiment, an apparatus includes a first inductor configured to receive an input signal at an input terminal and to provide an output signal at an output terminal that is matched to a resistive load. The apparatus also... Agent: Qualcomm Incorporated

20140176243 - Systems and methods to adjust the matching conditions of an amplifier: A system and method improve amplifier efficiency of operation relative to that of a matching circuit with fixed matching conditions. A power level representing a level of transmission power from an amplifier circuit and an indicator of amplifier circuit operation are provided. The indicator is at least one of channel,... Agent: Sige Semiconductor, Inc.

  
06/19/2014 > 24 patent applications in 18 patent subcategories.

20140167841 - Power supply arrangement for multi-stage amplifier: There is disclosed a multi-stage amplifier comprising: a first amplifier stage; a second amplifier stage; a first voltage supply stage arranged to provide a supply voltage to the first amplifier in dependence on an average power of a signal to be amplified; and a second voltage supply stage arranged to... Agent: Nujira Limited

20140167843 - Method and apparatus for calibrating an envelope tracking system: A method of calibrating an envelope tracking system for a supply voltage for a power amplifier module within a radio frequency (RF) transmitter module of a wireless communication unit. The method includes, within at least one signal processing module of the wireless communication unit, determining combinations of the power amplifier... Agent: Mediatek Singapore Pte. Ltd.

20140167842 - Power circuit and method thereof: A power circuit and a method thereof are provided. The method includes: determining, by a power controller, a first signal is to be transmitted in the continuous mode or the burst mode; when the first signal is to be transmitted in the continuous mode, activating, by a power controller, a... Agent: Mediatek Inc.

20140167845 - Cdma/ofdm linearity compliant wireless communication amplifier: A digital pre-distortion system which can provide the flexibility to model the highly non-linear distortion associated with High Efficiency RF Power Amplifiers while through a novel implementation of a least squares estimation process allows an implementation well suited for an FPGA application where limited resources and in particular memory resources... Agent: Aceaxis Limited

20140167844 - Distortion compensation device and distortion compensation method: A distortion compensation device includes: a distortion compensator configured to output, to a power amplifier, a predistortion signal obtained by performing distortion compensation processing on a transmission signal by using a distortion compensation coefficient, wherein the distortion compensator limits bands of a reference signal and a feedback signal so that... Agent: Fujitsu Limited

20140167846 - Amplifier, mobile communication device and method for amplifying: An amplifier includes an amplifying stage configured to provide an amplifier output signal based on a combination of a received amplifying stage input signal and a received amplified version of the amplifying stage input signal.... Agent: Intel Mobile Communications Gmbh

20140167847 - Operational amplifying device with auto-adjustment output impedance: An operational amplifying device with auto-adjustment output impedance includes an operational amplifier and first to third signal paths. The operational amplifier has an output connected to its inverting input, and a non-inverting input for receiving an input signal. The first signal path has one end connected to the output of... Agent: Orise Technology Co., Ltd.

20140167848 - Sense amplifier having loop gain control: Memories, sense amplifiers, and methods for amplifying a current input are disclosed, including a sense amplifier including a bias circuit configured to provide a bias voltage having a magnitude responsive to maintaining a substantially constant loop gain, and further including an amplifier stage coupled to the bias circuit to receive... Agent: Micron Technology, Inc.

20140167849 - Differential amplifier: A differential amplification circuit includes a first current control unit configured to control driving current in response to a voltage level difference between first input voltage and second input voltage, a second current control unit configured to control the driving current in response to a voltage level difference between the... Agent: Sk Hynix Inc.

20140167850 - Current feedback output circuit: The current feedback output circuit includes first and second transistors. The current feedback output circuit includes a current amplifier that has a non-inverting input terminal, an inverting input terminal, a first output terminal and a second output terminal, an input impedance of the non-inverting input terminal being higher than an... Agent: Kabushiki Kaisha Toshiba

20140167851 - Current-mode line driver: Disclosed are various embodiments of a current-mode line driver that may facilitate transmitting signals to a load. The current-mode line driver may comprise a common-mode current sense element that provides a signal corresponding to the common-mode output current of the line driver. A transconductance element receives the signal from the... Agent: Broadcom Corporation

20140167852 - Semiconductor device and offset voltage correcting method: A semiconductor device includes: an amplifier circuit that has an inverting input terminal, a non-inverting input terminal, and an output terminal; a first variable voltage source that generates a first bias voltage having a voltage value corresponding to a first set value; a second variable voltage source that generates a... Agent: Renesas Electronics Corporation

20140167853 - Power amplifier: A first amplifier is connected between an input terminal and an output terminal. A first junction point is located between the input terminal and an input of the first amplifier. A second junction point is located between the output terminal and an output of the first amplifier. A second amplifier... Agent: Mitsubishi Electric Corporation

20140167854 - Electronic system - radio frequency power amplifier and method for self-adjusting bias point: A radio frequency (RF) power amplifier is disclosed. The RF power amplifier includes a bias circuit, an output stage circuit and dynamic bias controlling circuit. The bias circuit receives a system voltage and the bias circuit provides a working voltage according to the system voltage. The output stage circuit receives... Agent: Advanced Semiconductor Engineering Inc.

20140167855 - Rf power transistor circuits: A radio frequency (RF) power transistor circuit includes a power transistor and a decoupling circuit. The power transistor has a control electrode coupled to an input terminal for receiving an RF input signal, a first current electrode for providing an RF output signal at an output terminal, and a second... Agent: Freescale Semiconductor, Inc.

20140167858 - Amplifer device: The disclosure relates to an amplifier device comprising an integrated circuit die (701a; 701b) having a first amplifier (702a; 702b) and a second amplifier. A Doherty amplifier may be implemented in accordance with the present invention. The amplifier device also comprises a first connector (706a; 706b) having a first end... Agent: Nxp B.v.

20140167856 - Power amplifier and operation method therefor: In a power amplifier, in response to a power mode signal at a predetermined level, a first switch circuit supplies a signal to first and second amplifier devices that perform parallel operations. In response to the power mode signal at another level, the first switch circuit supplies a signal to... Agent: Murata Manufacturing Co., Ltd.

20140167857 - Transconductance amplifier: A transconductance amplifier has a pair of input terminals and a pair of output terminals. A first pair of transconductors is connected to the input terminals and the output terminals. A second pair of transconductors has inputs connected to output terminals, and outputs connected to the opposing output terminals. A... Agent: Newsouth Innovations Pty. Ltd.

20140167861 - Bias circuit and power amplifier with dual-power mode: There are provided a bias circuit and a power amplifier with a dual-power mode. The bias circuit includes a regulated voltage generation unit generating a regulated voltage by using a reference voltage, a bias voltage generation unit generating a bias voltage according to the regulated voltage, and a power mode... Agent: Samsung Electro-mechanics Co., Ltd.

20140167859 - Current mirror with saturated semiconductor resistor: A current mirror circuit having formed in a semiconductor: a pair of transistors arranged to produce an output current through an output one of the transistors proportional to a reference current fed to an input one of the pair of transistors; a resistor comprising a pair of spaced electrodes in... Agent: Raytheon Company

20140167860 - Multi-stage amplifier: Exemplary embodiments are directed to operating a multi-stage amplifier with low-voltage supply voltages. A multi-stage amplifier may include a first path of an amplifier output stage configured to convey an output signal if a first supply voltage is greater than a threshold voltage. The multi-stage amplifier may also include a... Agent: Qualcomm Incorporated

20140167862 - Electrostatic discharge protection of amplifier cascode devices: Exemplary embodiments are directed to providing electrostatic discharge (ESD) protection of a cascode device of an amplifier. In an exemplary embodiment, a transistor is configured to receive a bias voltage and at least one circuit element coupled to the transistor and configured to receive an input voltage via an input... Agent: Qualcomm Incorporated

20140167863 - Rf power transistor circuits: A radio frequency (RF) power transistor circuit includes a power transistor and a decoupling circuit. The power transistor has a control electrode coupled to an input terminal for receiving an RF input signal, a first current electrode for providing an RF output signal at an output terminal, and a second... Agent: Freescale Semiconductor, Inc.

20140167864 - Tunable wide band driver amplifier: A tunable wide band driver amplifier is disclosed. In an exemplary embodiment, an apparatus includes a first band selection circuit selectively connected between an output terminal of an amplifier and a circuit ground. The first band selection circuit configured to adjust an amplification band from a first frequency band to... Agent: Qualcomm Incorporated

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