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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.
  
09/04/2014 > 2 patent applications in 2 patent subcategories.

20140247091 - Adaptive biasing technique for audio circuitry: A circuit comprising a peak detector configured to receive a positive voltage input, a negative voltage input and a reference current source input and to output a peak signal data value. A fast attack current source control coupled to the peak detector and configured to generate a current source control... Agent: Conexant Systems, Inc.

20140247092 - Wideband distributed amplifier with integral bypass: An improved distributed amplifier (200) includes an input transmission line (201) terminated with an input lead configured to accept an input signal and an output transmission line (202) terminated with an output lead configured to output an output signal. A number of parallel amplifier cells (204N) are connected to the... Agent: Harris Corporation

  
08/28/2014 > 14 patent applications in 11 patent subcategories.

20140240039 - Enhanced doherty amplifier: The disclosure relates to an enhanced Doherty amplifier that provides significant performance improvements over conventional Doherty amplifiers. The enhanced Doherty amplifier includes a power splitter, combining node, a carrier path, and a peaking path. The power splitter is configured to receive an input signal and split the input signal into... Agent: Cree, Inc.

20140240040 - Multi-mode amplifier system: A multi-mode amplifier system includes a supply converter and a multi-stage amplifier. The supply converter is configured to generate a plurality of varied supply signals according to an output power mode. The multi-stage amplifier is configured to generate an RF output signal from an RF input signal according to the... Agent:

20140240042 - Operational amplifier: There is provided an operational amplifier capable of detecting that an input terminal has been open circuited without restricting the voltage range of an input signal. The operational amplifier includes a first comparator which detects that an inverting input terminal of an operational amplifier has been open circuited, a second... Agent: Seiko Instruments Inc.

20140240041 - Operational amplifier circuit: Provided is an operational amplifier circuit capable of operating with lower current consumption. An amplifier stage, a FIR filter, and a sample and hold circuit are connected in series, thus enabling reduction of an input offset voltage and amplification of an input signal voltage without using an integral circuit. Current... Agent: Seiko Instruments Inc.

20140240043 - Amplifier circuit with improved slew rate: An amplifier circuit for improved slew rate consists of three main sections, which are the common mode rejection stage, primary gain stage and the output stage. The main circuit is a modified version of the fully differential operational amplifier circuit. The modifications done to this said circuit, enhances impedance which... Agent:

20140240044 - Dual path operational amplifier: An operational amplifier has two paths, a high frequency path and a low frequency path. In addition, it has three main sections of stages. A stage converts input voltage to an amplified output voltage, a stage converting an input voltage in to an output current and a final stage where... Agent:

20140240045 - Amplifier stage: A differential amplifier stage may include: a first transistor having a gate terminal; a second transistor having a gate terminal; and a voltage limiting circuit coupled to the gate terminals of the first and second transistors, wherein the voltage limiting circuit limits a gate voltage supplied to at least one... Agent: Intel Mobile Communications Gmbh

20140240046 - Systems and methods for operating a power amplifier: A power amplifier configured to receive an AC input signal and output, based on the AC input signal, an output voltage via a first output voltage terminal and a second output voltage terminal. The power amplifier includes a first transistor and a second transistor connected in a push-pull configuration, a... Agent: Marvell World Trade Ltd.

20140240047 - Digitally-controlled power amplifier with bandpass filtering/transient waveform control and related digitally-controlled power amplifier cell: A digitally-controlled power amplifier (DPA) includes a radio-frequency (RF) clock input, an amplitude control word (ACW) input, and a plurality of DPA cells. The RF clock input is arranged for receiving an RF clock. The ACW input is arranged for receiving a digital ACW signal. The DPA cells are coupled... Agent: Mediatek Inc.

20140240048 - Amplifiers with multiple outputs and configurable degeneration inductor: Multi-output amplifiers with configurable source degeneration inductance and having good performance are disclosed. In an exemplary design, an apparatus (e.g., a wireless device or an integrated circuit) includes a gain transistor and a configurable degeneration inductor for an amplifier. The gain transistor receives an input signal and provides an amplified... Agent: Qualcomm Incorporated

20140240049 - Bias circuit and amplifier controlling bias voltage: There are provided a bias circuit and an amplifier controlling a bias voltage, the bias circuit and the amplifier including a control voltage generating unit generating a control voltage using a reference voltage, a bias voltage generating unit generating a bias voltage according to the control voltage, and a voltage... Agent: Samsung Electro-mechanics Co., Ltd.

20140240051 - Audio amplifier power supply with inherent power factor correction: An audio amplifier is powered by a switch mode power supply optimized for audio applications. The power supply includes a rectifier circuit and a discontinuous mode multiphase isolated flyback power circuit and does not require a separate power factor correction stage. The discontinuous mode multiphase isolated flyback power circuit includes... Agent: Crestron Electronics, Inc.

20140240050 - Power circuit: A power circuit includes a bridge circuit connected to a first node by which an output voltage is supplied to a load circuit including an amplifier containing a CMOS inverter, and configured to generate a current flowing in a first current channel and a current flowing in a second current... Agent: Kabushiki Kaisha Toshiba

20140240052 - High efficiency power amplifiers with advanced power solutions: A device comprises a switch network having a plurality of switch cells connected in series, wherein each switch cell has a plurality of input voltages, and a plurality of switches, wherein each switch is coupled to an input voltage, and wherein the switch network is configured such that a different... Agent:

  
08/21/2014 > 17 patent applications in 14 patent subcategories.

20140232456 - Fast-settling capacitive-coupled amplifiers: Fast-settling capacitive-coupled amplifiers are disclosed. The amplifiers use two Capacitive Coupled paths embedded in a Multipath Hybrid Nested Miller Compensation topology. One path is a direct high frequency path and the other path is a slower stabilization path. This combination results in a flat frequency response to and through the... Agent: Maxim Integrated Products, Inc.

20140232457 - Fast, low power comparator with dynamic bias background: A comparator circuit comprising an operational amplifier configured to compare a difference between a switching voltage and a reference voltage, and a dynamically adjustable bias current generator coupled to the operational amplifier. A method of conserving power in a comparator circuit includes estimating a switching regulator load current value, communicating... Agent:

20140232458 - Method and apparatus for a multi-standard, multi-mode, dynamic, dc-dc converter for radio frequency power amplifiers: A multi-mode, dynamic, DC-DC converter supplies a dynamically varying voltage, as required, from a battery to an RF power amplifier (PA). In envelope tracking mode, a fast DC-DC converter generates a dynamic voltage that varies based on the amplitude envelope of an RF signal, and regulates the voltage at the... Agent:

20140232459 - Bias circuit and amplifier with current limit function: There are provided a bias circuit and an amplifier having a current limit function, including: a control voltage generating unit generating a control voltage using a reference voltage; a bias voltage generating unit generating a bias voltage according to the control voltage; and a bias current limit unit controlling the... Agent:

20140232460 - Differential charge reduction: One embodiment relates to an apparatus configured to cancel charge injected on a node of a differential pair of nodes. A dummy circuit element can inject charge on an inverted node to cancel charge injected on a non-inverted node by a switch when the switch is switched off. In addition,... Agent: Analog Devices, Inc.

20140232462 - Power amplifier using differential structure: Provided is a power amplifier which includes: a first transistor and a second transistor each having a first end connected to a first power source supplying a first voltage and to which signals having a same size but opposite polarities are input; a third transistor and a fourth transistor having... Agent: Soongsil University Research Consortium Techno-park

20140232461 - Sense amplifier system and sensing method thereof: A sense amplifier system and sensing method thereof are provided. The proposed sense amplifier system includes plural sense amplifiers, each of which includes a first switch having a first terminal, a second terminal, and a bulk terminal electrically connected to the first terminal, a second switch having a first terminal... Agent: Macronix International Co., Ltd.

20140232463 - Class resonant-h electrosurgical generators: A generator for use with an electrosurgical device is provided. The generator has a gain stage electrically disposed between a first voltage rail and a second voltage rail, wherein the gain stage includes an input and an output. A voltage source operably coupled to the gain stage input and configured... Agent: Covidien Lp

20140232464 - Low power high-speed digital receiver: Described herein is a low power high-speed digital receiver. The apparatus of the receiver comprises: a sampling unit operable to sample a differential input signal and to boost input signal gain, the sampling unit to generate a sampled differential signal with boosted input signal gain; and a differential amplifier to... Agent:

20140232465 - Frequency compensation techniques for low-power and small-area multistage amplifiers: A three stage amplifier is provided and the three stage amplifier comprises a first gain stage, a second gain stage and a third gain stage wherein said first stage receives an amplifier input signal and said third gain stage outputs an amplifier output signal. The amplifier includes a feedback loop... Agent: University Of Macau

20140232466 - Linear amplifier and multistage linear amplifier: Disclosed is a linear amplifier which includes: a common source transistor with the gate connected with an input node; a first common gate transistor connected with the common source transistor in a cascode type, with the drain connected with an output node; and a second common gate transistor connected in... Agent: Soongsil University Research Consortium Techno-park

20140232467 - High-frequency amplifier module and high-frequency amplifier module unit: A high-frequency amplifier module includes a driver-stage amplifier 3 that amplifies an RF signal input thereto from an RF input terminal 1, and a final-stage amplifier 5 that amplifies the signal amplified by the driver-stage amplifier 3 and outputs the signal after the amplification to an RF output terminal 7.... Agent: Mitsubishi Electric Corporation

20140232468 - Suppression circuit for suppressing unwanted transmitter output: Aspects of the disclosure relate to a frequency suppression circuit arrangement, which allows at least one selected frequency band to be suppressed by coupling the frequency suppression circuit between the input and output of an RF power amplifier. The frequency circuit in the embodiments of the disclosure down-converts a feedback... Agent: Roke Manor Research Limited

20140232469 - Rf power amplifier and method of assembly for same: In general, an RF power amplifier comprises a controller, a driver, a splitter, a final stage, and a combiner coupled together to function as the RF power amplifier. One or more of the above components are arranged on one or more motherboards, e.g., a printed circuit board (PCB). A heat... Agent: Empower Rf Systems, Inc.

20140232470 - High efficiency amplification: A radio frequency amplification stage comprising: an amplifier for receiving an input signal to be amplified and a power supply voltage; and a power supply voltage stage for supplying said power supply voltage, comprising: means for providing a reference signal representing the envelope of the input signal; means for selecting... Agent: Nujira Limited

20140232472 - Method and device for protecting a high-frequency power amplifier against a termination fault: A mismatch protection circuit for high frequency power amplifiers includes a waveguide coupler connected to the output of the high frequency power amplifier. The waveguide coupler includes a first detector diode, which supplies, according to the power level being applied, a first voltage, which corresponds to the effective power that... Agent: Tesat-spacecom Gmbh & Co. Kg

20140232471 - Radio frequency amplifying apparatus having protection voltage varying function: There is provided a radio frequency amplifying apparatus having a protection voltage varying function, including a radio frequency amplifying unit amplifying a radio frequency signal, and a protection circuit unit connected between an output node of the radio frequency amplifying unit and a ground and limiting a voltage in the... Agent: Samsung Electro-mechanics Co., Ltd.

  
08/14/2014 > 10 patent applications in 8 patent subcategories.

20140225666 - Redundant amplifier and switching method thereof: Provided is a redundant amplifier, including: a first switch for connecting, on a one-to-one basis, inputs P1 to Pm to m of outputs Q1 to Qn, where m and n are natural numbers and m<n is satisfied; a second switch for connecting, on a one-to-one basis, m of inputs R1... Agent: Nec Toshiba Space Systems, Ltd.

20140225667 - Power management in transceivers: Various embodiments are directed to apparatuses and methods to generate a first signal representing modulation data and a second signal representing an amplitude of the modulation data, the first signal and the second signal to depend on an output signal and vary a power supply voltage to a gain stage... Agent:

20140225668 - Digital predistortion apparatus and method using the sum of absolute input signals for a non-identical number of delays: The present invention relates to a digital pre-distortion apparatus, including: a coefficient control unit for setting coefficients in a look-up table, the coefficients minimizing a difference of an input signal to a power amplifier and an exponentiation of the sum of a first absolute output signal having the first number... Agent:

20140225669 - Extended variable gain amplification bandwidth with high-frequency boost: An apparatus having a circuit is disclosed. The circuit may be configured to (i) receive an input signal from a communication channel and (ii) generate an intermediate signal by amplifying the input signal (a) by a low-frequency gain in response to an amplitude control signal and (b) by a high-frequency... Agent: Lsi Corporation

20140225670 - Method and apparatus for correcting asymmetry of an input signal of an amplifier: A circuit including an amplifier, a transistor, and first, second and third resistances. The amplifier includes an input and an output. The amplifier receives an input signal. A cycle of the input signal includes first and second pulses. The input signal is asymmetrical such that the first pulse has a... Agent: Marvell World Trade Ltd.

20140225671 - High efficiency power amplifier: A high efficiency power amplifier of the present invention includes a transistor and an output power processing circuit section. The output power processing circuit section includes an output matching circuit section and an output harmonic processing circuit section. The output matching circuit section carries out impedance matching to the fundamental... Agent: The University Of Electro-communications

20140225672 - Input match network with rf bypass path: A power circuit includes a RF transistor and an input match network coupled to an input to the RF transistor and to an input to the power circuit. The input match network includes a resistor, an inductor and a first capacitor coupled together in series between the input to the... Agent:

20140225673 - Variable gain amplifier: The present disclosure provides an amplifier and associated methods of operations. An exemplary amplifier an input terminal; an output terminal; a first virtual ground node; a second virtual ground node; an operational amplifier coupled with the input terminal and the output terminal; a resistive input section coupled with an input... Agent: Analog Devices, Inc.

20140225674 - Bi-directional power supply signal based linear amplifier: Circuitry, which includes a linear amplifier, is disclosed. The linear amplifier has a linear amplifier output and includes an input amplifier stage and an output amplifier stage. The output amplifier stage at least partially provides an envelope power supply voltage to a radio frequency (RF) power amplifier (PA) via an... Agent: Rf Micro Devices, Inc.

20140225675 - Apparatus for a radio frequency integrated circuit: A low noise amplifier for radio frequency integrated circuits having an adaptive input and operating mode selection. The low noise amplifier comprises two inputs which can be operated in different configurations. The operating mode may be chosen in such way that the inputs are used respectively one at the time... Agent: Broadcom Corporation

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