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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.
09/25/2014 > 13 patent applications in 10 patent subcategories.

20140285257 - Apparatus and method for amplifying signal: An apparatus that amplifies a signal, includes an amplifier configured to amplify the signal. The apparatus further includes a current supplier configured to supply a periodically variable current to the amplifier.... Agent: Samsung Electronics Co., Ltd.

20140285258 - Silent start class-d amplifier: A Class-D amplifier includes a pre-amplifier having an input configured to receive an amplifier reference voltage signal which is ramped at start-up at a fast rate. An integrator has a first input configured to receive an input signal from the pre-amplifier and a second input configured to receive an integrator... Agent: Stmicroelectronics (shenzhen) R&d Co. Ltd.

20140285259 - Method for operating an amplifier module of a satellite: A method for operating an amplifier module of a communication satellite involves establishing an undesired state of the amplifier module, storing state data, which indicate the undesired state, in a nonvolatile memory of the amplifier module, after the undesired state has been established, and deactivating the amplifier module after the... Agent: Tesat-spacecom Gmbh & Co. Kg

20140285260 - Output buffer circuit capable of enhancing stability: An output buffer circuit of a source driver includes an operational amplifier, having a first terminal as an output of the operational amplifier, and an output control unit, coupled between the output terminal of the operational amplifier and a second terminal for driving a load, to generate a variable impedance... Agent: Novatek Microelectronics Corp.

20140285262 - Control device of power amplifier and method of controlling power amplifier: A control device of a power amplifier includes: a limiter configured to limit a level of an input signal to the power amplifier; and a control unit configured to, when the limiter operates, make an operation voltage of the power amplifier invariable and control load of an output matching circuit... Agent: Fujitsu Limited

20140285261 - Controlled power boost for envelope tracker: An envelope-tracking (ET) power supply may include a boost control pin. The boost control pin receives a boost enable signal that activates or enables a supplemental power supply in the ET power supply. The supplemental power supply facilitates the generation of a power supply signal for a selected processing stage,... Agent:

20140285263 - Power supply with tickle pulse injection: A power supply injects a series of “tickle” pulses into a pulse width modulated (PWM) controller to induce the controller to generate PWM pulses at a minimum switching frequency, preferably one that is super-sonic (especially for audio applications). The switching frequency may also be selected or controlled such that it... Agent: Bose Corporation

20140285264 - Reconfigurable output matching network for multiple power mode power amplifiers: An impedance matching network for a radio frequency (RF) amplifier includes multiple stages connected to each other in a first to last order. A first stage produces an RE output signal, and a last stage receives an RF input signal. Each stage includes a first inductor connected to produce an... Agent: Mitsubishi Electric Research Laboratories, Inc.

20140285265 - Electronic biasing circuit for constant transconductance: An electronic biasing circuit provides a DC bias voltage to a circuit to be biased. The biasing circuit has a first transistor and a second transistor. A gate of the first transistor is connected to a gate of the second transistor and supplies the DC bias voltage. A source of... Agent: Dialog Semiconductor B.v.

20140285266 - Amplification device and transmitter: According to one embodiment, an amplification device includes an input terminal into which an input signal is inputted, a first amplifier, an output terminal, a variable impedance module connected at an output end of the first amplifier, a second amplifier, a reference impedance element connected at an output end of... Agent: Kabushiki Kaisha Toshiba

20140285267 - Power amplifier saturation detection: In a portable radio transceiver, a power amplifier system includes a saturation detector that detects power amplifier saturation in response to duty cycle of the amplifier transistor collector voltage waveform. The saturation detection output signal can be used by a power control circuit to back off or reduce the amplification... Agent: Skyworks Solutions, Inc.

20140285268 - Radio frequency amplifying circuit and power amplifying module: An radio frequency amplifying circuit includes an amplifying transistor configured to amplify a radio frequency signal input to a base of the amplifying transistor via a matching network to output the amplified radio frequency signal, a first bias transistor connected to the amplifying transistor based on a current-mirror connection to... Agent: Murata Manufacturing Co., Ltd.

20140285269 - 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

09/18/2014 > 50 patent applications in 28 patent subcategories.

20140266421 - Nanoscale electromechanical parametric amplifier: This disclosure provides systems, methods, and apparatus related to a parametric amplifier. In one aspect, a device includes an electron source electrode, a counter electrode, and a pumping electrode. The electron source electrode may include a conductive base and a flexible conductor. The flexible conductor may have a first end... Agent: The Regents Of The University Of California

20140266422 - Dc blocker for a high gain complex circuit: An amplifying circuit comprises an analog amplifying circuit having an analog input for receiving an analog input signal to be amplified and an analog output for outputting an amplified analog signal, wherein the amplifying circuit comprises an implementation of a complex transfer function. A feedback circuit has a feedback circuit... Agent: Dialog Semiconductor B.v.

20140266423 - Envelope tracking system with internal power amplifier characterization: An RF PA system that generates its own local characterization information. The RF PA system includes a PA to generate a RF output signal from a RF input signal, the PA powered by a supply voltage. A characterization block generates characterization information corresponding to a relationship between the supply voltage... Agent: Quantance, Inc.

20140266424 - Bi-directional amplifier with a common signal detector: A system of detecting signal power may include a first interface port configured to receive a first signal. The system may also include a second interface port communicatively coupled to the first interface port and configured to receive a second signal. The second interface port may be communicatively coupled to... Agent: Wilson Electronics, LLC

20140266425 - Bi-directional amplifier with a common amplification path: According to some embodiments described herein, a bi-directional amplifier may include a first interface port configured to receive a first signal. The bi-directional amplifier may also include a second interface port. The second interface port may be communicatively coupled to the first interface port and may be configured to receive... Agent: Wilson Electronics, LLC

20140266428 - Envelope tracking power supply voltage dynamic range reduction: A radio frequency (RF) system includes an RF power amplifier (PA), which uses an envelope tracking power supply voltage to provide an RF transmit signal, which has an RF envelope; and further includes an envelope tracking power supply, which provides the envelope tracking power supply voltage based on a setpoint.... Agent: Rf Micro Devices, Inc.

20140266427 - Noise conversion gain limited rf power amplifier: A radio frequency (RF) power amplifier (PA) and an envelope tracking power supply are disclosed. The RF PA receives and amplifies an RF input signal to provide an RF transmit signal using an envelope power supply voltage. The envelope tracking power supply provides the envelope power supply voltage based on... Agent: Rf Micro Devices, Inc.

20140266426 - Self setting power supply using negative output impedance: A self-setting power supply monitors a supply current drawn by a power amplifier and sets a supply voltage based on the supply current to achieve efficient power operation. In order to maintain operation of the power amplifier above minimum operating conditions, the self-setting power supply sets the supply voltage to... Agent: Quantance, Inc.

20140266429 - Power management/power amplifier operation under dynamic battery drops: In one embodiment, a digital internal amplified voltage of power management circuitry is forced to an input threshold voltage upon a determination that a set of emergency conditions is satisfied, and is set to an input minimum battery voltage upon a determination that the set of emergency conditions is not... Agent: Rf Micro Devices, Inc.

20140266430 - Tube amplifier systems and related methods: An amplifier stage module circuit has a tube connected with an anode section, a grid section, a cathode section, and an attenuator section. The amplifier stage module circuit is configurable to provide any one of a plurality of selectable voices, each voice provided by a corresponding combination of selectively combinable... Agent:

20140266432 - Amplifier phase distortion correction based on amplitude distortion measurement: 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... Agent:

20140266431 - Under-sampling digital pre-distortion architecture: A amplifier system may include a predistorter receiving an input signal to generate a predistortion signal, a first converter receiving the predistortion signal to generate a preamplified signal, a power amplifier receiving the preamplified signal to generate an output signal based on the preamplified signal and the input signal, and... Agent: Analog Devices Technology

20140266433 - Systems and methods for optimizing amplifier operations: 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... Agent: Peregrine Semiconductor Corporation

20140266434 - Circuits for and methods of implementing a gain stage in an integrated circuit: A circuit for implementing a gain stage in an integrated circuit is described. The circuit comprises a first inductor formed in a first plurality of metal layers; a second inductor formed in a second plurality of metal layers, the second inductor coupled to a center tap of the first inductor;... Agent: Xilinx, Inc.

20140266437 - Active cascode circuit using backgate control: An example embodiment of an active cascode circuit has a control circuit for control of the gate to source voltage (VGS) of at least one transistor in the active cascode circuit. The embodiment may be configured so that control of the VGS also controls the voltage Vin on the input.... Agent: Analog Devices, Inc.

20140266436 - Sense amplifier: The present disclosure relates to a differential sense amplifier comprising first and second cross-coupled inverters with first and second complimentary storage nodes. A first current control element changes a current through the first cross-coupled inverter based upon an output of a second cross-coupled inverter, and a second current control element... Agent: Taiwan Semiconductor Manufacturing Co., Ltd.

20140266438 - Signal amplifying circuit for electromagnetic flow meter: In a signal amplifying circuit, a flow rate signal, inputted between flow rate signal input terminals of a connector, is inputted into one input terminal and the other input terminal of an instrumentation amplifier through resistive elements and subjected to differential amplification. The amplified output signal thereof is outputted to... Agent: Azbil Corporation

20140266435 - Translinear slew boost circuit for operational amplifier: A method of improving the slew rate of an amplifier is described where a differential pair of transistors receives a differential first control signal and second control signal. The tail current for the transistors is provided by a tail current regulator. The same control signals are applied to a slew... Agent: Linear Technology Corporation

20140266439 - Methods and systems to provide low noise amplification: An amplifier, including a voltage-to-current converter (V2I) to control an output current based on an input voltage, resistive degeneration circuitry to reduce baseband gain of the voltage-to-current converter, capacitive degeneration circuitry to increase passband gain of the voltage-to-current converter, and impedance control circuitry to compensate for negative input impedance of... Agent:

20140266440 - Offset cancellation with minimum noise impact and gain-bandwidth degradation: A system for cancelling offset includes a gain circuit. The gain circuit may include a transistor circuit connected to a pair of input nodes and configured to convert an input signal to an output signal so that the output signal has a gain compared with the input signal. The gain... Agent:

20140266441 - Three stage amplifier: A cascaded amplifier including a pre-amplifier stage having a pair of first transistors, each of the first transistors having a first gate terminal coupled to a first input voltage, a trans-conductive (gm) amplifier stage having a pair of second transistors, each of the second transistors having a second gate terminal... Agent: Analog Devices, Inc.

20140266442 - Voltage controlled amplifier and method of using the same: A simplified VCA circuit is presented. The VCA of the present invention uses fewer components and is less complex than prior art OTA-based VCAs. Further, the VCA of the present invention has improved total harmonic distortion (THD) and DC offset characteristics as compared to prior art VCAs. The VCA may... Agent: Rgb Systems, Inc.

20140266443 - High-frequency, broadband amplifier circuit: According to one embodiment, a high-frequency, broadband amplifier circuit includes two drive elements, a matching circuit, a Balun circuit, a power supply, and a power supply circuit. The matching circuit includes two pattern circuits. The pattern circuits convey, in differential mode, the high-frequency signals supplied from the two drive elements.... Agent: Kabushiki Kaisha Toshiba

20140266444 - Power amplifier system with supply modulation mitigation circuitry and methods: A power amplifier system with supply modulation mitigation circuitry and methods is disclosed. The power amplifier system includes a regulator having an unregulated input and a regulated output along with a power amplifier having a supply input for receiving a supply current from the regulated output and having a signal... Agent: Rf Micro Devices (cayman Islands), Ltd.

20140266446 - Active lumped element circulator: An integrated circuit can comprise: a first port, a second port, and a third port; and a plurality of microwave operational amplifiers coupled to each other and the first port, the second port, and the third port. The plurality of microwave operational amplifiers can be arranged to substantially pass a... Agent:

20140266445 - Low-power inverter-based differential amplifier: A new inverter-based fully-differential amplifier is provided including one or more common-mode feedback transistors coupled to each inverter, which transistors operate in the liner region. Accordingly, due to the fully-differential nature of the new inverter-based fully-differential amplifier, the amplifier provides an improved Power Supply Rejection Ratio (PSRR), provides a reduced... Agent: Texas Instruments Incorporated

20140266447 - Voltage regulators, amplifiers, memory devices and methods: Circuits, devices and methods are provided, such as an amplifier (e.g., a voltage regulator) that includes a feedback circuit that supplies negative feedback through a feedback path. One such feedback path includes a capacitance coupled in series with a “one-way” isolation circuit through which a feedback signal is coupled. The... Agent: Micron Technology, Inc.

20140266448 - Adapative power amplifier: Exemplary embodiments are related to an envelope-tracking power amplifier. A device may include a first transistor of a plurality of transistors in a stacked configuration configured to receive a supply voltage varying with an envelope of a radio-frequency (RF) input signal. The device may further include a second transistor of... Agent: Qualcomm Incorporated

20140266449 - Methods and apparatuses for slew rate enhancement of amplifiers: A circuit is disclosed to enhance slew rate of an amplifier. An amplifier includes an output, a first input, and a second input in a differential pair configuration. A slew rate enhancer includes a first slew rate enhancer and a second slew rate enhancer. The first slew direction enhancer is... Agent: Integrated Device Technology, Inc.

20140266450 - Method and apparatus for implementing wide data range and wide common-mode receivers: Embodiments of disclosed configurations include a circuit and system for a sense amplifier having a sensing circuit changing an output voltage at an output node based on a time that is defined by the output voltage reaching a threshold voltage level. The sensing circuit changes the output voltage at the... Agent: Silicon Image, Inc.

20140266451 - Power amplifier with wide dynamic range am feedback linearization scheme: Circuitry, which includes a package interface, a radio frequency (RF) amplification circuit, and a closed-loop gain linearization circuit. The package interface receives an RF signal and provides an amplified RF signal. The RF amplification circuit amplifies the RF signal in accordance with a gain of the RF amplification circuit so... Agent: Rf Micro Devices (cayman Islands), Ltd.

20140266452 - Rf power amplifier with total radiated power stabilization: A radio frequency (RF) amplification circuit and a closed-loop amplitude linearization circuit are disclosed. The RF amplification circuit amplifies an RF signal to generate an amplified RF signal. The RF amplification circuit and the closed-loop amplitude linearization circuit form a fast control loop and a slow control loop. The slow... Agent: Rf Micro Devices (cayman Islands), Ltd.

20140266453 - Transimpedance amplifier (tia) circuit and method: A TIA circuit and method are provided that merge the automatic gain control function with the bandwidth adjustment function to allow the TIA circuit to operate over a wide dynamic range at multiple data rates. The TIA circuit has an effective resistance that is adjustable for adjusting the gain and... Agent: Avago Technologies GeneralIP(singapore) Pte. Ltd.

20140266454 - Lna with linearized gain over extended dynamic range: A low noise amplifier including a variable gain amplifier stage configured to accept an input signal and to provide a load driving signal; a tunable bandpass filter connected as a load to the variable gain amplifier stage, wherein the bandpass filter includes a cross-coupled transistor pair, and at least one... Agent: Innophase, Inc.

20140266455 - Variable impedance match and variable harmonic terminations for different modes and frequency bands: An amplifier with switchable and tunable harmonic terminations and a variable impedance matching network is presented. The amplifier can adapt to different modes and different frequency bands of operation by appropriate switching and/or tuning of the harmonic terminations and/or the variable impedance matching network.... Agent: Peregrine Semiconductor Corporation

20140266456 - Device and method for controlling power amplifier: A device for controlling operation of a power amplifier includes a detector, a reference signal generator and a controller. The detector is configured to detect a voltage level of an output signal of the power amplifier with respect to a predetermined boost threshold and to generate a corresponding detection signal... Agent:

20140266457 - Gain and phase calibration for closed loop feedback linearized amplifiers: Embodiments of a radio frequency (RF) amplification device having an RF amplification circuit and an amplifier control circuit operably associated with the RF amplification circuit are disclosed. The RF amplification circuit is configured to amplify an RF signal in accordance with a transfer function. The amplifier control circuit includes a... Agent: Rf Micro Devices (cayman Islands), Ltd.

20140266458 - Rf replicator for accurate modulated amplitude and phase measurement: The disclosure provides a communication circuit including an amplification circuit, a replicator circuit, and a correction circuit. Specifically, the amplification circuit generates an amplified signal. The replicator circuit emulates the amplification circuit and generates a replicated signal that approximates the amplified signal. The replicated signal is used by the correction... Agent: Rf Micro Devices (cayman Islands), Ltd.

20140266459 - Rf power amplifier with pm feedback linearization: Circuitry, which includes a package interface, an RF amplification circuit, and a closed-loop phase linearization circuit, is disclosed. The package interface receives an RF signal and provides an amplified RF signal. The RF amplification circuit amplifies the RF signal to generate the amplified RF signal, such that an intermediate RF... Agent: Rf Micro Devices (cayman Islands), Ltd.

20140266464 - Apparatus and method for asymmetrically driven partial outphasing power amplifier: Apparatus and method embodiments are provided for improving power efficiency in an outphasing amplifier with a non-isolating combiner. The embodiments include reducing the driving power to two power amplifiers (PAs) of the amplifier circuit in the low input signal power region in an asymmetric manner between the two PAs. An... Agent: Futurewei Technologies, Inc.

20140266465 - Apparatus and method for multilevel lossless outphasing power amplifier: System and method embodiments are provided for a multilevel outphasing amplifier architecture with a non-isolating or lossless combiner. The multilevel outphasing amplifier with lossless combiner improves power efficiency in comparison to outphasing amplifiers with lossless combiners. The multilevel outphasing amplifier applies different voltage levels to the power amplifiers (PAs) of... Agent: Futurewei Technologies, Inc.

20140266463 - Linear amplifier arrangement for high-frequency signals: The invention relates to an amplifier arrangement for high-frequency signals. Said amplifier arrangement comprises a signal input (IN) for receiving high-frequency signals (RFin) that are to be amplified, a first amplifier device (Mn1, Mn2) that amplifies the high-frequency signals that are to be amplified, the first amplifier device having a... Agent: Rwth Aachen

20140266462 - Low power consumption adaptive power amplifier: An adaptive power amplifier that may be used in a wireless communication device is configured to adjust its load line or output impedance, the number of active amplifier cells in each amplification stage, the bias of the active amplifiers, and the supply voltage input capacitive load in accordance with a... Agent: Motorola Mobility LLC

20140266460 - Scalable periphery tunable matching power amplifier: A scalable periphery tunable matching power amplifier is presented. Varying power levels can be accommodated by selectively activating or deactivating unit cells of which the scalable periphery tunable matching power amplifier is comprised. Tunable matching allows individual unit cells to see a constant output impedance, reducing need for transforming a... Agent: Peregrine Semiconductor Corporation

20140266461 - Split amplifiers with improved linearity: Split amplifiers with configurable gain and linearization circuitry are disclosed. In an exemplary design, an apparatus includes first and second amplifier circuits and a linearization circuit, which may be part of an amplifier. The first and second amplifier circuits are coupled in parallel and to an amplifier input. The linearization... Agent: Qualcomm Incorporated

20140266466 - Internally, resistively, sensed darlington amplifier: An internally, resistively, sensed Darlington amplifier includes a Darlington amplifier, at least an input transistor, an output transistor, a resistive divider, a signal input node, and a signal output node. The Darlington amplifier is responsive to an input signal and configured to generate an output signal. An internal bias setting... Agent: Hittite Microwave Corporation

20140266467 - System and method for reducing stress in a cascode common-source amplifier: A method of reducing stress in a cascode common-source amplifier including a first transistor and a second transistor connected in a cascode arrangement. The method includes providing an input voltage and a bias voltage to the first transistor and the second transistor, respectively, connected in the cascode arrangement, generating, based... Agent: Marvell World Trade Ltd.

20140266468 - Tracking power supply with increased boost capability: A tracking power supply for one or more amplifiers includes one or more cascaded sets of power boost circuits to temporarily boost the positive and/or negative power supply rail, respectively. Each power boost circuit may include a gain element and an energy source such as a capacitor or battery, and... Agent:

20140266469 - Current re-using wideband low-noise active balun: Some aspects of the present disclosure relate to a low-noise amplifier (LNA) having a balun configuration. The LNA includes a DC current path coupling a first DC supply node to a second DC supply node. First and second output nodes and first and second input nodes are spaced apart along... Agent:

20140266470 - Transformer-based power amplifier stabilization and reference distortion reduction: This disclosure relates generally to radio frequency (RF) amplification devices and methods of operating the same. In one embodiment, an RF amplification device includes an RF amplification circuit and a stabilizing transformer network. The RF amplification circuit defines an RF signal path and is configured to amplify an RF signal... Agent: Rf Micro Devices, Inc.

09/11/2014 > 40 patent applications in 13 patent subcategories.

20140253230 - Method for operating a traveling-wave tube module: A method for operating a traveling-wave tube module of a communication satellite involves receiving of a high-frequency signal from an antenna of the satellite and determining that the high-frequency signal is to be amplified. The cathode current of a traveling-wave tube is increased to a predetermined operating value if the... Agent: Tesat-spacecom Gmbh & Co. Kg

20140253231 - Method for operating an amplifier module of a satellite: A method for operating an amplifier module of a communication satellite involves saving at least one configuration parameter of the amplifier module in a non-volatile memory designed to store the configuration parameter when the amplifier module is not energized. The configuration parameter can be loaded from the non-volatile memory and... Agent: Tesat-spacecom Gmbh & Co. Kg

20140253232 - Amplifier circuit: An amplifier circuit includes: a first filter that receives input of amplitude information of an input signal, and performs filtering so that a gain of a frequency component higher than a first cutoff frequency becomes greater than a gain of a frequency component lower than the first cutoff frequency; a... Agent: Fujitsu Limited

20140253233 - Current conveyor circuit and method: A system includes a first variable gain amplifier configured to receive an input signal and a first down-mixer coupled to the first variable gain amplifier. Also, the system includes a first current conveyor coupled to the first down mixer, where the first current conveyor includes a first cascode and a... Agent: Futurewei Technologies, Inc.

20140253234 - Differential power amplifier using mode injection: Disclosed is a differential power amplifier using mode injection, which includes: a first transistor of which the gate receives a first signal and the source is connected to the ground; a second transistor of which the gate receives a second signal and the source is connected to the ground; a... Agent: Soongsil University Research Consortium Techno-park

20140253235 - Variable gain amplifier: According to an embodiment, a variable gain amplifier includes a differential transistor pair including a first and second transistor. A variable resistor for setting a gain is connected between electrodes the transistor pair. A first variable capacitor is connected to an electrode of the first transistor, and a second variable... Agent: Kabushiki Kaisha Toshiba

20140253237 - Amplifier, a residue amplifier, and an adc including a residue amplifier: An amplifier, comprising: an input node; an output node; a gain stage having a gain stage inverting input, a gain stage non-inverting input and a gain stage output; a feedback capacitor connected in a signal path between the gain stage output and the gain stage inverting input; a sampling capacitor... Agent: Analog Devices Technology

20140253236 - Generating negative impedance compensation: Apparatuses for generating negative impedance compensation are provided. Embodiments include a differential amplifier having a first output and a second output; a capacitor coupled between the first output and the second output of the differential amplifier; a first negative impedance cross-coupled circuit having a first output and a second output;... Agent: International Business Machines Corporation

20140253238 - Class ab amplifiers: An amplifier including first, second, third, and fourth switches, each having first and second terminals. The first terminal of each switch communicates with a respective load. The second terminal of the first switch communicates with the second terminal of the second switch. The second terminal of the third switch communicates... Agent: Marvell World Trade Ltd.

20140253240 - Circuit of operational amplifier: A circuit of an operational amplifier includes an operational main circuit, a plurality of current sources, and at least one clamp circuit. The current sources are configured to connect the operational main circuit to a high voltage source or a ground voltage source. The clamp circuit is connected between the... Agent: Novatek Microelectronics Corp.

20140253241 - High electron mobility transistor device: A high electron mobility transistor (HEMT) device includes a buffer layer on a substrate; a face-inversion layer on a part of the buffer layer; a plurality of semiconductor layers on the face-inversion layer and on the buffer layer; and a source electrode, a drain electrode, and a gate electrode on... Agent: Samsung Electronics Co., Ltd.

20140253239 - Low-noise signal amplifying circuit and method thereof: A signal amplifying circuit includes: a first transistor having a first connecting terminal coupled to an input signal, and a controlling terminal coupled to a first reference voltage; an adjustable resistive circuit having a first terminal coupled to a second connecting terminal of the first transistor; and a second transistor... Agent: Rafael Microelectronics, Inc.

20140253242 - Amplifiers with inductive degeneration and configurable gain and input matching: Amplifiers with inductive degeneration and configurable gain and input matching are disclosed. In an exemplary design, an apparatus includes a gain transistor, an inductor, and an input matching circuit for an amplifier. The gain transistor has a variable gain determined based on its bias current. The inductor is coupled between... Agent:

20140253243 - Power amplifying module: A power amplifying module includes a radio frequency amplifying circuit including an amplifying circuit configured to amplify an input signal and output an amplified signal, and a bias circuit of an emitter-follower type configured to bias the amplifying circuit to an operating point, and a constant voltage generating circuit configured... Agent: Murata Manufacturing Co., Ltd.

20140253244 - Power amplifier spurious cancellation: This disclosure relates generally to power amplification devices and methods of operating the same. The power amplification devices are capable of reducing (and possibly cancelling) modulation of a ripple variation of a supply voltage level of a supply voltage onto a radio frequency (RF) signal. In one embodiment, a power... Agent: Rf Micro Devices, Inc.

20140253245 - Interference tolerant, broadband radio frequency amplifier: A distributed RF amplifier includes filter circuits to band limit input signal components applied to corresponding amplifiers. Different amplifiers in the distributed amplifier may be band limited to different pass bands. The different pass bands may collectively cover an operational frequency range of the distributed amplifier. In this manner, band-limited... Agent: Auriga Measurement Systems, LLC

20140253248 - Phase shift and attenuation circuits for use with multiple-path amplifiers: Embodiments of circuits for use with an amplifier that includes multiple amplifier paths include a first series circuit and a second series circuit in parallel with the first series circuit. The first series circuit includes a first input coupled to a first power divider output, a first output coupled to... Agent: Freescale Semiconductor, Inc.

20140253247 - Power amplifying device and transmitter: Certain embodiments provide a power amplifying device including: a distribution line which distributes power; a plurality of power amplifying elements; a connection line; an output line; a filter; a first directional coupler; and a second directional coupler. The power amplifying elements is provided at a stage subsequent to the distribution... Agent: Kabushiki Kaisha Toshiba

20140253246 - Wideband doherty amplifier network: The present invention is directed to an amplifier system that includes a main amplifier configured to amplify and a peak amplifier that operates only in a high power mode. An impedance matching network is coupled to at least the peak power amplifier. An impedance transformation device is coupled to at... Agent: Anaren, Inc

20140253249 - Circuit for providing a flat gain response over a selected frequency range and method of use: An integrated circuit is disclosed. The integrated circuit includes an amplifier and a capacitor array coupled to the amplifier. The capacitor array is configured to be coupled in parallel to an inductor that is external to the integrated circuit, and the capacitor array and the external inductor comprise a tank... Agent: Mediatek Singapore Pte. Ltd.

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

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