Patents
Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
09/2010
09/30/2010US20100244949 Composite Amplifier, a Radio Terminal and a Method for Improving the Efficiency of the Composite Amplifier
09/30/2010US20100244948 Multiple-input and multiple-output amplifier using mutual induction in the feedback network
09/30/2010US20100243866 Imaging devices and methods for charge transfer
09/29/2010EP2234271A2 Amplifier Circuit and Transceiver
09/29/2010EP2234270A1 Digital audio device
09/29/2010EP2002538B1 Class l amplifier
09/29/2010EP1756944B1 Current-mode instrumentation amplifier
09/29/2010EP1597824B1 A method and a device for adjusting power amplifier properties
09/29/2010EP1377994B1 Tunable ferro-electric filter
09/29/2010CN201594809U Closed-loop D type audio amplifier system and audio amplifier
09/29/2010CN1996749B Differential amplifier, data driver and display device
09/29/2010CN1992512B Differential amplifier and display device using the same
09/29/2010CN1898861B Radio frequency (rf) and/or microwave power amplification device and corresponding radio communication terminal
09/29/2010CN1838527B 功率放大器 PA
09/29/2010CN101849354A Multi-mode power amplifier with high efficiency under backoff operation
09/29/2010CN101848005A Transmitter
09/29/2010CN101847972A Amplifier circuit and transceiver
09/29/2010CN101847971A Operational amplifier
09/29/2010CN101847970A Digital system with reconfigurable function
09/29/2010CN101847969A Class d amplifier circuit
09/29/2010CN101847968A High-performance D type audio power amplifier with high-order multipath feedback structure
09/29/2010CN101847967A Radio-frequency power amplifier circuit
09/29/2010CN101847627A Semiconductor chip of integrated passive element and power amplifier element
09/29/2010CN101394154B Automatic gain dual channel audio pre-amplifier
09/29/2010CN101373956B Method for compensating common mode feedback circuit frequency of two-stage amplifier
09/29/2010CN101373631B Signal receiver
09/29/2010CN101325402B Audio power amplifier with improved low frequency performance
09/29/2010CN101221714B Driving device
09/29/2010CN101178330B Photocurrent sensing circuit as well as photosensor and electronic device
09/29/2010CN101149893B Semiconductor device, and display device and electronic apparatus using the same
09/29/2010CN101102120B Wireless communication apparatus
09/28/2010US7804366 Millimeter wave monolithic integrated circuits
09/28/2010US7804365 Multilayer amplifier module
09/28/2010US7804364 Absolute power detector
09/28/2010US7804363 Open loop DC control for a transimpedance feedback amplifier
09/28/2010US7804362 Distributed amplifier with negative feedback
09/28/2010US7804361 Low noise amplifier
09/28/2010US7804360 Dead-time locking circuit
09/28/2010US7804358 Device with shared power amplifiers, for use in a wireless telecommunications system
09/28/2010US7804357 Distributed amplifier
09/28/2010US7804333 Input buffer circuit
09/28/2010US7804286 Multiple output amplifiers and comparators
09/28/2010US7804109 Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the same
09/28/2010CA2593721C Alternating digital rf modulation
09/28/2010CA2575648C Linear capacitance measurement and touchless switch
09/28/2010CA2425668C Multiple-voltage supply power amplifier with dynamic headroom control
09/23/2010WO2010108193A1 Passive differential voltage doubler
09/23/2010WO2010108044A1 Digital filtering in a class d amplifier system to reduce noise fold over
09/23/2010WO2010108039A1 Cascode amplifier with protection circuitry
09/23/2010WO2010108030A2 Common-gate common-source amplifier
09/23/2010WO2010108029A1 Transconductance bias circuit, amplifier and method
09/23/2010WO2010107561A1 On-chip millimeter wave lange coupler
09/23/2010WO2010107273A2 Amplifying driving unit using giant magneto resistance sensor and diagnosis device using the same
09/23/2010WO2010088110A3 Amplification system for interference suppression in wireless communications
09/23/2010US20100240336 Front end and high frequency receiver having quadrature low noise amplifier
09/23/2010US20100240332 Power amplifier circuit, and transmitter and wireless communication device using the same
09/23/2010US20100240331 Power amplifying circuit, and transmitter and wireless communication device using the same
09/23/2010US20100240329 Amplifying device and transmitter apparatus
09/23/2010US20100237950 Transconductance bias circuit, amplifier and method
09/23/2010US20100237945 Cascode amplifier with protection circuitry
09/23/2010US20100237944 Amplifier System With Digital Adaptive Power Boost
09/23/2010US20100237943 Auto gain controllers, and communication terminals having the same
09/23/2010US20100237942 Common-gate common-source amplifier
09/23/2010US20100237941 Wideband rf amplifiers
09/23/2010US20100237229 Photoelectric conversion device and electronic device provided with the photoelectric conversion device
09/23/2010US20100237228 CMOS Image Sensor Pixel With Internal Charge Amplifier
09/23/2010CA2750412A1 On-chip millimeter wave lange coupler
09/22/2010EP2230762A2 Active distributed signal splitting apparatus
09/22/2010EP2230761A1 Current conveyor based instrumentation amplifier
09/22/2010EP2230760A2 Wireless apparatus and distortion compensation method used on time division duplex system
09/22/2010EP2229726A1 Transmitter comprising a pulse width pulse position modulator and method thereof
09/22/2010EP2229725A2 Automatic power source configuration
09/22/2010EP2229695A2 Monolithically integrated antenna- and receiver circuit for the detection of terahertz waves
09/22/2010CN201590808U Level conversion circuit of push-pull amplifier
09/22/2010CN201590807U Power amplifier with playing function of MP3 (Moving Picture Experts Group Audio Layer-3)
09/22/2010CN201590806U Silicon carbide wide band high-power amplifier device
09/22/2010CN201590805U Low noise amplifier and radio-frequency signal receiver
09/22/2010CN201590804U Audio-frequency amplifier circuit with noise suppression
09/22/2010CN1933324B Differential operational amplifier
09/22/2010CN101842978A Power amplifier and power amplifier control method
09/22/2010CN101842977A Automatic power source configuration
09/22/2010CN101841333A Low-jitter clock buffer for analogue-digital/digital-analogue converter
09/22/2010CN101841309A Rail-to-rail operational amplifier
09/22/2010CN101841308A Structure of high performance operational amplifier
09/22/2010CN101841307A Class d amplifier circuit
09/22/2010CN101841306A Power amplifier
09/22/2010CN101841305A Power amplifying device and power amplifying method
09/22/2010CN101841240A Power supply converter and error amplifier
09/22/2010CN101425784B Non-filter D type audio amplifier based on chaotic spread-spectrum modulation technique
09/22/2010CN101228689B Highly efficient amplifier
09/21/2010US7801296 xDSL-line-interface-circuit
09/21/2010US7800970 Sense amplifier and semiconductor memory device having the same
09/21/2010US7800450 Re-configurable low noise amplifier utilizing feedback capacitors
09/21/2010US7800449 Single-ended-to-differential converter with common-mode voltage control
09/21/2010US7800448 Doherty amplifier
09/21/2010US7800447 Operational amplifier with improved current monitoring and scalable output
09/21/2010US7800446 Method and system for varying gain exponentially with respect to a control signal
09/21/2010US7800445 Low headroom X-bridge transconductor
09/21/2010US7800444 Class D amplifier
09/21/2010US7800442 Output networks in combination with LINC technique