| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/06/2008 | CN201018459Y Power amplifier based on high voltage great current operation amplifier |
| 02/06/2008 | CN201018458Y Complete digital signal processing audio-frequency power amplifier |
| 02/06/2008 | CN201018457Y Audio amplifier of reducing noise |
| 02/06/2008 | CN201017255Y High power high precision power-supply apparatus |
| 02/06/2008 | CN101119105A Malajustment emendation, noise detecting apparatus and method, semiconductor device and display device |
| 02/06/2008 | CN101119104A Rail-to-rail operation amplifier with high conversion ratio |
| 02/06/2008 | CN101119103A Device for correcting input offset voltage |
| 02/06/2008 | CN101119102A Signal power amplifier and signal amplification method |
| 02/06/2008 | CN101119101A Driving circuit of brushless controller power valve |
| 02/06/2008 | CN100367721C Method and system for DSL power saving |
| 02/06/2008 | CN100367499C 芯片装置 Chip device |
| 02/05/2008 | US7327620 Differential input buffer for receiving signals relevant to low power |
| 02/05/2008 | US7327458 Spectral sensitivity composing system |
| 02/05/2008 | US7327301 Single end to differential signal converter |
| 02/05/2008 | US7327194 Low voltage low power class A/B output stage |
| 02/05/2008 | US7327193 Method for setting an amplifier, and corresponding amplifier circuit |
| 02/05/2008 | US7327190 Differential amplifier arrangement |
| 02/05/2008 | US7327189 Differential structure programmable gain instrumentation amplifier |
| 02/05/2008 | US7327188 Power amplifier and method for error correcting of output signals thereof |
| 02/05/2008 | US7327187 Method, circuit and power amplifier for detecting a fault, and method of protecting a circuit in a power amplifier from a fault occurrence |
| 02/05/2008 | US7326921 Optical receiver with bias voltage adjusted according to adjustable bypass current |
| 02/05/2008 | US7326906 Digital readout system |
| 02/05/2008 | US7326905 Photodetector and optical receiver |
| 01/31/2008 | WO2008013615A2 Fast charge circuit for use in amplifiers |
| 01/31/2008 | WO2008013531A1 Amplification circuit and method therefor |
| 01/31/2008 | WO2008013481A1 A method for controlling a linear amplifier and power amplifier arrangement |
| 01/31/2008 | WO2008012904A1 Pwm signal generator, pwm signal generating device, and digital amplifier |
| 01/31/2008 | WO2008012334A1 Amplifier arrangement and method for amplification |
| 01/31/2008 | WO2007140227A3 Mode selection amplifier circuit usable in a signal acquisition probe |
| 01/31/2008 | WO2007050257A3 Active input load wide bandwidth low noise hemt amplifier |
| 01/31/2008 | US20080024229 Stacked rf power amplifier |
| 01/31/2008 | US20080024228 Hybrid output stage apparatus and related method thereof |
| 01/31/2008 | US20080024224 Low noise amplifier with low current consumption |
| 01/31/2008 | US20080024223 Circuit for improving amplification and noise characteristics for MOSFET, and frequency mixer, amplifier and oscillator using the circuit |
| 01/31/2008 | US20080024222 Voltage level shifting circuit, a differential input stage circuit, and a method for providing a level shifted differential signal to a differential input buffer circuit |
| 01/31/2008 | US20080024220 Gain-controlled amplifier |
| 01/31/2008 | US20080024219 Apparatus and method for biasing cascode devices in a differential pair using the input, output, or other nodes in the circuit |
| 01/31/2008 | US20080024218 Amplifier stage, operational amplifier and method for amplifying a signal |
| 01/31/2008 | US20080024217 Rail-to-rail operational amplifier with an enhanced slew rate |
| 01/31/2008 | US20080024216 Switching audio power amplifier and method for pop noise suppression |
| 01/31/2008 | US20080024215 Data sampler including a first stage and a second stage |
| 01/31/2008 | US20080024211 Multi-Operational Amplifier System |
| 01/31/2008 | US20080024210 Method and apparatus to correct an error in a switching power amplifier |
| 01/31/2008 | DE102004007635B4 Verstärker mit schaltbarer Gegenkopplung Amplifier with switchable feedback |
| 01/30/2008 | EP1882305A2 Circuits and methods for implementing power amplifiers for millimeter wave applications |
| 01/30/2008 | CN201015188Y Linear power amplifier device |
| 01/30/2008 | CN101116241A 电子电路 Electronic circuit |
| 01/30/2008 | CN101114817A Digital type charge amplifier |
| 01/30/2008 | CN101114816A Inverting amplifier |
| 01/30/2008 | CN101114815A Operation amplifier phase reversion and overflowing suppression circuit |
| 01/30/2008 | CN101114814A Method and apparatus to correct an error in a switching power amplifier |
| 01/30/2008 | CN101114813A Transistor series connection single end direct coupled class-a power amplification circuit |
| 01/30/2008 | CN101114812A High-frequency transformer output AC/DC amplifying unit |
| 01/30/2008 | CN101114811A Analog predistortion based linear power amplification circuit and method |
| 01/30/2008 | CN101114810A Amplifier stage, operational amplifier and method for amplifying a signal |
| 01/30/2008 | CN101114435A Driver circuit |
| 01/29/2008 | US7324799 Multiband mixer |
| 01/29/2008 | US7324791 Low-noise differential bias circuit and differential signal processing apparatus |
| 01/29/2008 | US7323945 Programmable radio transceiver |
| 01/29/2008 | US7323939 Low noise amplifier for wideband tunable matching |
| 01/29/2008 | US7323938 Amplifier circuit and light receiving apparatus |
| 01/29/2008 | US7323937 Variable-gain amplifier |
| 01/29/2008 | US7323936 Input circuit for receiving an input signal, and a method for adjusting an operating point of an input circuit |
| 01/29/2008 | US7323935 Transconductance amplifier having common mode feedback circuit and method of operating the transconductance amplifier |
| 01/29/2008 | US7323934 Operational transconductance amplifier |
| 01/29/2008 | US7323933 Vector modulator having attenuators with continuous input steering |
| 01/29/2008 | US7323932 Silicon-on-insulator differential amplifier circuit |
| 01/29/2008 | US7323929 Apparatus for and method of biasing a transistor |
| 01/29/2008 | US7323793 System and method for driving one or more loads |
| 01/29/2008 | US7323673 Modulated laser light detector with discrete fourier transform algorithm |
| 01/29/2008 | US7323671 Method and apparatus for varying a CMOS sensor control voltage |
| 01/24/2008 | WO2008010359A1 Communication device and electronic apparatus using the same |
| 01/24/2008 | WO2008009104A1 Methods and apparatuses for providing input voltages to power amplifiers |
| 01/24/2008 | US20080019546 High Efficiency Converter Providing Switching Amplifier bias |
| 01/24/2008 | US20080018510 Operational amplifier and operating method thereof |
| 01/24/2008 | US20080018405 Ultra wide band, differential input/output, high frequency amplifier in an integrated circuit |
| 01/24/2008 | US20080018404 Fast charge circuit for use in amplifiers |
| 01/24/2008 | US20080018402 Systems and arrangements for sensing current with a low loss sense element |
| 01/24/2008 | US20080018401 Variable gain amplifier with wide gain variation and wide bandwidth |
| 01/24/2008 | US20080018400 Differential Amplifier and Method |
| 01/24/2008 | US20080018396 Wideband hyperfrequency detection device |
| 01/24/2008 | US20080017785 Automatic avalanche photodiode bias setting system based on unity-gain noise measurement |
| 01/24/2008 | DE102007026023A1 Systeme, Verfahren und Vorrichtungen für lineare polare Sender Systems, methods and apparatus for linear polar transmitter |
| 01/24/2008 | DE102007026022A1 Systeme, Verfahren und Vorrichtungen für lineare EER-(Envelope Elimination and Restoration) Sender Systems, methods and apparatus for linear EER (Envelope Elimination and Restoration) transmitter |
| 01/24/2008 | DE102006032102A1 Frequenzselektiver Transimpedanzverstärker Frequency Selective transimpedance amplifier |
| 01/24/2008 | CA2658532A1 Methods and apparatuses for providing input voltages to power amplifiers |
| 01/23/2008 | EP1881611A1 Transmission circuit and communication device |
| 01/23/2008 | EP1881600A2 DC offset cancellation for a trans-impedance amplifier |
| 01/23/2008 | EP1881599A1 Frequency selective transimpedance booster |
| 01/23/2008 | EP1881598A2 Device for filtering a power supply circuit, in particular for an audio amplifier in an automobile vehicle |
| 01/23/2008 | EP1880192A2 Low power glare sensor |
| 01/23/2008 | EP1312158B1 Transmitter including a composit amplifier |
| 01/23/2008 | EP1298793B1 High-frequency amplifying device |
| 01/23/2008 | CN101111992A Polar coordinate modulation circuit, polar coordinate modulation method, integrated circuit, and radio transmission apparatus |
| 01/23/2008 | CN101110589A Transmission apparatus for differential signals |
| 01/23/2008 | CN101110577A Operational amplifier and operating method thereof |
| 01/23/2008 | CN101110576A Limiting amplifiers |
| 01/23/2008 | CN101110575A Processing method for output stage circuit, power amplification circuit and electrical signal |
| 01/23/2008 | CN101110574A Guide changing type symmetrical power amplifier |
| 01/23/2008 | CN101110571A Digital pre-distorting power amplifier and implementing method thereof |