| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/12/2009 | US20090039957 Power amplifier and method for reducing common noise of power amplifier |
| 02/11/2009 | EP2023494A1 A receiver and method for receiving wireless signal |
| 02/11/2009 | EP2023488A1 Analog insulation/multiplexer |
| 02/11/2009 | EP2023483A1 Circulator bank for use in multiband power amplifier modules |
| 02/11/2009 | EP2022169A2 Mode selection amplifier circuit usable in a signal acquisition probe |
| 02/11/2009 | EP2022168A1 Rf power amplifiers |
| 02/11/2009 | EP2022167A1 Amplifier circuit and integrated circuit therefor |
| 02/11/2009 | EP2022138A2 System and method for saturation detection, correction and recovery in a polar transmitter |
| 02/11/2009 | EP1346472B1 Closed loop active cancellation technique (act)-based rf power amplifier linearization architecture |
| 02/11/2009 | CN201194388Y TD-SCDMA power amplifier |
| 02/11/2009 | CN201192013Y Temperature-control flowerpot |
| 02/11/2009 | CN101366175A Open gain adjustment circuit for operational amplifier |
| 02/11/2009 | CN101366174A Differential amplifier |
| 02/11/2009 | CN101366173A Power amplifier and its idling current setting circuit |
| 02/11/2009 | CN101366172A Monolithic LNA support IC |
| 02/11/2009 | CN101366171A Single-ended amplifier |
| 02/11/2009 | CN101364800A Low noise switch capacitor circuit having embedded amplifier |
| 02/11/2009 | CN101364796A DC drift eliminator applied to variable gain amplifier |
| 02/11/2009 | CN101364795A High frequency power amplifier and high frequency heating device |
| 02/11/2009 | CN101364794A Amplifying circuit and display unit |
| 02/11/2009 | CN101364793A Differential amplifier, method for amplifying signals, and display driving device |
| 02/11/2009 | CN101364792A D type amplifying circuit |
| 02/11/2009 | CN101364136A Ultra low dropout voltage regulator |
| 02/11/2009 | CN101364119A Wide dynamic range and low voltage difference linear constant voltage regulator |
| 02/11/2009 | CN100461628C Differential amplifiers and semiconductor circuit |
| 02/11/2009 | CN100461627C Tri-level switch power amplifier |
| 02/11/2009 | CN100461626C D类放大器 Class D Amplifier |
| 02/11/2009 | CN100461625C AB kind amplifier |
| 02/11/2009 | CN100461624C Method for optimizing radio-frequency power amplifier and radio-frequency power amplifier system |
| 02/11/2009 | CN100461621C Power amplifier |
| 02/11/2009 | CN100461619C Power amplifier and formation method |
| 02/10/2009 | US7489909 Method and apparatus for controlling a TX power amplifier |
| 02/10/2009 | US7489908 Method and apparatus for controlling a TX power amplifier |
| 02/10/2009 | US7489202 RF amplifier with stacked transistors, transmitting device, and method therefor |
| 02/10/2009 | US7489201 Millimeter-wave cascode amplifier gain boosting technique |
| 02/10/2009 | US7489200 Gain controllable low noise amplifier and wireless communication receiver having the same |
| 02/10/2009 | US7489198 Linear regulating switch |
| 02/10/2009 | US7489197 Coupling net and MMIC amplifier |
| 02/10/2009 | US7489195 Variable gain amplifying circuit |
| 02/10/2009 | US7489194 Common gate with resistive feed-through low noise amplifier |
| 02/10/2009 | US7489193 Operational amplifier |
| 02/10/2009 | US7489190 Switching audio power amplifier with de-noise function |
| 02/10/2009 | US7489189 Power amplifier circuit reducing electromagnetic interference |
| 02/10/2009 | US7489188 Input matching apparatus and method for power amplifier using delta-sigma modulated signal |
| 02/10/2009 | US7489186 Current sense amplifier for voltage converter |
| 02/10/2009 | US7489165 Method and apparatus for amplifying a regulated differential signal to a higher voltage |
| 02/05/2009 | WO2009016716A1 Amplifier circuit |
| 02/05/2009 | WO2009016686A1 Distortion compensating apparatus and method |
| 02/05/2009 | US20090033483 Amplifier for Multi-Use of Single Environmental Sensor |
| 02/05/2009 | US20090033426 Pre-emphasis circuit |
| 02/05/2009 | US20090033425 Method and System for a Highly Efficient Power Amplifier Utilizing Dynamic Biasing and Predistortion |
| 02/05/2009 | US20090033424 Radio receiver |
| 02/05/2009 | US20090033423 Output buffer and power amplifier comprising thereof |
| 02/05/2009 | US20090033422 Multi-level slew and swing control buffer |
| 02/05/2009 | US20090033421 Differential input driver using current feedback and cross-coupled common base devices |
| 02/05/2009 | US20090033420 Operational amplifier circuit, constant voltage circuit using the same, and apparatus using the constant voltage circuit |
| 02/05/2009 | US20090033419 Class d amplifier with increased efficiency |
| 02/05/2009 | US20090033373 Circuit and Method for Trimming Integrated Circuits |
| 02/05/2009 | US20090032683 Flexible bioelectronic photodetector and imaging arrays based on bacteriorhodopsin (BR) thin films |
| 02/05/2009 | DE10297259B4 Schaltung zum automatischen Einstellen der LDMOS-Vorspannung mit Langzeitkompensation heißer Landungsträger A circuit for automatically adjusting the bias voltage LDMOS with long-term compensation of hot charge carriers |
| 02/05/2009 | DE102008033198A1 Verfahren und Vorrichtung zum Verstärken eines Signals sowie diese verwendendes Prüfgerät Method and apparatus for amplifying a signal and this-use tester |
| 02/04/2009 | EP2020684A2 Semiconductor device and offset voltage adjusting method |
| 02/04/2009 | EP2020080A2 Circuit and method for driving bulk capacitance of amplifier input transistors |
| 02/04/2009 | EP2020052A1 A device with shared power amplifiers, for use in a wireless telecommunications system |
| 02/04/2009 | CN201191824Y Radio transmitter |
| 02/04/2009 | CN101361265A Small signal amplifier with large signal output boost stage |
| 02/04/2009 | CN101359899A Thin film semiconductor device and manufacturing method |
| 02/04/2009 | CN101359898A Slew rate intensifier for dynamic CMOS operational amplifier |
| 02/04/2009 | CN101359001A Method and apparatus for amplifying signal and testing device using the same |
| 02/04/2009 | CN100459426C Single package multi-chip RF power amplifier |
| 02/04/2009 | CN100459425C Signal amplifier and integrated circuit |
| 02/04/2009 | CN100459424C Amplifier and frequency converter |
| 02/04/2009 | CN100459423C 音频放大器 Audio Amplifiers |
| 02/04/2009 | CN100459422C Switched-mode power amplifier integrally performing power combining |
| 02/04/2009 | CN100459421C Method for regulating linearity of multi-stage power amplifier |
| 02/04/2009 | CN100459420C High frequency variable gain amplification device, control device, frequency-conversion device, and communication device |
| 02/04/2009 | CN100459419C Feedback circuit providing linearized signal and method thereof |
| 02/04/2009 | CN100459418C Low voltage differential amplifier with wide voltage operation range and its operation method |
| 02/04/2009 | CN100459417C Differential amplifier in low voltage and low power consumption and high isolation |
| 02/04/2009 | CN100459416C Circuit for adjusting the operating point of multiple gate field effect transistors |
| 02/04/2009 | CN100459121C RF power transistor with internal bias feed |
| 02/04/2009 | CN100458979C Switched OPAMP technology for low-voltage switched-capacitor circuits |
| 02/04/2009 | CN100458878C Calculating amplifying circuit, driving circuit and driving method |
| 02/03/2009 | US7486938 Method and apparatus for controlling a TX power amplifier |
| 02/03/2009 | US7486143 Circuit for biasing a transistor and related system and method |
| 02/03/2009 | US7486141 Wide bandwidth, high power amplifier |
| 02/03/2009 | US7486140 Differential amplifier |
| 02/03/2009 | US7486139 Variable transconductance circuit |
| 02/03/2009 | US7486138 Bipolar audio signal switch |
| 02/03/2009 | US7486135 Configurable, variable gain LNA for multi-band RF receiver |
| 02/03/2009 | US7486133 Transmitting output stage with adjustable output power and process for amplifying a signal in a transmitting output stage |
| 02/03/2009 | US7485838 Semiconductor device comprising a photoelectric current amplifier |
| 02/03/2009 | CA2489126C Pulse width modulator circuit having negative bias |
| 01/29/2009 | WO2009014740A2 Reduced distortion radio frequency amplifiers |
| 01/29/2009 | WO2008146256A3 Integrated-circuit low-noise amplifier |
| 01/29/2009 | US20090028361 System for amplifiers with low distortion and low output impedance |
| 01/29/2009 | US20090027130 Power amplifier |
| 01/29/2009 | US20090027129 High Power RF Solid State Power Amplifier System |
| 01/29/2009 | US20090027126 Method for adaptive biasing of fully differential gain boosted operational amplifiers |
| 01/29/2009 | US20090027125 Common mode rejection calibration method for difference amplifiers |