| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 02/19/2009 | WO2009023372A1 Low noise, low power, high linearity differential amplifier with a capacitive input impedance |
| 02/19/2009 | WO2009002387A3 Rf power transistor packages with internal harmonic frequency reduction and methods of forming rf power transistor packages with internal harmonic frequency reduction |
| 02/19/2009 | WO2008148097A3 Low-power analog architecture for brain-machine interfaces |
| 02/19/2009 | US20090045879 Amplifier and Method for Operating the Same |
| 02/19/2009 | US20090045872 Integrated transceiver with envelope tracking |
| 02/18/2009 | EP2026487A1 Ofdm modulated wave output device and distortion compensation method |
| 02/18/2009 | EP2025056A1 Distortion compensator apparatus, amplifier appratus, transmitter, and method of compensating distortion |
| 02/18/2009 | EP1854208A4 Method and apparatus for an improved power amplifier |
| 02/18/2009 | EP1787386A4 An amplifier apparatus and method |
| 02/18/2009 | CN101371540A Cartesian modulation system via multi-level pulse width modulation |
| 02/18/2009 | CN101369803A Differential amplifier circuit and drive circuit of liquid crystal display unit using the same |
| 02/18/2009 | CN101369801A Distortion sensing means, automatic distortion avoiding device, and high-frequency amplifier |
| 02/18/2009 | CN100463361C Amplification device |
| 02/18/2009 | CN100463360C Distortion reducing circuit |
| 02/18/2009 | CN100463359C Current control circuit |
| 02/17/2009 | US7493238 Abnormal noise correction verification apparatus |
| 02/17/2009 | US7493180 Method for RIAA correction of audio signal with use of transformer and capacitor |
| 02/17/2009 | US7492221 Power conversion regulator with exponentiating feedback loop |
| 02/17/2009 | US7491927 Color sensing circuit employing charge storage device |
| 02/12/2009 | WO2009020537A1 Training sequence and digital linearization process for power amplifier |
| 02/12/2009 | WO2009019541A1 Wireless communication unit, integrated circuit and method of power control therein |
| 02/12/2009 | WO2009019460A1 Amplifier circuit and method of amplifying a signal in an amplifier circuit |
| 02/12/2009 | WO2009019459A1 Amplifier circuit |
| 02/12/2009 | WO2009001254A3 Pulse width modulation circuit and class-d amplifier comprising the pwm circuit |
| 02/12/2009 | US20090039965 Low-loss electrical component with an amplifier |
| 02/12/2009 | US20090039964 Low-noise amplifier circuit and receiving system |
| 02/12/2009 | US20090039963 Circuit for inhibiting over-current in power amplifier |
| 02/12/2009 | US20090039956 Amplifier circuits, imager, system and method of operation |
| 02/12/2009 | DE112004002745B4 Temperaturkompensierte Schaltung für Leistungsverstärker durch eine Diodenspannungssteuerung A temperature-compensated circuit for power amplifier through diode voltage control |
| 02/12/2009 | CA2711022A1 Amplifier circuit |
| 02/11/2009 | EP2023494A1 A receiver and method for receiving wireless signal |
| 02/11/2009 | EP2023483A1 Circulator bank for use in multiband power amplifier modules |
| 02/11/2009 | EP2022179A1 High efficiency linearization power amplifier for wireless communication |
| 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 | 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 | CN101364968A Radio transmitter using cartesian loop |
| 02/11/2009 | CN101364792A D type amplifying circuit |
| 02/11/2009 | CN101364791A Low noise amplifier with multiband variable gain |
| 02/11/2009 | CN100461628C Differential amplifiers and semiconductor circuit |
| 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 | CN100461623C Double-way sampling loop negative feedback method and two-way sampling negative feed back amplifier |
| 02/11/2009 | CN100461622C Low delay temperature compensation bias circuit for TDD mode |
| 02/11/2009 | CN100461621C Power amplifier |
| 02/11/2009 | CN100461620C Differential superimposed RF CMOS low noise amplifier |
| 02/11/2009 | CN100461619C Power amplifier and formation method |
| 02/10/2009 | US7490025 Integrated circuit with self-proofreading function, measuring device using the same and method for self-recording parameter |
| 02/10/2009 | US7489192 Low-noise amplifiers |
| 02/10/2009 | US7489191 Circuit and method for reducing bias noise in amplifier circuits |
| 02/10/2009 | US7489187 Operational amplifier and related noise separation method thereof |
| 02/05/2009 | WO2009016716A1 Amplifier circuit |
| 02/05/2009 | WO2009016686A1 Distortion compensating apparatus and method |
| 02/05/2009 | WO2008150734A3 Method and apparatus for providing a cartesian training waveform |
| 02/05/2009 | US20090033483 Amplifier for Multi-Use of Single Environmental Sensor |
| 02/05/2009 | US20090033424 Radio receiver |
| 02/05/2009 | US20090033418 Training sequence and digital linearization process for power amplifier |
| 02/05/2009 | US20090033413 Gain controlled amplifier and cascoded gain controlled amplifier based on the same |
| 02/05/2009 | US20090032682 Semiconductor Device, Module, and Electronic Device |
| 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 |
| 02/05/2009 | DE102004030543B4 Magnetspeicher/Resistiver Speicher mit einem Kalibrierungssystem Magnetic storage / Resistive memory with a calibration system |
| 02/04/2009 | EP2020760A2 Method and system for polar modulation with discontinuous phase for RF transmitters with power control |
| 02/04/2009 | EP2020087A1 An apparatus for monitoring non-linear distortions of radio signals and a method therefor |
| 02/04/2009 | CN201191816Y Mute circuit |
| 02/04/2009 | CN101361281A Antenna device and portable radio communication device comprising such antenna device |
| 02/04/2009 | CN101361265A Small signal amplifier with large signal output boost stage |
| 02/04/2009 | CN101361264A System and method for providing a transmitter for polar modulation and power amplifier linearization |
| 02/04/2009 | CN101360086A Signal processing method and system |
| 02/04/2009 | CN101360085A Method and system for processing communication signal |
| 02/04/2009 | CN101359901A Variable gain amplifier |
| 02/04/2009 | CN101359898A Slew rate intensifier for dynamic CMOS operational 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 | 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 | CN100458878C Calculating amplifying circuit, driving circuit and driving method |
| 02/03/2009 | US7486939 Apparatus for removing distortions created by an amplifier |
| 02/03/2009 | US7486144 RF power amplifier protection |
| 02/03/2009 | US7486135 Configurable, variable gain LNA for multi-band RF receiver |
| 02/03/2009 | US7486134 High efficiency load insensitive power amplifier |
| 02/03/2009 | US7486132 Variable capacitor circuit and integrated circuit containing the same |
| 02/03/2009 | CA2489126C Pulse width modulator circuit having negative bias |
| 01/29/2009 | WO2009014569A1 A variable gain stage having same input capacitance regardless of the stage gain |
| 01/29/2009 | WO2005120049A3 Ccd-based low noise parametric 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 | US20090027119 Reduced distortion radio frequency amplifiers |