| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 03/02/2005 | CN1191674C Class D amplifier |
| 03/02/2005 | CN1191673C High-efficiency sectional power amplifier |
| 03/02/2005 | CN1191565C Operational amplifying circuit and driving cirvuit |
| 03/01/2005 | US6862437 Dual band tuning |
| 03/01/2005 | US6862322 Switchable-bandwidth optical receiver |
| 03/01/2005 | US6862041 Circuit for processing charge detecting signal having FETS with commonly connected gates |
| 03/01/2005 | US6861985 Ferroelectric antenna and method for tuning same |
| 03/01/2005 | US6861910 Multistage amplifier and integrated circuit |
| 03/01/2005 | US6861909 High voltage-wide band amplifier |
| 03/01/2005 | US6861908 2-stage large bandwidth amplifier using diodes in the parallel feedback structure |
| 03/01/2005 | US6861907 Power amplifier |
| 03/01/2005 | US6861906 High-frequency semiconductor device |
| 03/01/2005 | US6861905 Power amplifier system and mobile communication terminal device |
| 03/01/2005 | US6861903 Signal coupling systems with enhanced isolation and dynamic range |
| 03/01/2005 | US6861902 Self oscillating power amplifier |
| 03/01/2005 | US6861901 Voltage follower circuit |
| 03/01/2005 | US6861896 Circuits with dynamic biasing |
| 03/01/2005 | US6860576 Drive circuit, printhead and printing apparatus |
| 02/24/2005 | WO2005018089A1 Audio power amplifier |
| 02/24/2005 | WO2005018088A2 Low power consumption adaptive power amplifier |
| 02/24/2005 | WO2005018041A2 Low noise, electric field sensor |
| 02/24/2005 | WO2005017956A2 Temperature-insensitive bias circuit for high-power amplifiers |
| 02/24/2005 | WO2005017942A2 High-frequency excitation system comprising a limiting circuit |
| 02/24/2005 | WO2004062096A3 Subtractor circuit and power detector device provided with said subtractor circuit |
| 02/24/2005 | US20050043007 Integrated low noise amplifier |
| 02/24/2005 | US20050043004 Communication apparatus, electronic equipment with communication functions, communication function circuit, amplifier circuit and balun circuit |
| 02/24/2005 | US20050041985 Transimpedance amplifier |
| 02/24/2005 | US20050041343 Voltage limiting semiconductor pass gate circuit |
| 02/24/2005 | US20050041021 Circuit having source follower and semiconductor device having the circuit |
| 02/24/2005 | US20050040892 Transimpedance amplifier with receive signal strength indicator |
| 02/24/2005 | US20050040891 System and method for a programmable gain amplifier |
| 02/24/2005 | US20050040889 Differential amplifier, data driver and display device |
| 02/24/2005 | US20050040886 Switched-capacitor amplifier and analog interface circuit for charge coupled element adopting the same |
| 02/24/2005 | US20050040883 Semiconductor integrated circuit device |
| 02/24/2005 | DE10392486T5 Stromabschaltkreis für aktive Vorspannungsschaltkreise mit Prozessvariationskompensation Stromabschaltkreis for active biasing circuits with process variation compensation |
| 02/24/2005 | DE102004033608A1 Verstärker mit variabler Verstärkung zur linearen Verstärkung in Dezibel Variable gain amplifier to the linear gain in decibels |
| 02/23/2005 | EP1508966A1 Feedback amplifier having amplified signal path and feedback signal path separated |
| 02/23/2005 | CN2681492Y Broadband amplifier module for cable TV |
| 02/23/2005 | CN1585265A Circuit having source follower and semiconductor device having the circuit |
| 02/23/2005 | CN1585264A Power amplifying system and method for generating pre-distortion signals |
| 02/23/2005 | CN1585259A DPS based intellectual high speed magnetic suspension control and analog power amplifying device |
| 02/23/2005 | CN1585258A DPS based intellectual high speed magnetic suspension control and digital power amplifying device |
| 02/23/2005 | CN1190956C HF signal switching circuit for suppressing HF signal distortion |
| 02/23/2005 | CN1190909C Equipment and method for synchronous timer modulation with power source modulation in band expansion timer system |
| 02/23/2005 | CN1190895C 放大器 Amplifiers |
| 02/23/2005 | CN1190716C Current mirror circuit, integrated circuit and device for reproducing optical recording carrier |
| 02/22/2005 | US6859643 Power amplifier sharing in a wireless communication system with amplifier pre-distortion |
| 02/22/2005 | US6859104 Tunable power amplifier matching circuit |
| 02/22/2005 | US6859103 Bias circuit for improving linearity of a radio frequency power amplifier |
| 02/22/2005 | US6859100 Class-A amplifier circuit having output voltage varied according to input voltage |
| 02/22/2005 | US6859099 Nonlinear distortion compensation power amplifier |
| 02/22/2005 | US6859096 Class D amplifier |
| 02/22/2005 | US6859095 Non-switched capacitor offset voltage compensation in operational amplifiers |
| 02/22/2005 | US6859085 Mixer circuit and differential amplifier circuit |
| 02/17/2005 | WO2005015757A1 Transmission device, transmission power control method, and radio communication device |
| 02/17/2005 | WO2005015756A1 Transmitter apparatus |
| 02/17/2005 | WO2005015753A2 Improved radio frequency digital-to-analog converter |
| 02/17/2005 | WO2005015740A1 Differential circuits |
| 02/17/2005 | WO2005015734A2 Variable gain amplifier system |
| 02/17/2005 | WO2005015733A1 Self-biased darlington amplifier |
| 02/17/2005 | WO2005015636A1 Semiconductor device |
| 02/17/2005 | WO2005002042A3 Integrated power amplifier circuit |
| 02/17/2005 | WO2004017512A9 High power doherty amplifier |
| 02/17/2005 | WO2003012982A9 Tuned damping circuit for power amplifier output |
| 02/17/2005 | US20050036635 Audio signal output device |
| 02/17/2005 | US20050036454 Transmission apparatus |
| 02/17/2005 | US20050035822 CMOS Class AB operational amplifier |
| 02/17/2005 | US20050035821 High speed, high resolution amplifier topology |
| 02/17/2005 | US20050035820 Switchable operational amplifier circuit |
| 02/17/2005 | US20050035819 CMOS differential buffer circuit |
| 02/17/2005 | US20050035817 Method and corresponding circuit structure to correlate the transconductance of transistors of different types |
| 02/17/2005 | US20050035789 Output circuit device for clock signal distribution in high-speed signal transmission |
| 02/16/2005 | EP1506615A1 Method and apparatus for error compensation in a hybrid matrix amplification system |
| 02/16/2005 | EP1506614A1 Power amplifier end stage |
| 02/16/2005 | CN1582529A Active radio frequency cavity amplifier |
| 02/16/2005 | CN1582528A Ping-pong amplifier with auto-zeroing and chopping |
| 02/16/2005 | CN1582527A Power amplifier module with distortion compensation |
| 02/16/2005 | CN1581697A 传输装置 Transmission device |
| 02/16/2005 | CN1581682A 功率放大器 PA |
| 02/16/2005 | CN1581681A Source follower with amplitude-to-amplitude voltage maximum amplitude deflection |
| 02/16/2005 | CN1581680A Preamplifier gain switching circuit and method |
| 02/16/2005 | CN1581679A Audio-frequency signal output apparatus |
| 02/16/2005 | CN1581659A Power converter circuit and power convertion method |
| 02/16/2005 | CN1190005C Circuit reducing disortion and noise of square-wave pulses, and use of method and circuit |
| 02/16/2005 | CN1189871C Appts. and method for detecting light beam power in optical disc driver |
| 02/15/2005 | US6856796 High linearity circuits and methods regarding same |
| 02/15/2005 | US6856771 Optical receiving apparatus and method |
| 02/15/2005 | US6856201 Method to reduce unwanted oscillations in high speed, high gain or transimpedance amplifiers |
| 02/15/2005 | US6856200 Protection circuit and method for RF power amplifiers in WLAN tranceivers |
| 02/15/2005 | US6856199 Reconfigurable distributed active transformers |
| 02/15/2005 | US6856198 Amplifier and method for voltage-to-current conversion |
| 02/15/2005 | US6856197 Symmetrical current amplifier |
| 02/15/2005 | US6856195 Preamplifier system with selectable input impedance |
| 02/15/2005 | US6856194 Center of gravity compensation of Class-D amplifier |
| 02/15/2005 | US6856193 Electronic circuit for converting a signal and amplifier incorporating same |
| 02/15/2005 | US6856192 Class-D amplifier of BTL output type using filter coil and low-pass filter |
| 02/15/2005 | US6856190 Leak current compensating device and leak current compensating method |
| 02/15/2005 | US6856030 Semiconductor latches and SRAM devices |
| 02/10/2005 | WO2005013480A1 Circuit for varying gain of preamplifier |
| 02/10/2005 | WO2005013479A1 Amplifier circuit |