| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/03/2002 | WO2002001709A2 High-frequency amplifier circuit with negative impedance cancellation |
| 01/03/2002 | WO2002001708A2 Digital trimming of op amp offset voltage and quiescent current using non-volatile memory |
| 01/03/2002 | WO2001067593A3 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio |
| 01/03/2002 | US20020002038 Mobile communications device power amplifier module and mobile communications device terminal and mobile communications device base station |
| 01/03/2002 | US20020001342 Carrousel handshake |
| 01/03/2002 | US20020000883 Apparatus for and method of controlling amplifier output offset using body biasing in mos transistors |
| 01/03/2002 | US20020000878 Level shifter |
| 01/03/2002 | US20020000877 PWM limiter |
| 01/02/2002 | EP1168898A2 Mobile communications device power amplifier module, mobile communications device terminal equipment and mobile communications device base station |
| 01/02/2002 | EP1168640A2 Architecture for multi-carrier receiver |
| 01/02/2002 | EP1168625A2 Logic circuit |
| 01/02/2002 | EP1168604A1 Multistage amplifier |
| 01/02/2002 | EP1168603A1 Switched-capacitor, fully-differential operational amplifier with high switching frequency |
| 01/02/2002 | EP1168602A1 Completely differential operational amplifier of the folded cascode type |
| 01/02/2002 | EP1168599A2 High dynamic range low noise amplifier |
| 01/02/2002 | EP1166473A1 Predistortion arrangement using mixers in nonlinear electro-optical applications |
| 01/02/2002 | EP1166438A1 Class d digital amplifier |
| 01/02/2002 | CN1329778A Transmission final stage for mobile telephone |
| 01/02/2002 | CN1329773A Amplitude modulation o phase modulation cancellation method in an RF amplifier |
| 01/02/2002 | CN1329772A Constant gain, constant phase radio-frequency power assembly |
| 01/02/2002 | CN1329454A Power amplifying circuit for communication device |
| 01/02/2002 | CN1329452A Power amplifier adopting feedback capacitance to compensate and improve linearity |
| 01/02/2002 | CN1077354C 放大器 Amplifier |
| 01/01/2002 | US6335661 Balanced input for temperature sensor |
| 01/01/2002 | US6335657 MOSFET amplifier circuit |
| 01/01/2002 | CA2242724C Adaptive bandwidth stabilization for an integrated circuit amplifier |
| 12/27/2001 | WO2001099275A1 Signal modulation |
| 12/27/2001 | WO2001099274A2 Audio amplifier power and temperature controller having network detecting and associated methods |
| 12/27/2001 | WO2001099273A1 Dual bridge amplifier |
| 12/27/2001 | WO2001099272A1 Base bias circuit, and power amplifier using the base bias circuit |
| 12/27/2001 | WO2001056149A3 Low distortion driving amplifier for integrated filters |
| 12/27/2001 | WO2001047103A3 Electronic circuit |
| 12/27/2001 | US20010054934 Active bias network circuit for radio frequency amplifier |
| 12/27/2001 | US20010054933 High frequency amplifier bias circuit, high frequency power amplifier, and communication device |
| 12/27/2001 | US20010054932 Amplifier apparatus |
| 12/25/2001 | US6333804 Optical module for receiving optical signal from optical fiber |
| 12/25/2001 | US6333677 Linear power amplifier bias circuit |
| 12/25/2001 | US6333673 Electronic circuit |
| 12/20/2001 | WO2001097479A1 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals |
| 12/20/2001 | WO2001097384A2 Real time correction of a digital pwm amplifier |
| 12/20/2001 | WO2001097374A1 Amplifier circuit |
| 12/20/2001 | WO2001097373A2 Multiple output current mirror with improved accuracy |
| 12/20/2001 | WO2001097328A1 Techniques for enhancing gain in a quasi-optic grid array |
| 12/20/2001 | WO2001097322A1 Mode translating waveguide adapter for a quasi-optic grid array |
| 12/20/2001 | WO2001097259A2 Method for controlling bias in an active grid array |
| 12/20/2001 | US20010053676 Power amplification circuit for communication device |
| 12/20/2001 | US20010052821 Semiconductor circuit with a stabilized gain slope |
| 12/20/2001 | US20010052820 High frequency power amplifier having a bipolar transistor |
| 12/20/2001 | US20010052819 Buffer circuit comprising load, follower transistor and current source connected in series |
| 12/20/2001 | US20010052818 Operational amplifier circuit |
| 12/20/2001 | US20010052816 Power amplifier having predistortion linearizer |
| 12/20/2001 | US20010052815 Noise reduction scheme for operational amplifiers |
| 12/20/2001 | US20010052814 Hybridized, high performance PWM amplifier |
| 12/20/2001 | US20010052807 Differential phase-locked-loop circuit |
| 12/20/2001 | US20010052802 Matched current differential amplifier |
| 12/19/2001 | EP1164693A2 Amplifier apparatus |
| 12/19/2001 | EP1163741A1 Multiplexed power amplifiers for satellite communication system |
| 12/19/2001 | CN1327638A Transceiver operation in radio system |
| 12/19/2001 | CN1327626A Optical integrated device |
| 12/19/2001 | CN1327348A Cell powered mobile phone with, radio frequency power amplifier for radio communication system |
| 12/19/2001 | CN1327238A Equipmental readant method of resistance cross point storage unit array |
| 12/19/2001 | CN1076546C 低压差分放大器 Low Voltage Differential Amplifier |
| 12/19/2001 | CN1076538C Opposed current powr converter |
| 12/18/2001 | US6331921 Magneto-resistive head read amplifier |
| 12/18/2001 | US6331846 Differential amplifier, operational amplifier employing the same, and liquid crystal driving circuit incorporating the operational amplifier |
| 12/18/2001 | US6331804 Amplifier and radio communication apparatus using the same |
| 12/18/2001 | US6331803 Constant bandwidth, variable gain amplifier, and method |
| 12/18/2001 | US6331801 RF amplifier system having an improved power supply |
| 12/18/2001 | US6331799 Bias circuit for control input of power transistor |
| 12/18/2001 | US6331785 Polling to determine optimal impedance |
| 12/18/2001 | CA2276311C Combined linear power amplifying device and method |
| 12/13/2001 | WO2001095485A2 Radio frequency device with fast charging of an input capacitance |
| 12/13/2001 | WO2001095484A1 Method and apparatus for switching stages of a multistage amplifier quickly between operational modes |
| 12/13/2001 | WO2001095483A1 Improvements in push-pull amplifiers |
| 12/13/2001 | WO2001095481A1 Multistage doherty amplifier |
| 12/13/2001 | WO2001095480A1 Composite amplifier |
| 12/13/2001 | WO2001074000A8 Low-power cdma receiver |
| 12/13/2001 | WO2001047109A3 Low voltage differential signal (lvds) input circuit |
| 12/13/2001 | US20010051513 Power amplification system with intelligent control of amplifier modules |
| 12/13/2001 | US20010050962 Transmitting circuit apparatus |
| 12/13/2001 | US20010050714 Circuit for processing charge detecting signal |
| 12/13/2001 | US20010050595 Single-ended push-pull amplifier circuit |
| 12/13/2001 | US20010050594 Negative feed-back amplifier and method for negative feed-back |
| 12/13/2001 | US20010050587 Radio frequency amplifier and tuner |
| 12/13/2001 | US20010050410 High sheet MOS resistor method and apparatus |
| 12/13/2001 | US20010050333 Differential photoelectric receiver circuit |
| 12/12/2001 | EP1162737A1 Semiconductor device and communication device |
| 12/12/2001 | EP1162736A2 Single-ended push-pull amplifier circuit |
| 12/12/2001 | EP1162735A2 Method and apparatus for producing an alternating voltage from an input data stream |
| 12/12/2001 | EP1162731A2 Microwave amplifying circuit, microwave amplifying device, and distortion compensation circuit |
| 12/12/2001 | EP1161794A1 Power supply compensation for noise shaped, digital amplifiers |
| 12/12/2001 | EP1161792A1 Linearized transconductance cell |
| 12/12/2001 | CN2465276Y Audio power amplifying card |
| 12/12/2001 | CN1326614A High efficiency switched gain power amplifier |
| 12/12/2001 | CN1326613A Multi-reference, high-accuracy switching amplifier |
| 12/12/2001 | CN1326612A Circuit and method for linearizing amplitude modulation in power amplifier |
| 12/12/2001 | CN1326611A In-line, unbalanced amplifier, pre-distortion circuit |
| 12/12/2001 | CN1076124C Power amplifier circuit |
| 12/11/2001 | US6330279 System and method of correcting gain and offset error in a signal amplifier for a position sensitive detector |
| 12/11/2001 | US6330165 Semiconductor device |