| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 12/19/2002 | US20020190734 Signal conditioning circuit for resistive sensors |
| 12/18/2002 | EP1267492A1 Voltage comparing circuit |
| 12/18/2002 | EP1267487A1 High frequency amplifier |
| 12/18/2002 | EP1267483A2 Asymmetrically biased high linearity balanced amplifier |
| 12/18/2002 | EP1266453A1 High noise rejection voltage-controlled ring oscillator architecture |
| 12/18/2002 | EP0784885B1 Amplifier |
| 12/18/2002 | CN1385957A High-efficient E type power amplifier optimized design method |
| 12/18/2002 | CN1096742C 半导体器件 Semiconductor devices |
| 12/17/2002 | US6496175 Output circuit |
| 12/17/2002 | US6496074 Cascode bootstrapped analog power amplifier circuit |
| 12/17/2002 | US6496070 Buffer circuit comprising load, follower transistor and current source connected in series |
| 12/17/2002 | US6496069 Cascode circuit capable of contributing a comparatively low intermodulation distortion in the amplified signals |
| 12/17/2002 | US6496068 Multi-stage amplifier circuit |
| 12/17/2002 | US6496067 Class AB voltage current convertor having multiple transconductance stages and its application to power amplifiers |
| 12/17/2002 | US6496066 Fully differential operational amplifier of the folded cascode type |
| 12/17/2002 | US6496065 Linear amplifier using frequency 2nd order intermodulation feed-forwarding method |
| 12/17/2002 | US6496061 High efficiency multiple power level amplifier |
| 12/17/2002 | US6496060 Hybridized, high performance PWM amplifier |
| 12/17/2002 | US6496059 Clas-N amplifer |
| 12/17/2002 | CA2322634C Multi-gb/s data pulse receiver |
| 12/15/2002 | CA2382192A1 High frequency amplifier for amplifying high frequency signals |
| 12/12/2002 | WO2002099966A1 Switching amplifier having digital correction and method therefor |
| 12/12/2002 | WO2002099965A1 Mmic driver amplifier having zig-zag rf signal flow |
| 12/12/2002 | WO2002075922A3 Circuit and method for input side impedance matching of a power amplifier in an electronic device |
| 12/12/2002 | US20020187764 Amplification circuit with improved linearity |
| 12/12/2002 | US20020186853 Differential audio amplification system |
| 12/12/2002 | US20020186573 Alternating current soft start circuit |
| 12/12/2002 | US20020186440 Transmitting circuit apparatus and method |
| 12/12/2002 | US20020186231 Display apparatus and driving device for displaying |
| 12/12/2002 | US20020186155 Method and apparatus for efficient mixed signal processing in a digital amplifier |
| 12/12/2002 | US20020186091 High-frequency semiconductor device |
| 12/12/2002 | US20020186088 High-frequency amplifier and radio transmission device with circuit scale and current consumption reduced to achieve high efficiency |
| 12/12/2002 | US20020186084 Bias circuit for use with low-voltage power supply |
| 12/12/2002 | US20020186080 Totem pole rf amplifiers with phase and amplitude correction |
| 12/12/2002 | US20020186079 Asymmetrically biased high linearity balanced amplifier |
| 12/12/2002 | US20020186078 Application of the doherty amplifier as a predistortion circuit for linearizing microwave amplifiers |
| 12/12/2002 | US20020186076 High frequency power amplifier |
| 12/12/2002 | US20020186075 DC offset self-calibration system for a digital switching amplifier |
| 12/12/2002 | US20020186047 Internally and externally biased dual mode 1394 compliant driver |
| 12/12/2002 | DE10132803A1 Interface circuit for frequency converter output has current path coupling signal input to signal output with cascode stage, second path with parallel cascode stage, common mode port |
| 12/12/2002 | DE10127786A1 Bipolar DC coupled high voltage precision amplifier with constant current output |
| 12/12/2002 | DE10126379A1 Circuit arrangement for digitizing an information signal has amplifier circuit containing non-linear feedback amplifier and digitizing circuit in form of comparator |
| 12/11/2002 | EP1265356A1 Amplifier with low input impedance |
| 12/11/2002 | EP1265354A1 Amplifier circuit |
| 12/11/2002 | EP1265353A2 HEMT-HBT Doherty microwave amplifier |
| 12/11/2002 | EP1265217A2 Operational amplifier circuit, driving circuit and driving method |
| 12/11/2002 | EP1265216A2 Operational amplifier circuit, driving circuit and driving method |
| 12/11/2002 | EP1265149A2 Internally and externally biased dual mode 1394 compliant driver |
| 12/11/2002 | EP1264454A1 Variable gain line driver depending on frequency |
| 12/11/2002 | EP1264396A1 Circuit arrangement for adjusting the operating point of a high-frequency transistor and an amplifier circuit |
| 12/11/2002 | EP1264395A2 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio |
| 12/11/2002 | EP1264394A2 Digital-to-analog interface circuit having adjustable time response |
| 12/11/2002 | EP0956663B1 Ratiometric compensated optical isolation coupler |
| 12/11/2002 | EP0908004B1 Device and method for compensating phase distortion |
| 12/11/2002 | CN2525734Y Six channel power amplifying card |
| 12/11/2002 | CN2525733Y Eight channel power amplifying card |
| 12/11/2002 | CN1384998A Transconductor with controllable transconductance for low supply voltages |
| 12/11/2002 | CN1384995A Multistage amplifier |
| 12/11/2002 | CN1384603A Switchable voltage follower and bridge driving circuit unit with the follower |
| 12/11/2002 | CN1096177C Receiver for audio frequency/video frequency interlinked difference main line |
| 12/11/2002 | CN1096150C Transmitter power varying device having bypass line for power amplifier |
| 12/10/2002 | US6493030 Low-noise active pixel sensor for imaging arrays with global reset |
| 12/10/2002 | US6492930 Reduced propagation delay current mode cascaded analog-to-digital converter and threshold bit cell therefor |
| 12/10/2002 | US6492875 Self-boosting circuit for a power amplifier |
| 12/10/2002 | US6492873 Method of distributed amplifier design utilizing filter synthesis techniques |
| 12/10/2002 | US6492871 Current feedback operational amplifier |
| 12/10/2002 | US6492870 Class AB, high speed, input stage with base current compensation for fast settling time |
| 12/10/2002 | US6492869 Linear amplifier and radio communication apparatus using the same |
| 12/10/2002 | US6492868 Dynamic range enhancement technique |
| 12/10/2002 | US6492842 Logic circuit |
| 12/10/2002 | US6492687 Merged semiconductor device and method |
| 12/08/2002 | CA2389489A1 Application of the doherty amplifier as a predistortion circuit for linearizing microwave amplifiers |
| 12/08/2002 | CA2389477A1 Hemt-hbt doherty microwave amplifier |
| 12/08/2002 | CA2389456A1 Asymmetrically biased high linearity balanced amplifier |
| 12/05/2002 | WO2002098008A2 Non-linear transistor circuits with thermal stability |
| 12/05/2002 | WO2002097982A1 Apparatus for amplifying a telecommunication signal |
| 12/05/2002 | WO2002097981A1 Method and apparatus for an efficient low voltage switchable gm cell |
| 12/05/2002 | WO2002097976A1 Ultra high speed clocked limiting preamplifier |
| 12/05/2002 | WO2002097975A2 High-bandwidth low-voltage gain cell and voltage follower having an enhanced transconductance |
| 12/05/2002 | WO2002097974A2 Active auto zero circuit for time continuous open loop amplifiers |
| 12/05/2002 | WO2002097973A2 Duty cycle integrator with tracking common mode feedback control |
| 12/05/2002 | WO2002097972A2 Power amplifier control |
| 12/05/2002 | WO2002097970A1 A transmitter with a sliding compression point |
| 12/05/2002 | WO2002097968A2 Method and apparatus for compensation of second order distortion |
| 12/05/2002 | WO2002073795A3 High efficciency switching amplifiers |
| 12/05/2002 | WO2002061519A3 Bias circuit for maintaining a constant value of transconductance divided by load capacitance |
| 12/05/2002 | WO2002031972A3 Amplification circuit with improved linearity |
| 12/05/2002 | US20020183635 Voltage sensing system with input impedance balancing for electrocardiogram (ECG) sensing applications |
| 12/05/2002 | US20020183035 Non-linear transistor circuits with thermal stability |
| 12/05/2002 | US20020183024 Radio frequency circuit and communication system |
| 12/05/2002 | US20020183019 High-level modulation method and apparatus |
| 12/05/2002 | US20020182758 Circuit for compensation against back-gating |
| 12/05/2002 | US20020181604 Layered modulation for digital signals |
| 12/05/2002 | US20020180720 Operational amplifier circuit, driving circuit and driving method |
| 12/05/2002 | US20020180717 Operational amplifier circuit, driving circuit, and driving method |
| 12/05/2002 | US20020180685 Amplifier circuit and liquid-crystal display unit using the same |
| 12/05/2002 | US20020180547 Efficient pulse amplitude modulation transmit modulation |
| 12/05/2002 | US20020180534 Switchless multi-resonant, multi-band power amplifier |
| 12/05/2002 | US20020180532 Power-shifting rf amplifiers |
| 12/05/2002 | US20020180531 Low quiescent power class AB current mirror circuit |