| 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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| 10/30/2002 | CN2519532Y Digital audio frequency power amplifier output overcurrent protective circuit |
| 10/30/2002 | CN1377131A Low-distortion digital power amplifying method and its system |
| 10/30/2002 | CN1377029A Monoterminal feeding preamplifier with high power inhibition ratio |
| 10/29/2002 | US6473663 Noise elimination in a USB codec |
| 10/29/2002 | US6473595 RF active balun circuit for improving small-signal linearity |
| 10/29/2002 | US6473133 Broadcast transmission system with correction for distortion caused by amplifying and signal conditioning components at a different rate |
| 10/29/2002 | US6472949 Signal attenuators |
| 10/29/2002 | US6472941 Distributed amplifier with terminating circuit capable of improving gain flatness at low frequencies |
| 10/29/2002 | US6472937 Bias enhancement circuit for linear amplifiers |
| 10/29/2002 | US6472936 Low-noise gain switching circuit using tapped inductor |
| 10/29/2002 | US6472934 Triple class E Doherty amplifier topology for high efficiency signal transmitters |
| 10/29/2002 | US6472923 Semiconductor device |
| 10/29/2002 | CA2289345C Inverted super regenerative receiver |
| 10/24/2002 | WO2002084860A1 Stage of a power generator of high frequency current |
| 10/24/2002 | WO2002084858A1 Tunable voltage-controlled temperature-compensated crystal oscillator |
| 10/24/2002 | WO2002084857A1 Tunable voltage controlled oscillator |
| 10/24/2002 | WO2002084798A1 Inverted-f ferroelectric antenna |
| 10/24/2002 | WO2002084781A1 Tunable multiplexer |
| 10/24/2002 | WO2002084778A2 Tunable phase shifter and applications for same |
| 10/24/2002 | WO2002084686A1 Band switchable filter |
| 10/24/2002 | WO2002084685A1 Tunable ferro-electric filter |
| 10/24/2002 | WO2002084684A2 Tunable planar capacitor |
| 10/24/2002 | WO2002084310A1 Low-loss tunable ferro-electric device and method of characterization |
| 10/24/2002 | WO2001063745A3 Modulator of phase and amplitude |
| 10/24/2002 | US20020155821 Method and apparatus for reduction of distortion in a transmitter |
| 10/24/2002 | US20020153972 Electronic variable delay line filters using two in-line varactor-controlled four-input couplers allowing variable delay |
| 10/24/2002 | US20020153971 Delay line filters using multiple in-line four-input couplers |
| 10/24/2002 | US20020153955 Fast-setting, low power, jammer insensitive, biasing apparatus and method for single-ended circuits |
| 10/24/2002 | US20020153953 Operational amplifier including a right-half plane zero reduction circuit and related method |
| 10/24/2002 | US20020153952 Method and apparatus for reduction of distortion in a transmitter |
| 10/24/2002 | US20020153951 Adaptive linearizer for RF power amplifiers |
| 10/24/2002 | US20020153950 Distortion compensating apparatus |
| 10/24/2002 | US20020153948 Linear amplifier |
| 10/24/2002 | US20020153946 Dynamic frequency compensated operation amplifier |
| 10/24/2002 | US20020153944 Semiconductor integrated circuit |
| 10/24/2002 | US20020153940 Amplifier system with on-demand power supply boost |
| 10/24/2002 | US20020153926 Inverter circuit |
| 10/24/2002 | US20020153534 Semiconductor device and power amplifier using the same |
| 10/24/2002 | DE10115099A1 Verfahren zur Amplitudenbegrenzung A method for amplitude limiting |
| 10/24/2002 | DE10114935A1 Monolithically integrated high-voltage amplifier for capacitive actuators, has CMOS input amplifier, and layer for dielectrically insulating DMOS transistors in output stage from each other |
| 10/23/2002 | EP1251667A2 Predistortion for use with amplifiers which have hyperbolic tangent distortion |
| 10/23/2002 | EP1251634A1 Transconductance stage and RF communications device including such a stage |
| 10/23/2002 | EP1250753A1 Low-noise amplifier circuit and a method for amplifying low-power signals in a low-noise manner |
| 10/23/2002 | EP1110306B1 Methods for adjusting audio signals responsive to changes in a power supply level and related communications devices |
| 10/23/2002 | CN1376335A Method and apparatus for wireless phone transmit power amplification with reduced power consumption |
| 10/23/2002 | CN1376331A Break-before-make distortion compensation for a digital amplifier |
| 10/23/2002 | CN1376330A Dynamic switching frequency control for a digital switching amplifier |
| 10/23/2002 | CN1376329A DC offset calibration for a digital switching amplifier |
| 10/23/2002 | CN1376310A Improved heat dissipation in an amplifier circuit by interleaved configuration of two power transistors |
| 10/23/2002 | CN1375928A Buffering amplifier capable of miniaturizing and electronic circuit assembly using same |
| 10/23/2002 | CN1375927A Self-oscillation powre amplifier |
| 10/23/2002 | CN1375926A Audio-frequency power amplifier apparatus and method thereof |
| 10/23/2002 | CN1093335C Semiconductor circuit for compensating distortion caused by change of environmental temperature |
| 10/22/2002 | US6470084 Current amplifier, particularly for a telephone line |
| 10/22/2002 | US6469581 HEMT-HBT doherty microwave amplifier |
| 10/22/2002 | US6469580 Fully differential, variable-gain amplifier and a multidimensional amplifier arrangement |
| 10/22/2002 | US6469575 Circuit for amplifying and outputting audio signals |
| 10/22/2002 | US6469562 Source follower with Vgs compensation |
| 10/22/2002 | US6469548 Output buffer crossing point compensation |
| 10/22/2002 | US6469543 High speed output buffers using voltage followers |
| 10/22/2002 | US6469489 Adaptive array sensor and electrical circuit therefore |
| 10/22/2002 | CA2374318C Device and method for predistorting a transmission signal to be transmitted via a nonlinear transmission path |
| 10/22/2002 | CA2310344C Integrated on-board automated alignment for low distortion amplifier |
| 10/17/2002 | WO2002082756A2 Amplitude and/or phase-modulator according to the principle of envelope elimination and restoration |
| 10/17/2002 | WO2002082640A1 Reflection loss suppression circuit |
| 10/17/2002 | WO2002082638A1 Bias adjustment for power amplifier |
| 10/17/2002 | WO2002082637A1 Method and apparatus for increasing the efficiency of a transmitter |
| 10/17/2002 | WO2002023718A3 Self-tuned millimeter wave rf transceiver module |
| 10/17/2002 | US20020151291 Antenna interface unit |
| 10/17/2002 | US20020151279 Tunable low noise amplifier |
| 10/17/2002 | US20020150146 Frequency hop pilot technique for a control system that reduces distortion produced by electrical circuits |
| 10/17/2002 | US20020149535 Tunable antenna matching circuit |
| 10/17/2002 | US20020149533 Tunable horn antenna |
| 10/17/2002 | US20020149526 Inverted-F ferroelectric antenna |
| 10/17/2002 | US20020149448 Low-loss tunable ferro-electric device and method of characterization |
| 10/17/2002 | US20020149444 Tunable planar capacitor |
| 10/17/2002 | US20020149443 Tunable voltage controlled oscillator |
| 10/17/2002 | US20020149439 Tunable isolator |
| 10/17/2002 | US20020149434 Tunable voltage-controlled temperature-compensated crystal oscillator |
| 10/17/2002 | US20020149428 Tunable power amplifier matching circuit |
| 10/17/2002 | US20020149424 Power amplifying device |
| 10/17/2002 | US20020149423 Automatic gain control circuit with high linearity and monotonically correlated offset voltage |
| 10/17/2002 | US20020149422 Balanced transformer-less amplifier and an offset detection and correction system therefore |
| 10/17/2002 | US20020149419 Low power large signal RF tuned buffer amplifier |
| 10/17/2002 | US20020149036 Semiconductor integrated circuit |
| 10/16/2002 | EP1249931A2 Auto-adaptive pre-distortion scheme employing parametric modelling |
| 10/16/2002 | EP1249930A2 Predistortion linearizer and predistortion compensation method and program |
| 10/16/2002 | EP1183776B1 Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform |
| 10/16/2002 | EP0932933A4 Multi-stage high efficiency linear power amplifier |
| 10/16/2002 | CN2517176Y Load testing protection device for audio-frequency video-frequency amplifier |
| 10/16/2002 | CN2517175Y Voltage testing protection device for audio-frequency vedio-frequency amplifier |
| 10/16/2002 | CN2517174Y Automatic energy-saving device for audio-frequency video-frequency amplifier |
| 10/16/2002 | CN1374812A Method and apparatus for transmitting signal digital predistortion, frequency characteristic compensation and feed forward linearization |
| 10/15/2002 | US6466772 Apparatus and method for improving power control loop linearity |
| 10/15/2002 | US6466628 Technique for effectively rendering power amplification and control in wireless communications |
| 10/15/2002 | US6466095 Power amplifier |
| 10/15/2002 | US6466094 Gain and bandwidth enhancement for RF power amplifier package |
| 10/15/2002 | US6466092 Distortion compensation method and apparatus |
| 10/15/2002 | US6466091 High order multi-path operational amplifier with reduced input referred offset |
| 10/15/2002 | US6466089 Control circuit for increasing the output inpedance of a transconductor |