| 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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| 10/25/2001 | US20010034217 System and method for selectively interconnecting amplifiers in a communications device |
| 10/25/2001 | US20010033241 Current-to-voltage converter with controllable gain, and signal processing circuit comprising such a converter |
| 10/25/2001 | US20010033198 Electronic devices comprising an audio amplifier and methods for controlling such electronic devices |
| 10/24/2001 | EP1148639A1 Electronic devices comprising an audio amplifier and methods for controlling such electronic devices |
| 10/24/2001 | EP1148636A2 RF power amplifier system having distributed modulation encoding |
| 10/24/2001 | EP1148635A2 Apparatus and method for use in disconnecting and/or replacing one of a plurality of power amplifiers in a transmitter while the transmitter is operating |
| 10/24/2001 | EP1148634A2 Amplifier circuit |
| 10/24/2001 | EP1148633A1 High frequency circuit using high output amplifier cell block and low output amplifier cell block |
| 10/24/2001 | EP1148550A1 Radio frequency amplifier with small distortion and superior isolation |
| 10/24/2001 | EP1147604A1 Impedance matching networks for non-linear circuits |
| 10/24/2001 | EP1147601A1 Level shift circuit |
| 10/24/2001 | EP1147600A1 Noise reduction scheme for operational amplifiers |
| 10/24/2001 | EP1147599A1 Constant gain, constant phase rf power amplifier block |
| 10/24/2001 | EP0812491B1 Out-of-band compensation for non-linear device |
| 10/24/2001 | CN1319277A Isolator with built-in power amplifier |
| 10/24/2001 | CN1318899A Phase inversino protection of operational amplifier |
| 10/24/2001 | CN1318898A High-frequency power amplifier with bipolar transistor |
| 10/24/2001 | CN1073761C AGC voltage correction circuit |
| 10/24/2001 | CN1073760C Offset-compensated linear RF detector |
| 10/24/2001 | CN1073759C Non-linear compensation circuit |
| 10/23/2001 | US6307438 Multistage operational amplifier with stability control |
| 10/23/2001 | US6307437 MOS load, pole compensation |
| 10/23/2001 | US6307436 Predistortion type linearizer with a resonant circuit and common gate FET |
| 10/23/2001 | US6307435 High power amplifier linearization method using modified linear-log model predistortion |
| 10/23/2001 | US6307433 Preamplifier for high speed optical fiber communication system |
| 10/23/2001 | US6307432 Non-inverting feedback amplifier with high disabled impedance |
| 10/23/2001 | US6307426 Low voltage, band gap reference |
| 10/23/2001 | CA2288460C Distortion compensation circuit |
| 10/18/2001 | US20010030581 Bidirectional direct current power conversion circuits and methods |
| 10/18/2001 | US20010030580 Power amplifier with provisions for varying operating voltage based upon power amplifier output power |
| 10/18/2001 | US20010030579 Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuit |
| 10/17/2001 | EP1146639A2 A circuit structure of the feedforward type with programmable zeroes, particularly for synthesizing time-continual filters |
| 10/17/2001 | EP1146636A1 Radio transmitter with reduced power consumption |
| 10/17/2001 | EP1146635A1 Power amplifier |
| 10/17/2001 | EP1145447A2 Radio devices including power amplifier control circuits with hardware lockouts |
| 10/17/2001 | EP1145425A1 Amplifier |
| 10/17/2001 | EP1145424A1 Hybrid power mosfet for high current carrying capacity |
| 10/17/2001 | EP1110319A4 Dc output level compensation circuit |
| 10/17/2001 | CN1318226A Two-port with frequency-dependent network |
| 10/16/2001 | USRE37407 Polar envelope correction mechanism for enhancing linearity of RF/microwave power amplifier |
| 10/16/2001 | US6304145 Large signal amplifier gain compensation circuit |
| 10/16/2001 | US6304144 Differential amplification circuit |
| 10/16/2001 | US6304143 Amplifier slew rate boosting scheme |
| 10/16/2001 | US6304140 Digital predistortion for amplifiers |
| 10/16/2001 | US6304138 Audio-frequency power amplifier that utilizes a bridged amplified configuration |
| 10/16/2001 | US6304130 Bias circuit for depletion mode field-effect transistors |
| 10/16/2001 | US6304129 Compensation circuit and method for a power transistor |
| 10/16/2001 | US6304070 Voltage/current converter circuit and high-gain amplifying circuit |
| 10/11/2001 | WO2001076169A1 Device for producing a phase and amplitude modulated radio frequency signal |
| 10/11/2001 | WO2001076062A1 Electronic circuit for providing a desired common mode voltage to a differential output of an amplifier stage |
| 10/11/2001 | WO2001076060A1 Power amplifier module |
| 10/11/2001 | WO2001075973A2 Combined transistor-capacitor structure in deep sub-micron cmos for power amplifiers |
| 10/11/2001 | US20010029172 Low-noise amplifier for a mobile communication terminal |
| 10/11/2001 | US20010029168 High frequency circuit using high output amplifier cell block and low output amplifier cell block |
| 10/11/2001 | DE10017601A1 Switching arrangement to protect the output of an electrical amplifier uses comparator stage |
| 10/10/2001 | EP1143610A2 Operational amplifier phase reversal protection |
| 10/10/2001 | EP1143609A2 High frequency power amplifier having a bipolar transistor |
| 10/10/2001 | EP1142250A2 Power i-q modulation systems and methods using predistortion circuit |
| 10/10/2001 | EP1142137A1 P |
| 10/10/2001 | EP1142136A1 Control of gain and power consumption in a power amplifier |
| 10/10/2001 | EP1142106A1 Amplifier circuit |
| 10/10/2001 | EP1142105A1 Linearized amplifier core |
| 10/10/2001 | EP1142104A1 Multi-frequency transmitter using predistortion and a method of transmitting |
| 10/10/2001 | EP1142103A1 Circuits for preventing unwanted output transients in amplifiers during power-up |
| 10/10/2001 | CN1316843A Radio transmitter installation with low-power consumption |
| 10/09/2001 | US6301467 Bias voltage controlled parallel active components |
| 10/09/2001 | US6300837 Dynamic bias boosting circuit for a power amplifier |
| 10/09/2001 | US6300835 Power amplifier core |
| 10/09/2001 | US6300828 Switchless high efficiency amplifier |
| 10/09/2001 | US6300827 Method and apparatus for cascaded ground return amplifier |
| 10/09/2001 | US6300826 Apparatus and method for efficiently amplifying wideband envelope signals |
| 10/09/2001 | US6300825 PWM amplifier with feedback loop integrator |
| 10/09/2001 | US6300824 Analog offset cancellation method and circuit and amplifier using such circuit |
| 10/09/2001 | US6300811 Differential amplifier |
| 10/09/2001 | CA2211231C Distortion compensation control for a power amplifier |
| 10/07/2001 | CA2343079A1 Rf power amplifier system having distributed modulation encoding |
| 10/07/2001 | CA2342417A1 Adaptive compensation for carrier signal phase |
| 10/04/2001 | WO2001074000A1 Low-power cdma receiver |
| 10/04/2001 | WO2001073975A1 Dynamic bias for rf power amplifiers |
| 10/04/2001 | WO2001073946A1 Antenna amplifier |
| 10/04/2001 | WO2001073942A2 Concurrent multi-band low noise amplifier architecture |
| 10/04/2001 | WO2001073941A2 Dynamic bias boosting circuit for a power amplifier |
| 10/04/2001 | WO2000048310A9 Amplifier having redundancies |
| 10/04/2001 | US20010027059 Electronic Device |
| 10/04/2001 | US20010026600 Radio transmitter with reduced power consumption |
| 10/04/2001 | US20010026564 Signal treating circuit with a class A/B output stage connectable to a source of multiple supply voltages |
| 10/04/2001 | US20010026469 Integrated memory having memory cells with magnetoresistive storage effect |
| 10/04/2001 | US20010026292 Driving device and driving method for ink jet printing head |
| 10/04/2001 | US20010026193 Amplifier phase reversal suppression |
| 10/04/2001 | US20010026192 Differential amplifier and filter circuit using the same |
| 10/04/2001 | US20010026190 Circuit configuration for controlling nonlinear paths |
| 10/04/2001 | EP1139586A2 Ultra-linear laser drive circuit |
| 10/04/2001 | EP1138115A1 Amplitude modulation to phase modulation cancellation method in an rf amplifier |
| 10/04/2001 | EP0840951B1 Amplifier with active-bootstrapped gain-enhancement technique |
| 10/04/2001 | EP0564490B1 Improved switching amplifier |
| 10/04/2001 | DE10109417A1 Aktive Vorspannschaltung mit Wilson- und Widlar-Konfigurationen Active bias circuit with Wilson and Widlar configurations |
| 10/04/2001 | DE10015315A1 Antennenverstärker Antenna amplifier |
| 10/03/2001 | CN1316134A Method and apparatus for power amplification |
| 10/03/2001 | CN1316130A Muting circuit having controllable impedance means for soft muting |
| 10/03/2001 | CN1315781A Amplifier for audio/video device |