| 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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| 05/04/2004 | US6731175 High frequency amplifier |
| 05/04/2004 | US6731173 Doherty bias circuit to dynamically compensate for process and environmental variations |
| 05/04/2004 | US6731172 Doherty power amplifier with integrated quarter wave transformer/combiner circuit |
| 05/04/2004 | US6731171 Power amplifier module with stable idling current |
| 05/04/2004 | US6731168 Power amplifier linearizer that compensates for long-time-constant memory effects and method therefor |
| 05/04/2004 | US6731167 High frequency power amplifier module and wireless communication apparatus |
| 05/04/2004 | US6731165 Electronic amplifier |
| 05/04/2004 | US6731163 Miller de-compensation for differential input, differential output amplifier |
| 05/04/2004 | US6730945 Semiconductor device |
| 04/29/2004 | WO2004036775A1 Automatic-bias amplifier circuit |
| 04/29/2004 | WO2004036741A1 Frequency compensation of common-mode feedback loops for differential amplifiers |
| 04/29/2004 | WO2004036740A1 Method and system for linearizing an amplified signal |
| 04/29/2004 | WO2004036739A2 Continuous bias circuit and method for an amplifier |
| 04/29/2004 | WO2004036331A2 Low noise switching voltage regulator |
| 04/29/2004 | WO2004004114A3 System and method for protecting an audio amplifier output stage power transistor |
| 04/29/2004 | WO2003075452A3 Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity |
| 04/29/2004 | US20040083409 Fast closed-loop power control for non-constant envelope modulation |
| 04/29/2004 | US20040082354 System and method for boosting signals in a cellular phone base station |
| 04/29/2004 | US20040080372 High frequency amplifier |
| 04/29/2004 | US20040080371 Method of increasing output current capability of negative feedback amplifiers with output current limiting and freedom from thermal runaway |
| 04/29/2004 | US20040080364 High-efficiency modulating RF amplifier |
| 04/29/2004 | US20040080363 Semiconductor integrated circuit |
| 04/29/2004 | DE10296729T5 Signalverarbeitungsvorrichtung Signal processing apparatus |
| 04/28/2004 | EP1414161A1 Receiver |
| 04/28/2004 | EP1414148A1 Power amplifier for radio frequency transmission systems |
| 04/28/2004 | EP1413108A2 Method for avoiding interference radiation of am transmitters used in digital transmission |
| 04/28/2004 | EP1413054A1 Auxiliary circuitry for monolithic microwave integrated circuit |
| 04/28/2004 | EP1413053A2 Power amplifier system having frequency and amplifier failure compensation |
| 04/28/2004 | EP1413052A1 Intermodulation product cancellation circuit |
| 04/28/2004 | EP1413051A1 A transmitter with a sliding compression point |
| 04/28/2004 | EP1138115B1 Amplitude modulation to phase modulation cancellation method in an rf amplifier |
| 04/28/2004 | EP0799459B1 Electro-optical sensor |
| 04/28/2004 | CN1493112A Transmitting device |
| 04/28/2004 | CN1493106A Amplication systems and methods usnig fixed and modulated power supply voltages and buck-boost control |
| 04/28/2004 | CN1492578A Heat protective system of amplifier output stage |
| 04/27/2004 | US6727786 Band switchable filter |
| 04/27/2004 | US6727761 Resonant bypassed base ballast circuit |
| 04/27/2004 | US6727760 Output power control system |
| 04/27/2004 | US6727758 Fast cascaded class AB bipolar output stage |
| 04/27/2004 | US6727755 High speed linear variable gain amplifier architecture |
| 04/27/2004 | US6727753 Operational transconductance amplifier for an output buffer |
| 04/27/2004 | US6727751 Distortion compensation amplifier |
| 04/27/2004 | US6727750 Amplifier stablilization |
| 04/27/2004 | US6727747 Method for reusing resource for designing operational amplifier, layout generating apparatus, and layout generating program |
| 04/27/2004 | US6727746 Radio frequency amplifier and television tuner |
| 04/27/2004 | US6727745 Integrated circuit with current sense circuit and associated methods |
| 04/22/2004 | WO2004034667A2 Electromagnetic wave trasmitter systems, methods and articles of manufacture |
| 04/22/2004 | WO2004034582A1 Electronic circuit |
| 04/22/2004 | WO2004034577A1 Digital audio amplifier including phase lead-lag compensator for increasing self-oscillation frequency |
| 04/22/2004 | WO2004034575A1 Semiconductor device |
| 04/22/2004 | WO2004034574A1 Distortion compensation amplification apparatus, amplification system, and radio base station |
| 04/22/2004 | WO2004034573A1 Method for the adaptive pre-distortion of digital raw data values and device for carrying out said method |
| 04/22/2004 | WO2004034571A1 Apparatus, methods and articles of manufacture for electromagnetic processing |
| 04/22/2004 | WO2004034570A1 Envelope elimination and restoration amplifier and method thereof |
| 04/22/2004 | WO2004034569A2 Apparatus, methods and articles of manufacture for multiband signal processing |
| 04/22/2004 | WO2004034568A1 Power amplifier efficiency |
| 04/22/2004 | WO2004034567A2 Apparatus, methods and articles of manufacture for linear signal modification |
| 04/22/2004 | WO2004004307A3 Even order distortion elimination in push-pull or differential amplifiers and circuits |
| 04/22/2004 | WO2002039581A3 High speed output buffers using voltage followers |
| 04/22/2004 | US20040077324 Direct conversion of low power high linearity receiver |
| 04/22/2004 | US20040075504 Method and arrangement for detecting load mismatch, and a radio device utilizing the same |
| 04/22/2004 | US20040075502 Frequency compensation of common-mode feedback loops for differential amplifiers |
| 04/22/2004 | US20040075501 High frequency power amplification electric part and wireless communication system |
| 04/22/2004 | US20040075500 Buffer circuit and driver IC |
| 04/22/2004 | US20040075497 Feedforward amplifier, cummunication apparatus, feedforward amplifying method, program and medium |
| 04/22/2004 | US20040075495 Method and arrangement relating to electronic compensation |
| 04/22/2004 | US20040075494 Power amplification circuit and method for supplying power at a plurality of desired power output levels |
| 04/21/2004 | EP1411632A2 High frequency power amplifier and wireless communication system |
| 04/21/2004 | EP1410499A1 Improved linear power amplifier |
| 04/21/2004 | EP1410498A2 Power amplifier embedded cell bias detection, methods of detecting bias in power amplifiers and systems utilizing embedded cell bias detection |
| 04/21/2004 | EP1410497A2 Feed forward amplifier |
| 04/21/2004 | EP1191707B1 Power amplifier sharing in a wireless communication system with transmit diversity |
| 04/21/2004 | EP1118156B1 Amplifier apparatus with transient recovery aid |
| 04/21/2004 | CN1491052A Method for contracting and enlarging signal peak value power amplitude |
| 04/21/2004 | CN1146913C Integrated storage with storage unit with magnetic resistance storage effect |
| 04/20/2004 | WO2004036743A1 Means for limiting an output signal of an amplifier stage |
| 04/20/2004 | US6725030 CMOS radio frequency amplifier with inverter driver |
| 04/20/2004 | US6725021 Method for tuning an envelope tracking amplification system |
| 04/20/2004 | US6724831 Pre-distortion apparatus and method thereof |
| 04/20/2004 | US6724263 High-frequency power amplifier |
| 04/20/2004 | US6724259 Variable gain amplifier |
| 04/20/2004 | US6724253 Predistortion type linearizer controlled by two control voltages |
| 04/20/2004 | US6724251 Apparatus and method for employing gain dependent biasing to reduce offset and noise in a current conveyor type amplifier |
| 04/20/2004 | US6724248 DC offset self-calibration system for a digital switching amplifier |
| 04/20/2004 | US6724217 CMOS output amplifier independent of temperature, supply voltage and manufacturing quality of transistors |
| 04/20/2004 | CA2388512C Improved predistortion compensation for a power amplifier |
| 04/15/2004 | WO2004032490A1 Automatically setting an operative state of a wideband amplifier |
| 04/15/2004 | WO2004032345A1 Transmitting method and transmitter apparatus |
| 04/15/2004 | WO2004032319A1 Differential amplifier with temperature compensating function |
| 04/15/2004 | WO2004032318A1 Capacitor coupled dynamic bias boosting circuit for a power amplifier |
| 04/15/2004 | WO2004032317A1 Power amplifier and method for power amplification |
| 04/15/2004 | WO2004032188A2 Packaged rf power transistor having rf bypassing/output matching network |
| 04/15/2004 | WO2003073603A3 Current modulator with dynamic amplifier impedance compensation |
| 04/15/2004 | US20040072597 Power amplifier control |
| 04/15/2004 | US20040071225 Wireless communication apparatus |
| 04/15/2004 | US20040070832 Electro-optic gating arrangement with improved duty cycle |
| 04/15/2004 | US20040070456 Method of forming an audio amplifier voltage reference and structure therefor |
| 04/15/2004 | US20040070454 Continuous bias circuit and method for an amplifier |
| 04/15/2004 | US20040070452 Variable gain amplifier with adjustable gain slope |
| 04/15/2004 | US20040070450 Method and apparatus for compensation of cross modulation effects |