| 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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| 11/25/2004 | US20040232992 Bias current supply circuit and amplification circuit |
| 11/25/2004 | US20040232991 Temperature and process compensation of mosfet operating in sub-threshold mode |
| 11/25/2004 | US20040232989 Integratable, voltage-controlled RF power amplifier |
| 11/25/2004 | US20040232987 Amplifier with fixed input impedance operated in various gain modes |
| 11/25/2004 | US20040232986 Distortion compensation circuit, distortion compensation signal generating method, and power amplifier |
| 11/25/2004 | US20040232985 Hybrid distortion compensation method and hybrid distortion compensation device |
| 11/25/2004 | US20040232984 Signal correction techniques |
| 11/25/2004 | US20040232968 Dynamic method for limiting the reverse base-emitter voltage |
| 11/25/2004 | DE10317805A1 Electronic circuit for offset compensation (claimed) in wideband, high frequency (HF) detectors and amplifiers, with biased double diode |
| 11/25/2004 | DE102004022354A1 Schaltung und Verfahren zur Bereitstellung pulsweitenmodulierter Signale Circuit and method for providing pulse width modulated signals |
| 11/25/2004 | DE102004017497A1 Verstärkerschaltung Amplifier circuit |
| 11/24/2004 | EP1480332A2 Integratable, voltage-controlled rf power amplifier |
| 11/24/2004 | EP1197001B1 Current-to-voltage converter with controllable gain, and signal processing circuit comprising such converter |
| 11/24/2004 | EP1181768B1 Linearisation and modulation device |
| 11/24/2004 | EP1153477A4 Linear and multi-sinh transconductance circuits |
| 11/24/2004 | CN2659025Y HBT power apmlifier linearizing apparatus |
| 11/24/2004 | CN1550064A Calibration of an adaptive signal conditioning system |
| 11/24/2004 | CN1550063A Power amplifier having a cascode current-mirror self-bias boosting circuit |
| 11/24/2004 | CN1549444A Electric current audio-frequency power amplifier |
| 11/24/2004 | CN1548879A Acoustic quality improvement circuit for Internet electric refrigerator |
| 11/24/2004 | CN1177449C Method of raising efficiency of RF power amplifier based on based band digital predistortion technology |
| 11/24/2004 | CN1177407C Audio-frequency power amplifier apparatus and method thereof |
| 11/23/2004 | US6822518 Low noise amplifier |
| 11/23/2004 | US6822517 Power amplifier module |
| 11/23/2004 | US6822514 Amplifier with miller-effect compensation for use in closed loop system such as low dropout voltage regulator |
| 11/23/2004 | US6822512 High gain amplifier with rail to rail range and frequency compensation |
| 11/23/2004 | US6822511 Integrated power amplifier circuit |
| 11/23/2004 | US6822510 Power-off, loop-through return-loss with negative capacitance |
| 11/23/2004 | US6822509 Differential circuit with a linearity correction loop |
| 11/23/2004 | US6822505 Mobility compensation in MOS integrated circuits |
| 11/23/2004 | US6822434 Monolithic transformer compensated circuit |
| 11/23/2004 | US6822321 Packaged RF power transistor having RF bypassing/output matching network |
| 11/23/2004 | CA2327510C Feed-forward amplifier and controller of the same |
| 11/18/2004 | WO2004100483A1 Polar modulation transmitter |
| 11/18/2004 | WO2004100482A1 Arrangement and method for the digital pre-distortion of a complex baseband input signal |
| 11/18/2004 | WO2004100360A1 Adaptor for adapting amplitudes of radio frequency signals |
| 11/18/2004 | WO2004100358A1 N-way rf power amplifier circuit with increased back-off capability and power added efficiency using selected phase lengths and output impedances |
| 11/18/2004 | WO2004100357A2 Large gain-bandwith amplifier |
| 11/18/2004 | WO2004100215A2 N-way rf power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division |
| 11/18/2004 | WO2004062088B1 Power amplifier circuit and method using bandlimited signal component estimates |
| 11/18/2004 | US20040230115 Methods, systems, and associated implantable devices for radiation dose verification for therapies used to treat tumors |
| 11/18/2004 | US20040229579 High frequency power amplifier component and radio communication system |
| 11/18/2004 | US20040229573 Amplification device with shared amplification stage for transmission and reception |
| 11/18/2004 | US20040228422 Digital convertible radio SNR optimization |
| 11/18/2004 | US20040227577 Adaptive bias circuit for a power amplifier |
| 11/18/2004 | US20040227576 Equal phase multiple gain state amplifier |
| 11/18/2004 | US20040227575 Output stage using positive feedback to provide large current sourcing capability |
| 11/18/2004 | US20040227571 Power amplifier circuit |
| 11/18/2004 | US20040227570 Optimization of error loops in distributed power amplifiers |
| 11/18/2004 | US20040227567 DC offset self-calibration system for a switching amplifier |
| 11/18/2004 | US20040227539 Current sensing for power MOSFET operable in linear and saturated regions |
| 11/18/2004 | DE10317968A1 Control method for an output signal in a voltage-current change device fed with a reference voltage alters an incoming voltage signal to a current signal |
| 11/18/2004 | DE10316559A1 Rückkopplungslinearisierte Sendereinrichtung Rückkopplungslinearisierte transmitter means |
| 11/18/2004 | CA2516302A1 N-way rf power amplifier circuit with increased back-off capability and power added efficiency using unequal input power division |
| 11/18/2004 | CA2516194A1 N-way rf power amplifier circuit with increased back-off capability and power added efficiency using selected phase lengths and output impedances |
| 11/17/2004 | EP1478088A2 Variable high power amplifier with constant overall gain for a satellite communication system |
| 11/17/2004 | EP1476949A1 Power amplification apparatus of portable terminal |
| 11/17/2004 | EP1476942A2 Apparatus and method for controlling adaptive circuits |
| 11/17/2004 | EP1476941A2 Current modulator with dynamic amplifier impedance compensation |
| 11/17/2004 | EP1476940A2 Dynamic bias controller for power amplifier circuits |
| 11/17/2004 | EP0925642B1 Device for amplifying signals |
| 11/17/2004 | CN1547801A Method and device for compensating hybrid distortion |
| 11/16/2004 | US6819720 Noise cancellation in a predistortion architecture |
| 11/16/2004 | US6819194 Tunable voltage-controlled temperature-compensated crystal oscillator |
| 11/16/2004 | US6819185 Amplifier biasing |
| 11/16/2004 | US6819184 RF transistor amplifier linearity using suppressed third order transconductance |
| 11/16/2004 | US6819183 Temperature and process compensation of MOSFET operating in sub-threshold mode |
| 11/16/2004 | US6819180 Radio frequency power amplifier adaptive bias control circuit |
| 11/16/2004 | US6819179 Variable gain low noise amplifier |
| 11/16/2004 | US6819176 High power, wide bandwidth operational amplifier |
| 11/16/2004 | US6819175 Feed forward amplifying circuit |
| 11/16/2004 | US6819174 Amplification device |
| 11/16/2004 | US6819173 Method and apparatus for reduction of distortion in a transmitter |
| 11/16/2004 | US6819171 Amplifier arrangement |
| 11/16/2004 | CA2330395C Power amplifier using upstream signal information |
| 11/11/2004 | WO2004098117A2 Distributed gain network |
| 11/11/2004 | WO2004098045A1 Method and device for power amplifier with high accuracy of an output signal |
| 11/11/2004 | WO2004066540A3 Signal processing system with baseband noise modulation and noise fold back reduction |
| 11/11/2004 | US20040225478 EDR direction estimating method, system, and program, and memory medium for storing the program |
| 11/11/2004 | US20040225477 Method and system of dynamic learning through a regression-based library generation process |
| 11/11/2004 | US20040224635 Variable high power amplifier with constant overall gain for a satellite communication system |
| 11/11/2004 | US20040223624 Audio amplifier circuit and audio IC having the same |
| 11/11/2004 | US20040222925 Inverted-F ferroelectric antenna |
| 11/11/2004 | US20040222852 Wideband constant-gain voltage amplifier |
| 11/11/2004 | US20040222851 Methods and apparatus for substantially reducing nonlinear distortion using multiple nonlinear devices |
| 11/11/2004 | US20040222847 RF amplifier employing active load linearization |
| 11/11/2004 | US20040222846 Power supply based audio compression for digital audio amplifier |
| 11/11/2004 | US20040222845 Class-D power amplifier capable of eliminating excessive response phenomenon when returning to a steady state from an abnormal state and an amplification method thereof |
| 11/10/2004 | EP1475886A1 Method and apparatus having resonant circuit adjustable for minimum power consumption of an amplifier |
| 11/10/2004 | EP1474865A2 Deed forward rf power amplifier with high efficiency main amplifier and highly linear error amplifier |
| 11/10/2004 | EP1474864A2 Output circuit for a semiconductor amplifier element |
| 11/10/2004 | EP1474863A1 Transistor arrangement |
| 11/10/2004 | CN1545801A Adaptive bandwidth control in a kinescope amplifier |
| 11/10/2004 | CN1545759A Linearised radio transmitter |
| 11/10/2004 | CN1175583C Method and circuit arrangement for reducing offset voltage of a signal |
| 11/10/2004 | CN1175559C Power amplifier without cross-over distortion |
| 11/10/2004 | CN1175558C Amplifier output stage |
| 11/10/2004 | CN1175491C Circuit for protection of differential amplifier inputs against electrostatic discharge |
| 11/09/2004 | US6816714 Antenna interface unit |
| 11/09/2004 | US6816107 Technique for changing a range gate and radar coverage |