| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 12/09/2003 | US6661290 High-frequency power amplifier |
| 12/09/2003 | US6661279 Semiconductor integrated circuit which outputs first internal power supply voltage and second internal power supply voltage lower than first internal supply power voltage |
| 12/04/2003 | WO2003101135A1 System for allocating channels to calls via updatable priorities |
| 12/04/2003 | WO2003100978A1 Phase-locked loop circuit |
| 12/04/2003 | WO2003100967A1 Fast cascaded class ab output stage with fet devices |
| 12/04/2003 | WO2003100966A2 Predistortion control apparatus |
| 12/04/2003 | WO2003100965A2 High speed amplifier incorporating pre-emphasis |
| 12/04/2003 | WO2003100964A2 Signal correction by predistortion |
| 12/04/2003 | WO2003005574A3 A communication system and arrangements comprising such a communication system |
| 12/04/2003 | WO2002075786A3 Bond wire tuning of rf power transistors and amplifiers |
| 12/04/2003 | US20030224749 Semiconductor integrated circuit device for communication |
| 12/04/2003 | US20030223601 Electronic apparatus having audio output units |
| 12/04/2003 | US20030223595 Shock sound prevention circuit |
| 12/04/2003 | US20030223509 system and method for predistorting a signal to reduce out-of-band error |
| 12/04/2003 | US20030223508 System and method for predistorting a signal using current and past signal samples |
| 12/04/2003 | US20030223287 Virtual Vbias circuit |
| 12/04/2003 | US20030223254 Canceling feedback resister loading effect in a shunt-shunt feedback circuit |
| 12/04/2003 | US20030223162 Circuit configuration for identifying a fault state |
| 12/04/2003 | US20030222719 Asymmetric, voltage optimized, wideband common-gate bi-directional mmic amplifier |
| 12/04/2003 | US20030222718 Fast cascaded class AB MOS output stage |
| 12/04/2003 | US20030222712 Signal predistortion using a combination of multiple predistortion techniques |
| 12/04/2003 | US20030222711 Amplifier and radio frequency tuner |
| 12/04/2003 | US20030222709 High efficiency power amplifier |
| 12/04/2003 | US20030222684 Input/output buffer |
| 12/04/2003 | US20030222634 Offset calibration of current sharing signal for power supply units in redundant operation |
| 12/03/2003 | EP1367856A2 Method and apparatus for feedback reduction in hearing systems |
| 12/03/2003 | EP1367712A2 Amplifier and radio frequency tuner |
| 12/03/2003 | EP1367711A1 Power amplifier with pre-distorter |
| 12/03/2003 | EP1367710A1 Power amplifiers |
| 12/03/2003 | EP1366565A2 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 12/03/2003 | EP1366563A1 Low noise, electric field sensor |
| 12/03/2003 | EP1366562A2 Amplitude and phase modulator |
| 12/03/2003 | EP1119918B1 Transmission power amplifier for a mobile telephone |
| 12/03/2003 | EP0935846B1 Pulse modulation power amplifier with enhanced cascade control method |
| 12/03/2003 | CN2590278Y PSD photoelectric signal limiting amplifier |
| 12/03/2003 | CN1460324A Balanced transformer-less amplifier and offset detection and correction system therefor |
| 12/03/2003 | CN1459925A High-frequency circuit and mfg. method thereof |
| 12/03/2003 | CN1459924A High linearity complementary metal oxid semiconductor transduction circuit |
| 12/03/2003 | CN1459923A Reference voltage circuit |
| 12/03/2003 | CN1130009C Transmitter using predistortion and method of transmitting |
| 12/02/2003 | US6657581 Automotive lane changing aid indicator |
| 12/02/2003 | US6657499 Method and circuit for controlling power amplifiers |
| 12/02/2003 | US6657497 Asymmetric, voltage optimized, wideband common-gate bi-directional MMIC amplifier |
| 12/02/2003 | US6657495 Operational amplifier output stage and method |
| 12/02/2003 | US6657493 Distortion compensation apparatus and distortion compensation method |
| 12/02/2003 | US6657492 System for estimating a non-linear characteristic of an amplifier |
| 12/02/2003 | US6657490 Feedforward signal generation for combined amplifiers |
| 12/02/2003 | US6657489 Operational amplifier circuit with improved feedback factor |
| 12/02/2003 | US6657487 Photodetector preamplifier circuit having a rotating input stage |
| 12/02/2003 | US6657486 MOS differential amplifier circuit having a wide linear input voltage range |
| 12/02/2003 | US6657485 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor |
| 12/02/2003 | CA2326102C Dc isolated audio power amplifier |
| 12/02/2003 | CA2314555C Signal notching system for limiting signal peaks |
| 11/27/2003 | WO2003073604A3 Dynamic bias controller for power amplifier circuits |
| 11/27/2003 | WO2002063761A3 Photodetector preamplifier circuit having a rotating input stage |
| 11/27/2003 | WO2002060050A3 Power amplifier system having frequency and amplifier failure compensation |
| 11/27/2003 | US20030219111 Integrated driver circuitry |
| 11/27/2003 | US20030219069 Signal, interference and noise power measurement |
| 11/27/2003 | US20030218507 Amplification device |
| 11/27/2003 | US20030218506 Bias control circuit for power amplifier |
| 11/27/2003 | US20030218503 High gain amplifier with rail to rail range and frequency compensation |
| 11/27/2003 | US20030218496 Very small current generating ciruit |
| 11/27/2003 | US20030218451 Ultra fast and high efficiency inductive coil driver |
| 11/27/2003 | US20030218185 Semiconductor device, manufacturing thereof and power amplifier module |
| 11/27/2003 | DE10211537C1 Non-linear distortion reduction device for amplifier stage has amplifier output combined via adder with error signal obtained by combining delayed input signal with amplifier output signal |
| 11/26/2003 | EP1365503A2 Power amplifier capable of adjusting operating point |
| 11/26/2003 | EP1364468A2 Calibration of in-phase and quadrature transmit branches of a transmitter |
| 11/26/2003 | EP1364464A2 Adjustment of bias current in a first integrated circuit based on a signal gain of a second integrated circuit |
| 11/26/2003 | EP1364459A2 Safety switch device |
| 11/26/2003 | EP1364457A2 Circuit for linearizing electronic devices |
| 11/26/2003 | EP1364456A2 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control |
| 11/26/2003 | CN1459144A Circuit and method for input side impedance matching of power amplifier in electronic device |
| 11/25/2003 | US6654591 Low distortion signal amplifier system and method |
| 11/25/2003 | US6654427 Signal notching system for limiting signal peaks |
| 11/25/2003 | US6653909 Digital signals, radio transmitter circuits and method |
| 11/25/2003 | US6653902 Amplifier power control circuit |
| 11/25/2003 | US6653900 Driving method and related apparatus for improving power efficiency of an operational transconductance amplifier |
| 11/25/2003 | US6653899 Audio amplifier power and temperature controller having network detecting and associated methods |
| 11/25/2003 | US6653898 High efficiency stage-switching CDMA power amplifier |
| 11/25/2003 | US6653897 Power amplifier apparatus |
| 11/25/2003 | US6653894 Integrated current mirror in output stage of operational amplifier |
| 11/25/2003 | US6653886 Power saving amplifier with selectable current levels |
| 11/20/2003 | WO2003096548A2 Method for producing a transmission signal |
| 11/20/2003 | WO2003096526A1 Hybrid distortion compensation method and hybrid distortion compensation device |
| 11/20/2003 | WO2003096439A1 Integrated circuit with internal impedance matching circuit |
| 11/20/2003 | WO2003079540A3 Arrangement for reducing non-linear distortions in an output signal of an amplifier stage |
| 11/20/2003 | WO2003034387A3 Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator |
| 11/20/2003 | US20030214359 Power amplifying apparatus and radio communications apparatus using same |
| 11/20/2003 | US20030214356 Amplifier and radio frequency tuner |
| 11/20/2003 | US20030214352 Power amplifier capable of adjusting operating point |
| 11/20/2003 | US20030213976 Process and device for controlling the operation of a bipolar transistor in class A |
| 11/19/2003 | EP1363394A1 Switching power amplifier, and switching control method of the switching power amplifier |
| 11/19/2003 | EP1362429A1 Cartesian loop systems with digital processing |
| 11/19/2003 | EP1362416A2 Variable bias control for switch mode rf amplifier |
| 11/19/2003 | EP1362415A2 Power control of switched-mode power amplifiers with one or more stages |
| 11/19/2003 | EP1195006B1 Reducing distortion of signals |
| 11/19/2003 | CN1457555A Calibration of in-phase and quadrature transmit branches of transmitter |
| 11/19/2003 | CN1457146A AB amplifier for controlling static current |
| 11/19/2003 | CN1457144A Transient-inhibiting audio-frequency circuit and method |
| 11/19/2003 | CN1128511C Improved pilot detection method for control system that reduces distortion produced by electrical circuits |