| 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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| 07/17/2003 | US20030132779 Receiver circuit of semiconductor integrated circuit |
| 07/16/2003 | EP1327308A2 System for closed loop power control using a linear or a non-linear power amplifier |
| 07/16/2003 | EP1327301A2 Amplification circuit with improved linearity |
| 07/16/2003 | EP1327299A1 Cascode bootstrapped analog power amplifier circuit |
| 07/16/2003 | EP1258080B1 System for reducing adjacent-channel interference by pre-linearization and pre-distortion |
| 07/16/2003 | EP1188231B1 Amplifier circuit |
| 07/16/2003 | EP1166433B1 Signal processing |
| 07/16/2003 | CN1430810A RF power amplifier and method for improving efficiency thereof |
| 07/16/2003 | CN1430809A 高频放大器 High-frequency amplifier |
| 07/16/2003 | CN1430808A Radio frequency device with fast charging of input capacitance |
| 07/16/2003 | CN1115067C Method for counting electric power control code value according temp. compensation in radio communication terminal |
| 07/15/2003 | US6594477 Electronic tuner |
| 07/15/2003 | US6593814 Amplifier circuit with protective device |
| 07/15/2003 | US6593813 Negative feed-back amplifier and method for negative feed-back |
| 07/15/2003 | US6593812 Automatic optimization of linearity for envelope feedback RF amplifier linearization |
| 07/15/2003 | US6593811 Nonlinear feedback linearizer |
| 07/15/2003 | US6593808 Set-up method for a linearizing circuit |
| 07/15/2003 | US6593806 Circuits and methods for compensating switched mode amplifiers |
| 07/10/2003 | WO2003056698A2 Power amplifier |
| 07/10/2003 | WO2002013372A3 High performance amplifier circuits using separate power supplies |
| 07/10/2003 | US20030130825 Averaging trace function with indexing by a process signal |
| 07/10/2003 | US20030128071 Variable transconductance variable gain amplifier utilizing a degenerated differential pair |
| 07/10/2003 | US20030128057 Line interface circuit, associated line drivers and methods of operating the same |
| 07/09/2003 | EP1326390A1 Impedance matching in line drivers |
| 07/09/2003 | EP1326335A1 Active broadband switch comprising two inputs and two outputs with a distributed structure, and phase control device with such a switch |
| 07/09/2003 | EP1326328A1 High-frequency amplifier |
| 07/09/2003 | EP1325557A1 Bootstrapped dual-gate class e amplifier circuit |
| 07/09/2003 | EP1325555A1 Configurable power amplifier and bias control |
| 07/09/2003 | CN1429436A Dynamic bias for RF power amplifiers |
| 07/09/2003 | CN1428923A 半导体集成电路器件 The semiconductor integrated circuit device |
| 07/09/2003 | CN1114264C High efficiency power amplifier |
| 07/09/2003 | CN1114263C Method for measuring current in switch circuit, circuit of measuring current and use of said method and circuit |
| 07/09/2003 | CN1114262C Emitter follower circuit having no temp. dependency |
| 07/08/2003 | US6591090 Predistortion control for power reduction |
| 07/08/2003 | US6590940 Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform |
| 07/08/2003 | US6590494 Electronic device |
| 07/08/2003 | US6590456 Active cascode amplifier with an amplitude limiter |
| 07/08/2003 | US6590455 Common-base amplifier with high input overload and/or tunable transimpedance |
| 07/08/2003 | US6590454 System and method for current splitting for variable gain control |
| 07/08/2003 | US6590452 High DC gain cascode amplifier stage with low noise performance |
| 07/08/2003 | US6590451 RF amplifier with feedback based linearization |
| 07/08/2003 | US6590449 Predistortion circuit, low-distortion power amplifier, and control methods therefor |
| 07/08/2003 | US6590446 Amplifier circuit and electronic apparatus using the same |
| 07/08/2003 | US6590437 Logarithmic amplifier |
| 07/08/2003 | US6590431 Maintaining substantially constant trans-conductance without substantially changing power consumption |
| 07/03/2003 | WO2003055084A1 Adaptive transmitter power amplifier |
| 07/03/2003 | WO2003055056A1 Rf transmitter employing linear and non-linear pre-correctors |
| 07/03/2003 | US20030123678 Vehicle power amplifier and voltage supply thereof |
| 07/03/2003 | US20030122623 Gain control circuit for controlling a gain in a variable gain cell |
| 07/03/2003 | US20030122621 Reconfigurable dual-mode multiple stage operational amplifiers |
| 07/03/2003 | US20030122618 Integrated circuit with an analog amplifier |
| 07/03/2003 | US20030122616 Distributed amplifier having a tapered transconductance architecture |
| 07/03/2003 | US20030122605 Current limiting circuit |
| 07/03/2003 | US20030122594 Drive circuit |
| 07/02/2003 | EP1324486A1 Method and circuit for distortion compensation and output control |
| 07/02/2003 | EP1323230A2 Switching power amplifier |
| 07/02/2003 | EP1323229A2 Compact ultra-low noise high-bandwidth pixel amplifier for single-photon readout of photodetectors |
| 07/02/2003 | CN1113456C Arrangement for reducing and stabilizing amplification of Darlington-coupled output stage |
| 07/02/2003 | CN1113455C Method of and apparatus for filtering intermodulation products in radiocommunication system |
| 07/02/2003 | CN1113454C Power amplifier and method for controlling it |
| 07/02/2003 | CN1113453C Linear RF power amplifier with optically activated switches |
| 07/01/2003 | US6587814 Method and apparatus for improving resolution in spectrometers processing output steps from non-ideal signal sources |
| 07/01/2003 | US6587670 Dual mode class D amplifiers |
| 07/01/2003 | US6587514 Digital predistortion methods for wideband amplifiers |
| 07/01/2003 | US6587513 Predistorter |
| 07/01/2003 | US6587243 Second order predistortor for a return laser transmitter |
| 07/01/2003 | US6587002 Thermal control for an amplifier |
| 07/01/2003 | US6586997 Input distortion correction current-feedback amplifier system |
| 07/01/2003 | US6586993 Impedance matching low noise amplifier having a bypass switch |
| 07/01/2003 | US6586992 System and method for increasing power range in a power amplifier using a single voltage supply |
| 07/01/2003 | US6586991 Digital power amplifier |
| 07/01/2003 | US6586990 Operational amplifier having offset cancel function |
| 07/01/2003 | US6586975 Semiconductor device |
| 06/26/2003 | WO2003052992A2 Feedforward notch filter |
| 06/26/2003 | WO2003052926A1 Distributed rf power amplifier with load compensation |
| 06/26/2003 | WO2003052925A1 Bicmos ac filter circuit |
| 06/26/2003 | WO2003052924A1 Feedforward amplifier |
| 06/26/2003 | WO2002071600A3 Safety switch device |
| 06/26/2003 | US20030120448 System for three dimensional positioning and tracking |
| 06/26/2003 | US20030119462 Apparatus for linear transmitter with improved loop gain stabilization |
| 06/26/2003 | US20030118125 Distortion compensation circuit |
| 06/26/2003 | US20030117870 Semiconductor memory and output signal control method and circuit in semiconductor memory |
| 06/26/2003 | US20030117308 Pseudo-differential amplifier and analog-to-digital converter using the same |
| 06/26/2003 | US20030117219 Multi-band power amplifier |
| 06/26/2003 | US20030117217 Distortion-compensated amplifying circuit |
| 06/26/2003 | US20030117216 Broadband predistorsion linearizer |
| 06/26/2003 | US20030117215 Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers |
| 06/26/2003 | US20030117212 Circuits with dynamic biasing |
| 06/26/2003 | US20030117208 InSb signal-conditioning circuit with built-in temperature compensation |
| 06/26/2003 | US20030117116 Semiconductor integrated circuit device |
| 06/26/2003 | US20030117115 Semiconductor integrated circuit device |
| 06/26/2003 | US20030116844 High-frequency signal amplification device and method for manufacturing the same |
| 06/26/2003 | US20030116809 Semiconductor instrument |
| 06/25/2003 | EP1322034A1 Distortion compensation circuit |
| 06/25/2003 | EP1086527B1 A method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and circuit |
| 06/25/2003 | EP1086526B1 Circuit and its use for reducing distortions and noise of square-wave pulses |
| 06/25/2003 | CN1112761C Apparatus for compensating frequency characteristic of reproduction audio signal |
| 06/24/2003 | US6583739 Feed forward distortion reduction system |
| 06/24/2003 | US6583679 High-efficiency high-power amplifier |
| 06/24/2003 | US6583672 Method for controlling bias in an active grid array |