| 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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| 08/17/2004 | US6778113 Canceling feedback resister loading effect in a shunt-shunt feedback circuit |
| 08/17/2004 | US6778020 High-frequency power amplifier |
| 08/17/2004 | US6778019 Method and device for biasing a transistor of a radio frequency amplifier stage |
| 08/17/2004 | US6778018 Linear power amplifier |
| 08/17/2004 | US6778017 Method and apparatus for a multi-pole bandwidth enhancement technique for wideband amplification |
| 08/17/2004 | US6778016 Simple self-biased cascode amplifier circuit |
| 08/17/2004 | US6778015 Distributed amplifier |
| 08/17/2004 | US6778013 Buffer amplifier structures with enhanced linearity |
| 08/17/2004 | US6778009 High gain and wide bandwidth switched capacitor amplifier having a dynamically loaded amplifier output |
| 08/17/2004 | US6777998 Integrated electronic circuit including non-linear devices |
| 08/17/2004 | US6777920 Internal power-supply potential generating circuit |
| 08/12/2004 | WO2004068705A1 Preamplifier circuit, clock switch circuit, and optical receiver using the same |
| 08/12/2004 | WO2004068704A2 Method for controlling power for a mobile communications terminal |
| 08/12/2004 | WO2004068702A1 Front end amplifier circuit and optical receiver using the same |
| 08/12/2004 | WO2004068701A1 Apparatus, methods and articles of manufacture for control in an electromagnetic processor |
| 08/12/2004 | WO2004068700A2 High linearity low noise amplifier |
| 08/12/2004 | WO2004049555A3 Radio frequency power amplifier active self-bias compensation circuit |
| 08/12/2004 | US20040156447 Pre-distortion using a by-pass signal |
| 08/12/2004 | US20040155812 Technique for changing a range gate and radar coverage |
| 08/12/2004 | US20040155731 Low-loss tunable ferro-electric device and method of characterization |
| 08/12/2004 | US20040155713 Transimpedance amplifier with feedback resistive network |
| 08/12/2004 | US20040155711 Power amplifier system and mobile communication terminal device |
| 08/12/2004 | US20040155710 Dual gate low noise amplifier |
| 08/12/2004 | US20040155709 Operational amplification circuit, overheat detecting circuit and comparison circuit |
| 08/12/2004 | US20040155708 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics |
| 08/12/2004 | US20040155707 Polynomial predistorter using complex vector multiplication |
| 08/12/2004 | US20040155704 Feed forward amplifier |
| 08/12/2004 | US20040155703 Method and circuit for correcting the offset of an amplification chain |
| 08/12/2004 | DE202004006606U1 Broadband amplifier for transmission and amplification of high frequency signals especially for cable television has filter units of differing frequency in feedback branch |
| 08/12/2004 | CA2457259A1 Early alert and response system |
| 08/11/2004 | EP1384315B1 Device for controlling a closed circuit current for an amplifier transistor and amplifier circuit |
| 08/11/2004 | CN1520634A Thermally distributed darlington amplifier |
| 08/11/2004 | CN1520519A Disortion detector |
| 08/11/2004 | CN1520032A Circuit of cancelling DC offset applied to variable gain amplifier |
| 08/10/2004 | US6775525 Radio communication apparatus and semiconductor device |
| 08/10/2004 | US6775387 Three-step ramped reference to reduce popping noises on audio circuit |
| 08/10/2004 | US6774834 Method and apparatus for preparing signals to be compared to establish predistortion at the input of an amplifier |
| 08/10/2004 | US6774726 Amplifier with a MOS output stage |
| 08/10/2004 | US6774725 Power supply system for a high frequency power amplifier |
| 08/10/2004 | US6774724 Radio frequency power amplifier active self-bias compensation circuit |
| 08/10/2004 | US6774723 Output stage with stable quiescent current |
| 08/10/2004 | US6774722 Frequency compensation of common-mode feedback loops for differential amplifiers |
| 08/10/2004 | US6774720 Electric field intensity detecting circuit and limiter amplifier |
| 08/10/2004 | US6774719 Power amplifier configuration |
| 08/10/2004 | US6774717 Transmitter including a composite amplifier |
| 08/10/2004 | US6774716 Feedforward amplifier circuitry |
| 08/10/2004 | US6774715 BiCMOS AC filter circuit |
| 08/10/2004 | US6774684 Circuits and methods for controlling transients during audio device power-up and power-down, and systems using the same |
| 08/05/2004 | WO2004066642A2 Signal processing system with baseband noise modulation chopper circuit timing to reduce noise |
| 08/05/2004 | WO2004066540A2 Signal processing system with baseband noise modulation and noise fold back reduction |
| 08/05/2004 | WO2004066489A1 Doherty amplifier and its distortion characteristic compensation method |
| 08/05/2004 | WO2004065996A2 Feed forward amplifier system employing self-generating alignment lists and adaptive controller |
| 08/05/2004 | US20040152433 Feed forward amplifier system employing self-generating alignment lists and adaptive controller |
| 08/05/2004 | US20040152426 Front-end module and communication terminal |
| 08/05/2004 | US20040151329 Prevention of audio pop in a digital audio device |
| 08/05/2004 | US20040151257 Predistortion calibration in a transceiver assembly |
| 08/05/2004 | US20040150479 Power amplifier circuit |
| 08/05/2004 | US20040150478 Adjustable current-mode equalizer |
| 08/05/2004 | US20040150477 Amplifier for alternating signals superimposed on a continuous signal and method for amplifying such signals |
| 08/05/2004 | US20040150473 Distortion cancellation for RF amplifiers using complementary biasing circuitry |
| 08/05/2004 | US20040150471 Method and arrangement relating to multicarrier power amplifiers |
| 08/05/2004 | US20040150429 Semiconductor device with bipolar transistor device |
| 08/05/2004 | US20040150381 Bandgap reference circuit |
| 08/04/2004 | EP1443653A1 Type-II all-digital phase-locked loop (PLL) |
| 08/04/2004 | EP1443646A2 Multi-dimensional hybrid and transpose form finite impulse response filters |
| 08/04/2004 | EP1443641A1 Switchable tuneable bandpass filter with optimized frequency response |
| 08/04/2004 | EP1442518A1 Operational amplifier with chopped input transistor pair |
| 08/04/2004 | EP1442517A2 Adaptive biasing of rf power transistors |
| 08/04/2004 | EP1346473A4 Feed-forward amplifier loop control utilizing if signal processing |
| 08/04/2004 | EP0891650B1 An amplifier circuit, a transmitter and a wireless telephone |
| 08/04/2004 | CN2631125Y Bias circuit for improving linearity of radio frequency power amplifier |
| 08/04/2004 | CN1518793A Automatic optimization of linearity for envelope feedback amplifier linearization |
| 08/04/2004 | CN1518220A Band-pass filter of changable and tunable with optimum frequency response |
| 08/04/2004 | CN1518210A Optical receiving amplifier circuit and optical pickup unit with it |
| 08/04/2004 | CN1518209A Uncorrelated self-adaptive predistorter |
| 08/04/2004 | CN1160850C Driving circuits for switch mode power amplifiers |
| 08/04/2004 | CN1160849C Method and system for automatic controlling phase in linear electronic amplifier |
| 08/04/2004 | CN1160848C Predistortion generator coupled with FR amplifier |
| 08/03/2004 | US6771708 Nonlinear compensator |
| 08/03/2004 | US6771130 Power amplifier and radio communication apparatus using the same |
| 08/03/2004 | US6771129 Base bias current control for an amplifier |
| 08/03/2004 | US6771125 Tuning feed-forward amplifiers and the like |
| 08/03/2004 | US6771112 Semiconductor integrated circuit having pads with less input signal attenuation |
| 07/29/2004 | WO2004064248A1 Device and method for predistorting an input signal |
| 07/29/2004 | WO2004064247A1 Doherty amplifier |
| 07/29/2004 | WO2004055977A3 Phase corrected miller compensation of chopper and nested chopper amplifiers |
| 07/29/2004 | WO2004008630A3 Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit |
| 07/29/2004 | WO2003079406A3 Voltage-limited distributed current source for ultra-broadband impedance termination |
| 07/29/2004 | US20040148323 Multi-dimensional hybrid and transpose form finite impulse response filters |
| 07/29/2004 | US20040145417 Power amplifier module |
| 07/29/2004 | US20040145416 High linearity doherty communication amplifier with integrated output matching unit |
| 07/29/2004 | US20040145415 High linearity low noise amplifier |
| 07/29/2004 | US20040145414 Differential amplifier |
| 07/29/2004 | US20040145412 Boosting circuit |
| 07/29/2004 | US20040145410 Switchable tuneable bandpass filter with optimized frequency response |
| 07/29/2004 | DE4221430B4 Bezugsspannungsschaltung mit schnellem Hochfahren der Leistung ausgehend von einem Bereitschaftszustand mit niedriger Leistung Reference voltage circuit with a fast ramp-up of power from a standby state with low power |
| 07/29/2004 | DE10301499A1 Multimode mobile telephone, e.g. for GSM and 3G networks, has dynamically adaptive predistortion system including unused receiver module to process transmit signal sample |
| 07/29/2004 | DE102004002239A1 Unkorrelierter adaptiver Vorverzerrer Uncorrelated adaptive predistorter |
| 07/29/2004 | DE102004002175A1 Verstärkerschaltung Amplifier circuit |
| 07/28/2004 | EP1441341A2 Preamplifier circuit and method for a disk drive device |