| 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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| 06/24/2004 | US20040122627 Phase-error based signal alignment |
| 06/24/2004 | US20040121745 Method and apparatus for impedance matching in an amplifier using lumped and distributed inductance |
| 06/24/2004 | US20040121741 Adaptive controller for linearization of transmitter with impairments |
| 06/24/2004 | US20040120420 Distortion compensator |
| 06/24/2004 | US20040119834 Line driver with active termination |
| 06/24/2004 | US20040119595 Method for failure detection in a radio frequency device |
| 06/24/2004 | US20040119538 Amplifier and method for canceling nonlinearity in amplifier |
| 06/24/2004 | US20040119535 Feed forward amplifier system using penalties and floors for optimal control |
| 06/24/2004 | US20040119534 Model-based feed-forward linearization of amplifiers |
| 06/24/2004 | US20040119533 High linearity doherty communication amplifier with bias control |
| 06/24/2004 | US20040119140 RF passive circuit and RF amplifier with via-holes |
| 06/24/2004 | DE10353047A1 Variable-gain amplifier for radio frequency signals, has gain bypass device for passing RF input signal to output, bypassing field effect transistor when varying gain |
| 06/23/2004 | EP1432194A1 Adaptive predistortion scheme with delay tracking |
| 06/23/2004 | EP1432132A1 Wireless communication unit and transmitter circuit therefor |
| 06/23/2004 | EP1432121A1 Temperature compensated amplifer circuit |
| 06/23/2004 | EP1432120A1 Audio power amplifier |
| 06/23/2004 | EP1430597A2 An amplifier pre-distorter method and apparatus |
| 06/23/2004 | EP1430596A1 Temperature-stabilised amplifier circuit |
| 06/23/2004 | CN1507188A Adaptive carrier inhibiting method for multiple-carrier linear power amplifier |
| 06/22/2004 | US6753736 Amplifier circuit for AM broadcasting |
| 06/22/2004 | US6753735 High frequency power amplifier and wireless communication module |
| 06/22/2004 | US6753734 Multi-mode amplifier bias circuit |
| 06/22/2004 | US6753731 Operation amplifier circuit, drive circuit and method of controlling operation amplifier circuit |
| 06/22/2004 | US6753730 Differential amplifier and filter circuit using the same |
| 06/22/2004 | US6753729 Self-oscillating variable frequency closed loop Class D amplifier |
| 06/22/2004 | US6753728 Distortion reducing circuit |
| 06/22/2004 | US6753726 Apparatus and method for an offset-correcting sense amplifier |
| 06/22/2004 | CA2200387C Method of correcting nonlinearities of an amplifier, and radio transmitter employing a method of this type |
| 06/22/2004 | CA2158628C Grounded-base transistor amplifier |
| 06/22/2004 | CA2126987C Power amplifier linearization in a tdma mobile radio system |
| 06/17/2004 | WO2004051876A1 Power limit device and digital radio transmitter using the same |
| 06/17/2004 | WO2004051875A1 Digitally convertible radio |
| 06/17/2004 | WO2004051845A1 Amplifier circuit |
| 06/17/2004 | WO2004051844A2 Digital predistortion system for linearizing a power amplifier |
| 06/17/2004 | WO2004034569A3 Apparatus, methods and articles of manufacture for multiband signal processing |
| 06/17/2004 | WO2004032188A3 Packaged rf power transistor having rf bypassing/output matching network |
| 06/17/2004 | WO2004019484A3 Enhanced efficiency ldmos based feed forward amplifier |
| 06/17/2004 | US20040116162 Amplifying circuit, speaker system, and mobile information terminal employing amplifying circuit |
| 06/17/2004 | US20040116152 Dual-mode transmitter |
| 06/17/2004 | US20040116083 Linear power amplification method and linear power amplifier |
| 06/17/2004 | US20040113701 Bias circuit for a radio frequency power amplifier |
| 06/17/2004 | US20040113700 Adaptive active bias compensation technique for power amplifiers |
| 06/17/2004 | US20040113699 Radio frequency power amplifier and communication system |
| 06/17/2004 | US20040113698 Signal amplifier using a doherty amplifier |
| 06/17/2004 | US20040113696 Capacitor compensation in miller compensated circuits |
| 06/17/2004 | US20040113695 Amplifier circuit |
| 06/17/2004 | US20040113694 High gain, high bandwidth cmos transimpedance amplifier |
| 06/17/2004 | US20040113693 Amplifier and method for processing signals |
| 06/17/2004 | US20040113687 Two-stage amplifier |
| 06/17/2004 | US20040113684 Center of gravity compensation of Class-D amplifier |
| 06/17/2004 | US20040112350 High-frequency ignition system for an internal combustion engine |
| 06/17/2004 | DE4426157B4 Hochfrequenz-Verstärker High-frequency amplifier |
| 06/17/2004 | DE10251308A1 Schaltung und Verfahren zum Steuern des Ruhestroms in einer geschalteten Kondensatorschaltung Circuit and method for controlling the quiescent current in a switched capacitor circuit |
| 06/16/2004 | EP1429454A1 Center of gravity compensation of class-D amplifier |
| 06/16/2004 | EP1429453A1 Linear power amplification method and linear power amplifier |
| 06/16/2004 | EP1429452A1 Adaptive active bias compensation technique for power amplifiers |
| 06/16/2004 | EP1428313A2 A system and method for minimizing dissipation in rf power amplifiers |
| 06/16/2004 | EP1428289A1 Tunable filters having variable bandwidth and variable delay |
| 06/16/2004 | EP0746902B1 Predistorter for high frequency optical communications devices |
| 06/16/2004 | CN1154390C Electric efficiency raising circuit of radio-frequency power amplifier in double-mode mobile telephone |
| 06/16/2004 | CN1154311C Amplitude calculating circuit |
| 06/16/2004 | CN1154227C Nested feedforward distortion reducing system |
| 06/15/2004 | US6751447 Adaptive digital pre-distortion circuit using output reference signal and method of operation |
| 06/15/2004 | US6751268 Bandpass predistorting expansion method and apparatus for digital radio transmission |
| 06/15/2004 | US6751266 RF transmitter employing linear and non-linear pre-correctors |
| 06/15/2004 | US6751265 Method and system of amplitude modulation using dual/split channel unequal amplification |
| 06/15/2004 | US6750724 Multistage amplifier |
| 06/15/2004 | US6750722 Bias control for HBT power amplifiers |
| 06/15/2004 | US6750721 HBT linearizer and power booster |
| 06/15/2004 | US6750720 High-frequency amplifier |
| 06/15/2004 | US6750718 Radio-frequency amplifier |
| 06/15/2004 | US6750713 Variable gain amplifier |
| 06/15/2004 | US6750712 Method and apparatus for voltage clamping in feedback amplifiers using resistors |
| 06/15/2004 | US6750710 Distortion reduction |
| 06/15/2004 | US6750709 Bipolar transistor-based linearizer with programmable gain and phase response system |
| 06/15/2004 | US6750708 Miniaturized buffer amplifier and electronic circuit unit using same |
| 06/15/2004 | US6750707 Multi-carrier RF amplifiers |
| 06/15/2004 | US6750706 Control method and circuit for feedforward distortion compensation amplifier |
| 06/15/2004 | US6750705 Class D amplifier energy control |
| 06/10/2004 | WO2004049561A1 Pulse width-modulated noise shaper |
| 06/10/2004 | WO2004049560A1 Method and device for correcting signal distortions in an amplifier device |
| 06/10/2004 | WO2004049559A1 Systems and methods of dynamic bias switching for radio frequency power amplifiers |
| 06/10/2004 | WO2004049558A1 Real-time digital phase and gain adaptation method using feedback and arrangement using such a method |
| 06/10/2004 | WO2004049557A2 High-speed class-ab transconductance stage |
| 06/10/2004 | WO2004049555A2 Radio frequency power amplifier active self-bias compensation circuit |
| 06/10/2004 | WO2004036741B1 Frequency compensation of common-mode feedback loops for differential amplifiers |
| 06/10/2004 | WO2002097972A3 Power amplifier control |
| 06/10/2004 | US20040111681 Designing methods and circuits for multi-band electronic circuits |
| 06/10/2004 | US20040109277 Limit circuit |
| 06/10/2004 | US20040109276 System and method for protecting an audio amplifier output stage power transistor |
| 06/10/2004 | US20040108902 High frequency power amplifier electric parts and radio telecommunication system |
| 06/10/2004 | US20040108901 Linear power amplifier with multiple output power levels |
| 06/10/2004 | US20040108900 Saturated power amplifier with selectable and variable output power levels |
| 06/10/2004 | US20040108899 Amplifier having MOS capacitor compensation |
| 06/10/2004 | US20040108898 Reduced architecture for multibranch feedforward power amplifier linearizers |
| 06/10/2004 | US20040108894 Stage of a power generator of high frequency current |
| 06/10/2004 | US20040108891 Switched capacitor circuit |
| 06/09/2004 | EP1427101A1 Switching amplification apparatus |
| 06/09/2004 | EP1427100A1 Preamplification circuit |
| 06/09/2004 | EP1425852A1 Rf power amplifier transistor quiescent current checking and adjusting |