| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/04/2006 | US20060094389 Push-pull amplifier and frequency converter circuit |
| 05/04/2006 | US20060094388 Method and system for single sideband mixing receiver architecture for improving signal quality |
| 05/04/2006 | US20060091959 Low noise amplifier with low noise, high isolation bias circuit |
| 05/04/2006 | US20060091958 Multilevel power amplifier architecture using multi-tap transformer |
| 05/04/2006 | US20060091955 Circuits and methods for improving slew rate of differential amplifiers |
| 05/04/2006 | US20060091954 Method and system for common mode feedback circuitry for RF buffers |
| 05/04/2006 | US20060091953 Class B amplifier with process variation independent deadband |
| 05/04/2006 | US20060091952 High-swing folded cascode having a novel gain-boost amplifier |
| 05/04/2006 | US20060091951 Integrated circuit amplifier device and method using fet tunneling gate current |
| 05/04/2006 | US20060091946 Wideband feed forward linear power amplifier |
| 05/04/2006 | US20060091945 Switching power amplifier and method for amplifying a digital input signal |
| 05/04/2006 | CA2585016A1 A signal-enhancement system for photodetector outputs |
| 05/03/2006 | EP1653607A1 Circuit for varying gain of preamplifier |
| 05/03/2006 | EP1653606A1 High efficiency amplifier |
| 05/03/2006 | EP1653605A1 Noise shaper for shaping a power spectral density of an error signal and method therefor |
| 05/03/2006 | EP1653604A1 Switching power amplifier and method for amplifying a digital input signal |
| 05/03/2006 | EP1652300A1 Differential circuits |
| 05/03/2006 | EP1652296A1 Absorptive microwave single pole single throw switch |
| 05/03/2006 | EP1652295A2 Temperature-insensitive bias circuit for high-power amplifiers |
| 05/03/2006 | EP1652294A1 Cartesian loop transmitter and method of adjusting an output level of such transmitter |
| 05/03/2006 | EP1652020A1 A control circuit for diode based rf circuits |
| 05/03/2006 | EP1183858B1 Slic architecture and interfaces |
| 05/03/2006 | CN1768474A Digital amplifier |
| 05/03/2006 | CN1768473A Switchable amplifier circuit having reduced shutdown current |
| 05/03/2006 | CN1768472A Digital amplifier |
| 05/03/2006 | CN1768471A Digital amplifier |
| 05/03/2006 | CN1767379A Circuits and methods for improving slew rate of differential amplifiers |
| 05/03/2006 | CN1767378A Speaker driving device and audio output system |
| 05/03/2006 | CN1767377A Digital predistorter and predistortion method therefor |
| 05/03/2006 | CN1767376A Fuzzy power protecting circuit |
| 05/03/2006 | CN1767375A Device for eliminating digital audio apparatus noise |
| 05/03/2006 | CN1767373A High efficiency amplifier |
| 05/03/2006 | CN1767064A Sense amplifier with low common mode differential input signal |
| 05/03/2006 | CN1254913C Power dividing/merging circuit, high power amplifier and balanced-to-unbalanced transformer circuit |
| 05/03/2006 | CN1254912C Wideband dual amplifier circuits |
| 05/02/2006 | US7039377 Switchable gain amplifier |
| 05/02/2006 | US7039376 AGC amplifier circuit for use in a digital satellite broadcast receiver apparatus |
| 05/02/2006 | US7039204 Equalization for audio mixing |
| 05/02/2006 | US7038603 Analog to digital converter using analog-valued floating-gate transistors |
| 05/02/2006 | US7038548 Amplifier circuit for AM broadcasting |
| 05/02/2006 | US7038547 Amplifier circuit |
| 05/02/2006 | US7038546 High-power amplification circuit for amplifying a high frequency signal |
| 05/02/2006 | US7038544 Use of analog-valued floating-gate transistors for parallel and serial signal processing |
| 05/02/2006 | US7038542 Variable gain amplifier |
| 05/02/2006 | US7038539 RF amplifier employing active load linearization |
| 05/02/2006 | US7038538 Folded cascode high voltage operational amplifier with class AB source follower output stage |
| 05/02/2006 | US7038537 Operational amplifier circuit, sample/hold circuit and filter circuit using the operational amplifier circuit |
| 05/02/2006 | US7038536 Power supply processing for power amplifiers |
| 05/02/2006 | US7038535 PWM digital amplifier with high-order loop filter |
| 05/02/2006 | US7038534 Class D audio amplifier and method for compensation of power supply voltage influence on output audio signal in class D audio amplifier |
| 05/02/2006 | US7038524 Method and apparatus for extending the size of a transistor beyond one integrated circuit |
| 05/02/2006 | US7038520 Timing signal generating circuit and receiver circuit designed to speed up signal transmission |
| 05/02/2006 | US7038501 Transconductor circuit for compensating the distortion of output current |
| 05/02/2006 | US7038500 Circuit arrangement for controlling power semiconductor transistors |
| 05/02/2006 | US7038498 Input/output circuit, reference-voltage generating circuit, and semiconductor integrated circuit |
| 05/02/2006 | US7038447 Sensor circuit and method of producing it |
| 05/02/2006 | US7038187 Circuit for measuring photo-current level in fiber optic links |
| 05/02/2006 | CA2420710C Power-shifting rf amplifiers |
| 04/27/2006 | WO2006042684A1 Control circuit for controlling the current and/or voltage of an electronic circuit |
| 04/27/2006 | WO2006018784A3 High accuracy power detector for handset applications |
| 04/27/2006 | WO2005078921A3 Radio frequency low noise amplifier with automatic gain control |
| 04/27/2006 | US20060087378 Preamplifier circuit having a variable feedback resistance |
| 04/27/2006 | US20060087377 Amplifier bias circuit, method for biasing an amplifier and integrated circuit comprising an amplifier bias circuit |
| 04/27/2006 | US20060087376 Hybrid active combiner and circulator |
| 04/27/2006 | US20060087374 Feed forward amplifier employing bias circuit topologies for minimization of RF amplifier memory effects |
| 04/27/2006 | US20060087371 High efficiency amplifier |
| 04/27/2006 | US20060087370 Charge amplifier |
| 04/27/2006 | US20060087369 Amplifier system and method |
| 04/27/2006 | US20060086891 Signal-enhancement system for photodectector outputs |
| 04/27/2006 | DE112004001202T5 FET-Verstärker, Pulsmodulationsmodul und Radarvorrichtung FET amplifier, pulse modulation module and radar apparatus |
| 04/26/2006 | EP1650871A1 Method and circuit arrangement for compensating for variations of the charge-to-voltage conversion factor in a detector |
| 04/26/2006 | EP1649596A2 Variable gain amplifier system |
| 04/26/2006 | EP1649595A2 Modulated triangular wave amplifier |
| 04/26/2006 | EP1649594A1 Amplifying circuit comprising an envelope modulated limit cycles modulator circuit |
| 04/26/2006 | EP1485943A4 On-chip ac coupled circuit |
| 04/26/2006 | EP1250751B1 Electronic circuit |
| 04/26/2006 | EP1118176A4 In-line predistorter for linearization of electronic and optical signals |
| 04/26/2006 | CN2775977Y Smart cell phone base station signal amplifying device |
| 04/26/2006 | CN2775937Y Two line passive analogue signalisolation amplifier |
| 04/26/2006 | CN2775678Y Solid state power amplifying and protective device for radar |
| 04/26/2006 | CN1765070A Automatic bit rate control circuit |
| 04/26/2006 | CN1765048A Neutralization of feedback capacitance in amplifiers |
| 04/26/2006 | CN1764304A Method for recording power amplifier work state information in wireless communication system |
| 04/26/2006 | CN1764064A Millimeter wave amplifier |
| 04/26/2006 | CN1764063A D sort audio power amplifier |
| 04/26/2006 | CN1254026C Instrument for communication system |
| 04/26/2006 | CN1254008C Amplifier of display device, drive circuit, mobile phone and portable electronic apparatus |
| 04/25/2006 | US7035616 Two-stage variable-gain mixer employing shunt feedback |
| 04/25/2006 | US7035604 Communications signal amplifiers having independent power control and amplitude modulation |
| 04/25/2006 | US7035349 Signal compensation circuit and demodulating circuit with high-speed and low-speed feedback loops |
| 04/25/2006 | US7035030 Amplifier apparatus and magnetic recording and reproducing apparatus having the same |
| 04/25/2006 | US7034787 Output circuit for gray scale control, testing apparatus thereof, and method for testing output circuit for gray scale control |
| 04/25/2006 | US7034631 Symmetric microwave filter and microwave integrated circuit merging the same |
| 04/25/2006 | US7034620 RF power amplifier employing bias circuit topologies for minimization of RF amplifier memory effects |
| 04/25/2006 | US7034619 Monolithic array amplifier with periodic bias-line bypassing structure and method |
| 04/25/2006 | US7034618 Temperature compensating circuit |
| 04/25/2006 | US7034617 Semiconductor integrated circuit for high frequency power amplifier, electronic component for high frequency power amplifier, and radio communication system |
| 04/25/2006 | US7034616 Operational amplification circuit, overheat detecting circuit and comparison circuit |
| 04/25/2006 | US7034615 CMOS operational amplifier |
| 04/25/2006 | US7034614 Modified polar amplifier architecture |