| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/18/2010 | WO2010018528A1 Arrangement for calibrating the quiescent operating point of a push-pull amplifier |
| 02/18/2010 | WO2009142718A3 Predictive feedback compensation for pwm switching amplifiers |
| 02/18/2010 | US20100039180 Amplifying circuit |
| 02/18/2010 | US20100039179 Folded cascode operational amplifier having improved phase margin |
| 02/18/2010 | US20100039178 Amplifier circuit |
| 02/18/2010 | US20100039177 Amplifier Arrangement and Method for Amplification |
| 02/18/2010 | US20100039176 Synchronized temperature protection for class-ab amplifiers |
| 02/18/2010 | US20100039175 Driving amplifier circuit with digital control and dc offset equalization |
| 02/18/2010 | US20100039173 Single-ended sense amplifier using dynamic reference voltage and operation method thereof |
| 02/18/2010 | US20100039159 Control device and control method |
| 02/17/2010 | EP2154852A2 DC Offset correction in a transmitter |
| 02/17/2010 | EP2154783A1 Amplifying circuit |
| 02/17/2010 | EP2153521A2 Tunable multi frequency bands filter device |
| 02/17/2010 | CN201409116Y Radio-frequency power amplifier biasing circuit |
| 02/17/2010 | CN201409114Y Variable-frequency speed regulation circuit of shaded-pole motor |
| 02/17/2010 | CN201408832Y Balun impedance converter used for radio frequency push-pull power amplifier |
| 02/17/2010 | CN101652925A Flexible dynamic range amplifier |
| 02/17/2010 | CN101652924A sampling frequency reduction for switching amplifiers |
| 02/17/2010 | CN101651449A Optical input preamplifier for optical communication receiver |
| 02/16/2010 | US7664473 Amplifier control device |
| 02/16/2010 | US7663444 Amplifying circuit utilizing nonlinear gate capacitance for enhancing linearity and related method thereof |
| 02/16/2010 | US7663443 Active balun circuit |
| 02/16/2010 | US7663442 Data receiver including a transconductance amplifier |
| 02/16/2010 | US7663440 Amplifier circuit, semiconductor device, and controlling method |
| 02/16/2010 | US7663439 Operational amplifier |
| 02/16/2010 | US7663438 Differential amplifier circuit |
| 02/16/2010 | US7663437 Low flicker noise operational amplifier |
| 02/16/2010 | US7663435 Doherty amplifying apparatus using a harmonic control circuit |
| 02/16/2010 | US7663434 Doherty amplifier |
| 02/16/2010 | US7663409 Voltage/current converter circuit and method for providing a ramp current |
| 02/16/2010 | US7663089 Receiving apparatus |
| 02/11/2010 | WO2010017078A1 Method and apparatus for josephson distributed output amplifier |
| 02/11/2010 | WO2010016444A1 Power amplification device, and transmission device and communication device using same |
| 02/11/2010 | WO2009153450A3 D-class digital amplifier including a noise reducer |
| 02/11/2010 | WO2009153449A3 D-class digital amplifier configured for shaping non-idealities of an output signal |
| 02/11/2010 | US20100033464 Class AB amplifier circuit and display apparatus |
| 02/11/2010 | US20100033463 Operational amplifier circuit and display panel driving apparatus |
| 02/11/2010 | US20100033253 Techniques for improving balun loaded-q |
| 02/11/2010 | US20100033252 Method and apparatus for josephson distributed output amplifier |
| 02/11/2010 | US20100033251 Output stage circuit and operational amplifier |
| 02/11/2010 | US20100033250 Differential amplifier |
| 02/11/2010 | US20100033249 Differential amplifier |
| 02/11/2010 | US20100033248 Power Amplifier and Common Mode Choke Coil Apparatus |
| 02/11/2010 | US20100033247 True current limiting |
| 02/11/2010 | US20100033243 Amplifying Apparatus |
| 02/11/2010 | US20100033242 System and method for im3 reduction and cancellation in amplifiers |
| 02/11/2010 | US20100033241 High frequency amplifier |
| 02/11/2010 | DE19944519B4 Schaltungsanordnung zum Ansteuern einer Last Circuit arrangement for driving a load |
| 02/11/2010 | DE102004033129B4 Ansteuerschaltung, Vorrichtung und Verfahren zur Geräuschunterdrückung Drive circuit, apparatus and method for noise suppression |
| 02/10/2010 | EP2151059A1 Low-power digital-to-analog converter |
| 02/10/2010 | EP2151049A1 Dual mode power amplifier |
| 02/10/2010 | EP2151048A1 Tuning multiport amplifiers |
| 02/10/2010 | EP2151047A1 Linear rf amplifier with polar feedback |
| 02/10/2010 | EP1986738B1 Class-e radio frequency power amplifier with feedback control |
| 02/10/2010 | CN201403076Y Millimeter wave single-chip integrated low noise amplifier |
| 02/10/2010 | CN201403075Y Multi-way PWM signal power amplifier |
| 02/10/2010 | CN201398967Y Cardiac monitoring system based on bluetooth phone |
| 02/10/2010 | CN101647199A Method and system for increasing sampling frequency for switching amplifiers |
| 02/10/2010 | CN101647198A Distributed multi-stage amplifier |
| 02/10/2010 | CN101647197A Pulse amplifier |
| 02/10/2010 | CN101645696A Differential amplifier |
| 02/10/2010 | CN101645695A Operational amplifier circuit and display panel driving apparatus |
| 02/10/2010 | CN101645694A Operational amplifier circuit and display panel driving apparatus |
| 02/10/2010 | CN101645693A Class AB amplifier circuit and display apparatus |
| 02/10/2010 | CN101645692A Digital proportional amplifier |
| 02/10/2010 | CN100589322C Conversion circuit for converting differential signal into single-phase signal |
| 02/09/2010 | US7660564 High-power amplifier apparatus for TDD wireless communication system |
| 02/09/2010 | US7659781 Active resistor used in a feedback amplifier particularly useful for proximity communication |
| 02/09/2010 | US7659780 Gain control circuit |
| 02/09/2010 | US7659778 Apparatus and method for class D amplifier with sampling rate conversion |
| 02/09/2010 | US7659766 Semiconductor integrated circuit device enabling to produce a stable constant current even on a low power-source voltage |
| 02/09/2010 | US7659756 MOSFET transistor amplifier with controlled output current |
| 02/09/2010 | CA2351793C System for the transmission of electromagnetic signals across a structure consisting of modules organized to obtain a two-for-one redundancy |
| 02/04/2010 | WO2010014993A1 Adaptive bias current generation for switched-capacitor circuits |
| 02/04/2010 | WO2010014984A2 Multi-mode configurable transmitter circuit |
| 02/04/2010 | WO2010013514A1 Power amplification device, and transmission device and communication device both using thereof |
| 02/04/2010 | WO2010013295A1 Offset elimination circuit, associative memory equipped with the same, and offset voltage elimination method |
| 02/04/2010 | WO2009092475A3 Method and apparatus for improvement of matching fet currents using a digital to analog converter |
| 02/04/2010 | US20100028023 Optical receiver |
| 02/04/2010 | US20100026391 Amplifier |
| 02/04/2010 | US20100026390 Detector circuit and system for a wireless communication |
| 02/04/2010 | US20100026389 Dual mode power amplifier output network |
| 02/04/2010 | US20100026388 Balanced Amplifying Device Having a Bypass Branch |
| 02/04/2010 | US20100026387 Integrated doherty type amplifier arrangement with high power efficiency |
| 02/04/2010 | US20100026384 Method and Circuit for Protecting a MOSFET |
| 02/04/2010 | DE102008034456A1 Direct current coupled cascaded transistor amplifier for providing high output voltage to electrostatic loudspeaker of high end stereo system, has optoelectronic coupler bridging potential difference between pre-stage and driver stages |
| 02/04/2010 | DE102008034324A1 Amplifier circuit i.e. push-pull amplifier circuit, has two transistors and diode arranged in totem pole circuit, where diode is prestressed in initial state of amplifier circuit, and preamplifier arranged upstream to amplifier |
| 02/04/2010 | DE102008028074A1 Device for generating quasi-analog, poor power loss transmission signals, has multiple power supplies, which are placed selectively at transmitter stage by switch, in order to provide output signal with amplitude modulation |
| 02/03/2010 | EP2149989A1 Integrated circuit |
| 02/03/2010 | EP1787387B1 A method and apparatus for pre-conditioning an electrical signal |
| 02/03/2010 | CN201398189Y Mobile phone transmission signal amplifying circuit |
| 02/03/2010 | CN201398181Y Doherty high-efficiency amplifier with dual peak amplifier |
| 02/03/2010 | CN201398180Y Doherty high-efficiency amplifier with dual carrier amplifier |
| 02/03/2010 | CN201398179Y Final-stage two-way amplifier of power amplifier used in CDMA base station system |
| 02/03/2010 | CN201398178Y Final-stage three-way amplifier of power amplifier used in CDMA base station system |
| 02/03/2010 | CN101640517A Switching audio amplifier, digital speaking device and audio amplification method |
| 02/03/2010 | CN101640516A Digital predistortion power amplifier and signal processing method thereof |
| 02/03/2010 | CN100588189C Isolation interface with capacitive barrier and method for transmitting signal by means of such isolation interface |
| 02/03/2010 | CN100588115C Half-wave impulse bandwidth modulation D audio amplifier |
| 02/02/2010 | US7657238 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals |