| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/06/2009 | CN101427461A Programmable low noise amplifier and method |
| 05/06/2009 | CN101427460A Output networks in combination with LINC technique |
| 05/06/2009 | CN101425806A Analog electricity saving device for electric charge allocation and method thereof |
| 05/06/2009 | CN101425796A Digital pulse width modulation system and method capable of digit drop |
| 05/06/2009 | CN101425785A Transconductance-capacitor compensation circuit for rolling over network |
| 05/06/2009 | CN101425784A Non-filter D type audio amplifier based on chaotic spread-spectrum modulation technique |
| 05/06/2009 | CN101425783A Three-level double-current hysteresis loop power amplifier |
| 05/06/2009 | CN101425780A Low-noise wide-band amplifier circuit |
| 05/06/2009 | CN101425779A Frequency converter and receiver and transmitter using the same |
| 05/06/2009 | CN100486111C Class d amplifier |
| 05/06/2009 | CN100486109C Voltage generating circuit |
| 05/06/2009 | CN100486108C Sub-micron self-biased cascode power amplifier |
| 05/06/2009 | CN100486107C Method and device for self-adaptive regulation of power amplifier offset voltage |
| 05/05/2009 | US7529053 TMR/GMR amplifier with input current compensation |
| 05/05/2009 | US7528662 Signal amplification apparatus and signal amplification method |
| 05/05/2009 | US7528661 Low quiescent current output stage and method with improved output drive |
| 05/05/2009 | US7528660 Power amplifier circuit and test apparatus |
| 05/05/2009 | US7528659 Fully differential amplification device |
| 05/05/2009 | US7528658 Threshold voltage compensation for a two stage amplifier |
| 05/05/2009 | US7528657 Baseband filter start-up circuit |
| 05/05/2009 | US7528656 Push-pull amplifier and method for low noise amplification |
| 05/05/2009 | US7528655 Amplifier with improved compensation topology and related amplifier circuit, system, and method |
| 05/05/2009 | US7528654 Analog transconductance amplifier |
| 05/05/2009 | US7528653 Class-D amplifier with noise-immunity feedback |
| 05/05/2009 | US7528652 Amplifying device and radio communication circuit |
| 05/05/2009 | US7528651 Noise free implementation of PWM modulator combined with gate driver stage in a single die |
| 05/05/2009 | US7528650 Multi-channel digital amplifier, signal processing method thereof, and audio reproducing system having the same |
| 05/05/2009 | US7528637 Driver circuit |
| 05/05/2009 | US7528634 High voltage comparator using sliding input low voltage devices |
| 04/30/2009 | WO2009055035A2 High sensitivity two-stage amplifier |
| 04/30/2009 | WO2009054265A1 Audio power amplifier |
| 04/30/2009 | WO2009054096A1 Distribution type amplification device and amplifier |
| 04/30/2009 | WO2009053369A1 Sample rate conversion in delta-sigma modulators |
| 04/30/2009 | WO2009029563A3 Audio amplifiers and methods of generating audio signals |
| 04/30/2009 | WO2009000236A3 High-dynamic ammeter with small time constant |
| 04/30/2009 | WO2008147980A4 Multi-mode audio amplifiers |
| 04/30/2009 | WO2007048007A3 Wideband circuits and methods |
| 04/30/2009 | WO2007044148A3 Apparatus and method for adaptive biasing of a doherty amplifier |
| 04/30/2009 | WO2007019147A3 Resonant types of common-source/common-emitter structure for high gain amplification |
| 04/30/2009 | WO2004068700A9 High linearity low noise amplifier |
| 04/30/2009 | US20090110409 High sensitivity two-stage amplifier |
| 04/30/2009 | US20090108944 Low-noise amplifier circuit including band-stop filter |
| 04/30/2009 | US20090108943 Low noise amplifier |
| 04/30/2009 | US20090108942 Low noise, low power and high bandwidth capacitive feedback trans-impedance amplifier with differential fet input and bipolar emitter follower feedback |
| 04/30/2009 | US20090108941 Transconductance compensating bias circuit and amplifier |
| 04/30/2009 | US20090108939 Amplifying apparatus and bias stabilization circuit |
| 04/30/2009 | US20090108938 Circuit and method for dynamic current compensation |
| 04/30/2009 | US20090108937 Low noise amplifier and differential amplifier |
| 04/30/2009 | US20090108936 Combination trim and CMFB circuit and method for differential amplifiers |
| 04/30/2009 | US20090108935 Variable gain amplifier including series-coupled cascode amplifiers |
| 04/30/2009 | US20090108934 Differential amplifier system |
| 04/30/2009 | US20090108933 Compensation For Amplifiers Driving A Capacitive Load |
| 04/30/2009 | US20090108932 Signal generating apparatus and class-d amplifying apparatus |
| 04/30/2009 | US20090108930 High power commutating multiple output amplifier system |
| 04/30/2009 | US20090108929 Apparatuses and methods for providing offset compensation for operational amplifier |
| 04/30/2009 | US20090108882 Low power low voltage differential signaling (lvds) output drivers |
| 04/30/2009 | US20090108881 Latch-Based Sense Amplifier |
| 04/30/2009 | US20090108880 Systems, Circuits and Methods for Extended Range Input Comparison |
| 04/30/2009 | DE102008051633A1 Kompensation für einen eine kapazitive Last treibenden Verstärker Compensation for a capacitive load driving amplifier |
| 04/30/2009 | CA2636481A1 Am transmitter and modulation method using same |
| 04/29/2009 | EP2053875A2 Speaker system and method of operating the speaker system |
| 04/29/2009 | EP2052537A1 Booster circuit |
| 04/29/2009 | EP2051626A2 Apparatus and method for obtaining eeg data |
| 04/29/2009 | EP1678819B1 Method and apparatus for realizing a low noise amplifier |
| 04/29/2009 | EP1456944B1 Synchronized controlled oscillation modulator |
| 04/29/2009 | CN201230300Y Last stage four path amplifier for CDMA base station system power amplifier |
| 04/29/2009 | CN101421917A Low power output stage |
| 04/29/2009 | CN101420208A Variable gain amplifier including series-coupled cascode amplifiers |
| 04/29/2009 | CN101420207A Operational amplifier, integrated circuit and method for dynamic current compensation |
| 04/29/2009 | CN101420206A Operation amplifier |
| 04/29/2009 | CN101420205A Power amplifier for digital audio |
| 04/29/2009 | CN101420204A Low noise amplifier circuit |
| 04/29/2009 | CN101420203A Low-noise amplifier circuit |
| 04/29/2009 | CN100483949C Method and apparatus for generating a pulse width modulated signal |
| 04/29/2009 | CN100483938C Circuit having source follower and semiconductor device having the circuit |
| 04/29/2009 | CN100483937C Amplifier circuit and display device |
| 04/29/2009 | CN100483936C Differential amplifier circuit and method for controlling differential amplifier circuit |
| 04/29/2009 | CN100483935C Differential amplifying circuit |
| 04/29/2009 | CN100483934C Polyphase impedance transformation amplifier |
| 04/29/2009 | CN100483933C Field emission RF amplifier |
| 04/29/2009 | CN100483932C Systems and methods for protection of audio amplifier circuits |
| 04/29/2009 | CN100483931C Heat protective system of amplifier output stage |
| 04/29/2009 | CN100483930C Load-invariant amplifier |
| 04/29/2009 | CN100483929C Amplifier, information communication apparatus and amplification method |
| 04/29/2009 | CN100483928C Amplifier having switchable negative feedback |
| 04/29/2009 | CN100483927C Comparator |
| 04/29/2009 | CN100483926C Differential amplifier device, 2-stage amplifier device, and analog/digital converter device |
| 04/29/2009 | CN100483922C Efficient modulation of RF signals |
| 04/29/2009 | CN100483915C Integrated circuit driver with stable bootstrap power supply |
| 04/29/2009 | CN100483502C Display control circuit |
| 04/29/2009 | CN100483190C Audio signal processing circuit and a display device incorporating the same |
| 04/28/2009 | US7526259 Radio frequency circuit and communication system with power amplifier control |
| 04/28/2009 | US7526006 Laser power control circuit |
| 04/28/2009 | US7525396 System, microwave switch and method for hot standby of radio frequency power amplifier |
| 04/28/2009 | US7525391 Linear transimpedance amplifier with multiplexed gain stage |
| 04/28/2009 | US7525390 Circuit for converting a differential signal into a non-differential signal, and RF transmitter comprising such a circuit |
| 04/28/2009 | US7525388 Bias circuits and signal amplifier circuits |
| 04/28/2009 | US7525387 Amplifier circuit |
| 04/28/2009 | US7525386 Active circuit having improved linearity using multiple gated transistor |
| 04/28/2009 | US7525385 Common drain driven cascode enhancement mode traveling wave amplifier |