| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 12/30/2008 | US7470886 Light receiving circuit, semiconductor laser device, and optical pickup device |
| 12/25/2008 | US20080315993 Dual mode rf power amplifier |
| 12/25/2008 | US20080315957 Ultra-wideband low noise amplifier and amplification method thereof |
| 12/25/2008 | US20080315954 Integrated Power Amplifier |
| 12/25/2008 | US20080315952 Power amplifier system provided with improved protection function |
| 12/25/2008 | US20080315951 Class ab differential amplifier with output stage common mode feedback |
| 12/25/2008 | US20080315950 Integrated Circuit Amplifiers Having Switch Circuits Therein that Provide Reduced 1/f Noise |
| 12/25/2008 | US20080315949 Variable gain amplifier insensitive to process voltage and temperature variations |
| 12/25/2008 | US20080315948 Circuit architecture having differential processing for use in half bridges and full bridges and methods therefore |
| 12/25/2008 | US20080315946 Combiner-Less Multiple Input Single Output (MISO) Amplification with Blended Control |
| 12/25/2008 | US20080315945 Arrangement for Amplifying a Pwm Input Signal |
| 12/24/2008 | WO2008156800A1 Combiner-less multiple input single output (miso) amplification with blended control |
| 12/24/2008 | WO2008156440A1 Current sensing system and method |
| 12/24/2008 | WO2008100494A3 Differential receiver with common-gate input stage |
| 12/24/2008 | WO2008020976A3 Bias circuit for maintaining high linearity at cutback power conditions |
| 12/24/2008 | WO2007140392A3 Methods and apparatus to provide slew enhancement for low power amplifiers |
| 12/24/2008 | EP2007008A2 Circuit and method for reducing noise |
| 12/24/2008 | EP2005593A1 Digital signal converter |
| 12/24/2008 | EP2005582A1 Converter with parallel coupled differential input pairs |
| 12/24/2008 | EP2005581A1 Active splitter device and method using diplexed front end |
| 12/24/2008 | EP2005579A1 A method and apparatus for reducing frequency memory effects in rf power amplifiers |
| 12/24/2008 | EP2005578A2 High efficiency load insensitive power amplifier |
| 12/24/2008 | EP2005576A1 Amplifier and method of amplifying an input signal |
| 12/24/2008 | EP1678820A4 Power amplifier and method for split voice coil transducer or speaker |
| 12/24/2008 | EP1673857A4 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range |
| 12/24/2008 | EP1382083B1 Tunable multiplexer |
| 12/24/2008 | DE102007026912A1 Vorrichtung und Verfahren zur Stromversorgung einer induktiven Last Apparatus and method for supplying power to an inductive load |
| 12/24/2008 | DE102004011719B4 Halbleitervorrichtung Semiconductor device |
| 12/24/2008 | CN201171195Y A-genus audio power amplifier |
| 12/24/2008 | CN201171194Y Audio power-amplifying apparatus |
| 12/24/2008 | CN201170945Y Operational amplification circuit for repairing line of LCD device |
| 12/24/2008 | CN101331680A Enhanced low noise amplifier |
| 12/24/2008 | CN101330481A Predistortion model apparatus as well as apparatus, system and method for processing predistortion of signal |
| 12/24/2008 | CN101329870A Audio encoder and related electronic device |
| 12/24/2008 | CN101329587A Voltage regulator |
| 12/24/2008 | CN100446417C Differential circuit for reading out signal of integrated ISFET sensor based on two modes |
| 12/24/2008 | CN100446416C Magnetic bearing and turbo-molecular pump having it |
| 12/24/2008 | CN100446415C High accuracy low distorsin pulse power amplifying circuit |
| 12/24/2008 | CN100446414C High-frequency amplifier |
| 12/24/2008 | CN100446413C Multi-band predistorter using power series representation |
| 12/24/2008 | CN100446412C Multi-band look-up table type predistorter |
| 12/23/2008 | US7468636 Radio frequency power amplifier |
| 12/23/2008 | US7468635 Wideband digital single-to-differential converter and method of forming same |
| 12/23/2008 | US7468634 Apparatus for converting single-ended signal into differential signal |
| 12/23/2008 | US7468633 Multi-amplifier circuit |
| 12/23/2008 | US7468632 Power supply rejection for pulse width modulated amplifiers and automatic gain control |
| 12/23/2008 | US7468631 Class D amplifier |
| 12/18/2008 | WO2008153719A2 Modular charger for hearing aid |
| 12/18/2008 | WO2008152579A1 System to increase the efficiency of an amplifier and the amplifier so obtained |
| 12/18/2008 | WO2008019122A3 Startup and shutdown click noise elimination for class d amplifier |
| 12/18/2008 | WO2007124362A3 Gate leakage insensitive current mirror circuit |
| 12/18/2008 | US20080309436 Multi-input multi-output amplifier, an active inductor, a filter and a radio communication device |
| 12/18/2008 | US20080309413 Gain switching low-noise amplifier circuit |
| 12/18/2008 | US20080309412 Organic field effect transistor systems and methods |
| 12/18/2008 | US20080309411 Radio frequency signal amplifying device |
| 12/18/2008 | US20080309410 Offset fixing operational amplifier circuit |
| 12/18/2008 | US20080309409 Balanced differential cross-coupled transconductance amplifier for a multiplexor |
| 12/18/2008 | US20080309408 Symmetrical differential amplifier |
| 12/18/2008 | US20080309407 Transimpedance Amplifier |
| 12/18/2008 | US20080309406 Full-Bridge Class-D Power Amplifier |
| 12/18/2008 | US20080308715 Receiving apparatus |
| 12/18/2008 | US20080308714 Microprocessor Based Automatically Dimmable Eye Protection Device With Interruption Prevention |
| 12/18/2008 | DE102007027448A1 Verstärkerschaltung mit einem Ausgangstransistor zum Treiben einer komplexen Last Amplifier circuit having an output transistor for driving a resistive load |
| 12/18/2008 | DE102007016092A1 Sound production device e.g. music amplifier, for e.g. rock music, has switching device formed and provided to switch electrical connection of screen grid for adjusting different operations of amplifier circuit |
| 12/17/2008 | EP2002558A2 High efficiency converter providing switching amplifier bias |
| 12/17/2008 | EP2002538A2 Class l amplifier |
| 12/17/2008 | EP1673856A4 Method for aligning feed forward loops |
| 12/17/2008 | EP1527533B1 High sensitivity, high resolution detection of signals |
| 12/17/2008 | CN201167302Y Circuit for amplifying differential signal |
| 12/17/2008 | CN201167301Y Power amplifier capable of adjusting efficiency adaptively |
| 12/17/2008 | CN201167300Y Integrated digital predistortion power amplifier |
| 12/17/2008 | CN201167299Y Temperature negative feedback audio power output circuit |
| 12/17/2008 | CN101326712A Piezoelectric transducer signal processing circuit |
| 12/17/2008 | CN101326710A Common-gate common-source transconductance stage for RF downconversion mixer |
| 12/17/2008 | CN101326692A 光发送电路 Optical transmission circuit |
| 12/17/2008 | CN101325407A Amplifier |
| 12/17/2008 | CN101325405A Offset fixing operational amplifier circuit |
| 12/17/2008 | CN101325404A Frequency-hopping carrier generator |
| 12/17/2008 | CN101325403A Radio frequency signal amplifying device |
| 12/17/2008 | CN101325402A Audio power amplifier with improved low frequency performance |
| 12/17/2008 | CN101325401A Circuit for restraining start-up and closedown noise of whole difference audio power amplifier |
| 12/17/2008 | CN100444519C Synchronized controlled oscillation modulator |
| 12/16/2008 | US7466928 Optical receiver with dynamic gain and bandwidth |
| 12/16/2008 | US7466206 Amplifier circuit |
| 12/16/2008 | US7466205 Ultra-wideband low noise amplifier and amplification method thereof |
| 12/16/2008 | US7466204 Differential amplifier circuit, operational amplifier circuit, light-receiving amplifier circuit using the same, function selection circuit, and light-receiving circuit using the same |
| 12/16/2008 | US7466203 Solid state microwave power amplifier |
| 12/16/2008 | US7466202 High-speed CMOS current mirror |
| 12/16/2008 | US7466201 Class AB output stage and method for providing wide supply voltage range |
| 12/16/2008 | US7466200 Composite output stage for hard disk drive preamplifier |
| 12/16/2008 | US7466199 Low noise amplifier with low current consumption |
| 12/16/2008 | US7466198 Differential gain boosted amplifier |
| 12/11/2008 | WO2008149983A1 Optical receiver circuit |
| 12/11/2008 | WO2008149881A1 Voltage-to-current converter and filter circuit using the same |
| 12/11/2008 | WO2008149517A1 Bias circuit and semiconductor integrated circuit using the same |
| 12/11/2008 | WO2008127270A3 Imaging device with improved signal to noise performance |
| 12/11/2008 | US20080303700 Amplifier circuit, digital-to-analog conversion circuit, and display device |
| 12/11/2008 | US20080303598 Circuit and method for reducing bias noise in amplifier circuits |
| 12/11/2008 | US20080303597 Semiconductor circuit |
| 12/11/2008 | US20080303596 Amplifier circuit having an output transistor for driving a complex load |