| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 09/27/2007 | US20070222517 Amplifier |
| 09/27/2007 | US20070222516 Differential amplifier and methods for use therewith |
| 09/27/2007 | US20070222515 Variable gain amplifier and communication apparatus |
| 09/27/2007 | US20070222514 Differential difference amplifier |
| 09/27/2007 | US20070222507 Low distortion class-D amplifier |
| 09/27/2007 | DE112005002800T5 Halbleiterbauelement und Leistungsverstärker Semiconductor device and power amplifier |
| 09/27/2007 | DE10335067B4 Operationsverstärker Operational amplifier |
| 09/27/2007 | DE10304861B4 Schaltungsanordnung mit einem Wanderwellenverstärker Circuit arrangement having a traveling wave amplifier |
| 09/26/2007 | EP1837989A1 Variable gain amplifier |
| 09/26/2007 | EP1836767A1 Circuits and methods for minimizing chopping artifacts at the output of a chopper-stabilized operational amplifier |
| 09/26/2007 | EP1836766A1 Method and device for amplifying an amplitude- and phase-modulated electric signal |
| 09/26/2007 | EP1676361A4 Mmic distributed amplifier gate control using active bias |
| 09/26/2007 | EP1642387B1 Method of establishing a pwm-modulated output signal representation |
| 09/26/2007 | EP1384324B1 A cmos circuit with constant output swing and variable time delay for a voltage controlled oscillator |
| 09/26/2007 | CN101044675A Control circuit for controlling a current and/or voltage of an electronic circuit |
| 09/26/2007 | CN101043207A Differential amplifier, digital-to-analog converter and display device |
| 09/26/2007 | CN101043206A Common mode feedback circuit for switching capacitor system |
| 09/26/2007 | CN101043205A Low distortion class-d amplifier |
| 09/26/2007 | CN101043204A Non-linear error calibration method for PWM structure in full digital D class power amplifier |
| 09/26/2007 | CN101043203A Variable gain amplifier |
| 09/26/2007 | CN101043202A High-frequency power amplifier |
| 09/26/2007 | CN101043201A 半导体集成电路 The semiconductor integrated circuit |
| 09/25/2007 | US7274923 Wireless communication system |
| 09/25/2007 | US7274915 Low-noise transmitter system and method |
| 09/25/2007 | US7274753 Method of implementing modulation and modulator |
| 09/25/2007 | US7274749 Method and apparatus for the linearization of a radio frequency high-power amplifier |
| 09/25/2007 | US7274259 Layout structure of signal driver |
| 09/25/2007 | US7274256 Input amplifier stage in the AB class having a controlled bias current |
| 09/25/2007 | US7274252 Power amplification circuit and operational amplifier incorporating said circuit |
| 09/25/2007 | US7274220 Method and apparatus for amplifying a regulated differential signal to a higher voltage |
| 09/25/2007 | US7274206 Output power detection circuit |
| 09/20/2007 | WO2007106645A2 Elimination of dummy detector on optical detectors using input common mode feedback |
| 09/20/2007 | WO2007105282A1 Variable gain amplifier |
| 09/20/2007 | WO2006000088A3 Transmit signal generator and method |
| 09/20/2007 | US20070216491 Self-Oscillating Power Circuit |
| 09/20/2007 | US20070216485 Linear variable gain traveling wave amplifier |
| 09/20/2007 | US20070216484 DC current regulator insensitive to conducted EMI |
| 09/20/2007 | US20070216483 Differential amplifier stage |
| 09/20/2007 | US20070216482 High linearity and low noise amplifier with continuously variable gain control |
| 09/20/2007 | US20070216481 Low noise amplifiers for low-power impulse radio ultra-wideband receivers |
| 09/20/2007 | US20070216478 Systems and Methods for Maintaining Minimum Pulse Width During Shutdown |
| 09/20/2007 | US20070216477 Baseband noise reduction |
| 09/20/2007 | DE10304873B4 Schaltungsanordnung mit einem Wanderwellenverstärker Circuit arrangement having a traveling wave amplifier |
| 09/20/2007 | DE102006012601A1 Alternating current signal amplifying circuit for controlling loudspeakers, has two clock amplifier circuits, which respectively exhibit NPN-transistors and inductors, where inductors are coupled with each other |
| 09/19/2007 | EP1835684A2 Transmitter and method with digital control of a Cartesian feedback loop |
| 09/19/2007 | EP1835619A1 Electronic signal generator with modulated duty factor, compensated by variations of its input voltage |
| 09/19/2007 | EP1835373A1 Generation of a reference voltage |
| 09/19/2007 | CN200950575Y 4W multi-carrier power amplifier in TD-SCDMA system base station |
| 09/19/2007 | CN101040441A Sample hold circuit, and pipeline ad converter using the circuit |
| 09/19/2007 | CN101040435A Amplitude variable driver circuit and testing apparatus |
| 09/19/2007 | CN101040434A Audio amplifier and speaker incorporating audio amplifier |
| 09/19/2007 | CN101039105A Power amplifier and method for amplifying the power |
| 09/19/2007 | CN101039104A Power amplifier based on high voltage great current operation amplifier |
| 09/19/2007 | CN101039103A High-efficiency power modulators |
| 09/18/2007 | US7272187 Filter circuit and radio apparatus |
| 09/18/2007 | US7271792 Display control circuit |
| 09/18/2007 | US7271662 High frequency power amplifier circuit and electric component for high frequency power amplifier |
| 09/18/2007 | US7271661 Operation amplifier circuit having digital driving circuitry and analog driving circuitry |
| 09/18/2007 | US7271659 High speed amplifier incorporating pre-emphasis |
| 09/18/2007 | US7271658 Electric component for high frequency power amplifier |
| 09/18/2007 | US7271657 Traveling wave amplifier |
| 09/18/2007 | US7271655 Power amplifier end stage |
| 09/18/2007 | US7271654 Low voltage CMOS differential amplifier |
| 09/18/2007 | US7271653 Amplifier with a voltage-controlled quiescent current and output current |
| 09/18/2007 | US7271652 Differential amplifier and operational amplifier |
| 09/18/2007 | US7271651 High performance differential amplifiers with thick oxide devices for high impedance nodes |
| 09/18/2007 | US7271650 PWM digital amplifier with high-order loop filter |
| 09/18/2007 | US7271630 Push-pull buffer amplifier and source driver |
| 09/18/2007 | US7271381 Device to detect individual moving objects having very small dimensions |
| 09/18/2007 | US7270005 Transducer-based sensor system |
| 09/13/2007 | WO2007104055A2 High efficiency load insensitive power amplifier |
| 09/13/2007 | WO2007102863A1 Ping-pong auto-zero amplifier with glitch reduction |
| 09/13/2007 | WO2007102236A1 Optical transmission circuit |
| 09/13/2007 | WO2007102189A1 Light receiver |
| 09/13/2007 | WO2007102132A1 Amplification stage |
| 09/13/2007 | US20070213027 Integrated low noise amplifier |
| 09/13/2007 | US20070212081 Optical signal receiving circuit and optical signal receiving apparatus |
| 09/13/2007 | US20070210872 Elimination of dummy detector on optical detectors using input common mode feedback |
| 09/13/2007 | US20070210870 Transconductance stage providing gain control |
| 09/13/2007 | US20070210869 Differential amplifying circuit |
| 09/13/2007 | US20070210868 Differential output circuit with reduced differential output variation |
| 09/13/2007 | US20070210867 Class-e radio frequency power amplifier with feedback control |
| 09/13/2007 | US20070210866 Rf power module |
| 09/13/2007 | US20070210865 Method and apparatus for recharging portable electronic devices from audio sources |
| 09/13/2007 | US20070210862 Class-e radio frequency amplifier for use with an implantable medical device |
| 09/13/2007 | US20070210861 Class D audio amplifier with PWM and feedback |
| 09/13/2007 | US20070210859 Apparatus for and method of biasing a transistor |
| 09/13/2007 | US20070210771 High efficiency variable voltage supply |
| 09/13/2007 | DE202007005822U1 Eingangswahl in Röhrenverstärkern Input selection in tube amplifiers |
| 09/13/2007 | DE10208483B4 Puls-Echo-Gerät mit Verstärkereinrichtung mit wählbarer aktiver oder passiver Betriebsweise Pulse-echo device with amplifier device with selectable active or passive mode |
| 09/13/2007 | DE102006004012B3 Zeitkontinuierlicher Delta-Sigma-Analog-Digital-Wandler mit Operationsverstärkern A continuous-time delta-sigma analog-to-digital converter using operational amplifiers |
| 09/13/2007 | DE102005030049B4 Treiberschaltung für eine Telefonleitung A drive circuit for a telephone line |
| 09/12/2007 | EP1833162A1 Low noise amplifiers for low-power impulse radio ultra-wideband receivers |
| 09/12/2007 | EP1833161A1 Adaptive linear amplifier |
| 09/12/2007 | EP1831993A2 High efficiency switch-mode power amplifier |
| 09/12/2007 | EP1831990A1 Load mismatch adaptation in coupler-based amplifiers |
| 09/12/2007 | EP1632073B1 Method and system for producing a two-level pulse width modulated signal |
| 09/12/2007 | EP1427100B1 Preamplification circuit |
| 09/12/2007 | CN101036292A Apparatus and method for direct quadrature power amplifier modulation |
| 09/12/2007 | CN101036291A 接收电路及光接收电路 Receiving circuit and the light receiving circuit |