| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 07/13/2011 | CN102124646A High-linearity low-noise receiver with load switching |
| 07/13/2011 | CN102124645A Controlling power with an output network |
| 07/13/2011 | CN102122926A Three-phase operational amplifier |
| 07/13/2011 | CN102122925A Constant transconductance operational amplifier and method for operation |
| 07/13/2011 | CN102122924A Variable gain amplifier |
| 07/13/2011 | CN102122923A Class d amplifier |
| 07/13/2011 | CN102122922A Multimode power amplifier and corresponding mobile communication equipment |
| 07/13/2011 | CN102122921A Radio frequency low-noise amplifier |
| 07/13/2011 | CN101615892B Radiofrequency power amplifier |
| 07/13/2011 | CN101409532B Mixed output stage circuit and correlation method |
| 07/13/2011 | CN101383592B Power amplifier and method for reducing common mode noise thereof |
| 07/13/2011 | CN101325407B Amplifier |
| 07/13/2011 | CN101043202B High-frequency power amplifier |
| 07/12/2011 | US7979224 Configurable voltage regulator |
| 07/12/2011 | US7978010 Boost operational amplifier |
| 07/12/2011 | US7978009 Digital modulated RF power amplifier with impedance compensation circuit |
| 07/07/2011 | WO2011081247A1 Multi-band power amplifier |
| 07/07/2011 | WO2011079899A1 Amplifier component comprising a compensation element |
| 07/07/2011 | WO2010008586A4 Low-noise high efficiency bias generation circuits and method |
| 07/07/2011 | US20110163814 Hybrid Class Amplifier |
| 07/07/2011 | US20110163813 Amplifier circuit |
| 07/07/2011 | US20110163812 Ultra low-power cmos based bio-sensor circuit |
| 07/07/2011 | US20110163811 Fast Class AB Output Stage |
| 07/07/2011 | US20110163809 Push-pull output circuit |
| 07/07/2011 | US20110163808 Amplifier with improved input resistance and controlled common mode |
| 07/07/2011 | US20110163807 Impedance matching circuit and method thereof |
| 07/07/2011 | DE102007027047B4 Hochfrequenzleistungsverstärker High frequency power amplifier |
| 07/07/2011 | DE102005044710B4 Rückkopplungskorrektur für Schaltverstärker sowie eine Verwendung Feedback correction for amplifier and a use |
| 07/06/2011 | EP2341616A1 Capacitive load driving amplifier |
| 07/06/2011 | EP2341615A1 OP-AMP sharing with input and output reset |
| 07/06/2011 | EP2340612A1 Amplifier with gain expansion stage |
| 07/06/2011 | EP2020080B1 Circuit and method for driving bulk capacitance of amplifier input transistors |
| 07/06/2011 | CN201893757U Novel differential amplifier |
| 07/06/2011 | CN201893756U Structure for eliminating offset voltage of operational amplifier by utilizing substrate bias effect |
| 07/06/2011 | CN1976544B Capacitive load driving circuit, electrostatic transducer, ultrasonic speaker |
| 07/06/2011 | CN1652566B Correlated-double-sampling amplifier in image sensing device |
| 07/06/2011 | CN102119486A CMOS amplifier with integrated tunable band-pass function |
| 07/06/2011 | CN102119484A Power amplification device, and transmission device and communication device using same |
| 07/06/2011 | CN102119483A Techniques for improving balun loaded-Q |
| 07/06/2011 | CN102118149A Method and device for switching signals |
| 07/06/2011 | CN102118134A Novel instrument amplifier |
| 07/06/2011 | CN101666824B High-side current detection circuit |
| 07/06/2011 | CN101359898B Slew rate intensifier for dynamic CMOS operational amplifier |
| 07/06/2011 | CN101098128B Single stage balanced valve amplifier |
| 07/06/2011 | CN101064496B Semiconductor device |
| 07/05/2011 | US7974599 Low noise amplifier with constant input impedance |
| 07/05/2011 | US7973620 Power amplifier filter for radio-frequency signals |
| 07/05/2011 | US7973604 Tunable multi frequency bands filter device |
| 07/05/2011 | US7973602 Variable gain amplifier |
| 07/04/2011 | WO2011040507A1 Power amplifier, wireless communicator and power amplification method |
| 06/30/2011 | WO2011078120A1 Rf signal generation circuit and wireless transmitter |
| 06/30/2011 | WO2011078095A1 Transmission circuit |
| 06/30/2011 | WO2011077616A1 Transmitting circuit and communication apparatus |
| 06/30/2011 | WO2011077615A1 Power amplifier circuit and communication apparatus |
| 06/30/2011 | WO2011077212A1 Acoustic apparatus, acoustic system, and audio signal control method |
| 06/30/2011 | WO2011077121A1 Current measuring apparatus |
| 06/30/2011 | WO2011075778A1 Low frequency electric field sensor |
| 06/30/2011 | WO2011028614A3 System and method for amplifying a signal using multiple amplification stages sharing a common bias current |
| 06/30/2011 | US20110158435 Audio signal amplifier circuit |
| 06/30/2011 | US20110156819 Low-Noise High Efficiency Bias Generation Circuits and Method |
| 06/30/2011 | US20110156817 Power amplifier |
| 06/30/2011 | US20110156816 Biasing Circuit for Differential Amplifier |
| 06/30/2011 | US20110156813 Power amplifier |
| 06/30/2011 | US20110156812 Multi-band, multi-mode rf transmit amplifier system with separate signal paths for linear and saturated operation |
| 06/30/2011 | US20110156811 Voltage detection device |
| 06/30/2011 | DE102010055707A1 Device for calibrating variable-capacitance diode in automobile applications, has variable impedance coupled with pin of integrated circuit, and variable-capacitance diode coupled with another pin of integrated circuit |
| 06/30/2011 | DE102010013331A1 Schaltungsanordnung zur redundanten Stromversorgung eines Leistungsverstärkers Circuit arrangement for redundant power supply of a power amplifier |
| 06/30/2011 | DE102009060652A1 Data amplifier for supplying signal of angle sensor arranged at shaft of drive system to signal electronic via electrical lines, has impedance converter arranged between reference signals provided on input and output sides, respectively |
| 06/30/2011 | DE102009060504A1 Schaltung und Verfahren zur Einstellung eines Offset-Ausgangsstroms für einen Eingangsstromverstärker Circuit and method for adjusting an offset output current for an input current amplifier |
| 06/29/2011 | EP2339763A1 Current detector |
| 06/29/2011 | EP2339747A1 Bias circuit for differential amplifier |
| 06/29/2011 | EP1544996B1 Volume adjustment device, digital amplifier, and digital signal reproducing device |
| 06/29/2011 | CN201887724U Power amplifier for V/I (voltage to current conversion) source meters |
| 06/29/2011 | CN1914951B Output stage for a hearing aid, hearing aid and method of driving output tranducer of hearing aid |
| 06/29/2011 | CN102113222A Multi-mode configurable transmitter circuit |
| 06/29/2011 | CN102113208A Adaptive bias current generation for switched-capacitor circuits |
| 06/29/2011 | CN102113207A Doherty amplifier with input network optimized for MMIC |
| 06/29/2011 | CN102111115A Op-amp sharing with input and output reset |
| 06/29/2011 | CN102111114A Design method for reverse class-F power amplifier based on 3/4 spiral virtual ground structure |
| 06/29/2011 | CN102111113A Serially concatenated multi-level radio-frequency power amplifier and front-end transmitter |
| 06/29/2011 | CN102111112A Radio-frequency power amplifier and a front-end transmitter |
| 06/29/2011 | CN101594127B Full solid-sate radio frequency power supply |
| 06/29/2011 | CN101582248B Source driver of display, operational amplifier and relative method |
| 06/29/2011 | CN101174507B Low-loss adjustable ferroelectric device and its characterization method |
| 06/28/2011 | US7970154 Condenser microphone |
| 06/28/2011 | US7969429 Sustain driver, sustain control system, and display device |
| 06/28/2011 | US7969246 Systems and methods for positive and negative feedback of cascode transistors for a power amplifier |
| 06/28/2011 | US7969245 Millimeter-wave monolithic integrated circuit amplifier with opposite direction signal paths and method for amplifying millimeter-wave signals |
| 06/28/2011 | US7969244 System and method for reducing flicker noise from CMOS amplifiers |
| 06/28/2011 | US7969243 Electronic circuits including a MOSFET and a dual-gate JFET |
| 06/28/2011 | US7969241 Gain control methods and systems in an amplifier assembly |
| 06/28/2011 | US7968835 Electronic device having LED with variable brightness |
| 06/23/2011 | WO2011075211A1 Differential gm-boosting circuit and applications |
| 06/23/2011 | WO2011074873A2 Class e power amplifier |
| 06/23/2011 | WO2011072723A1 Coupler and amplifier arrangement |
| 06/23/2011 | WO2011014849A3 Bias current monitor and control mechanism for amplifiers |
| 06/23/2011 | US20110150245 Capacitive load driving amplifier |
| 06/23/2011 | US20110148953 Display apparatus and driving device for displaying |
| 06/23/2011 | US20110148529 Radio frequency amplifier with effective decoupling |
| 06/23/2011 | US20110148528 Amplification cell employing linearization method and active inductor using the same |