| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 09/25/2008 | US20080231368 Wireless frequency power amplifier, semiconductor device, and wireless frequency power amplification method |
| 09/25/2008 | US20080231367 Amplifier |
| 09/25/2008 | US20080231366 Method and System for a Low Noise Amplifier with Tolerance to Large Inputs |
| 09/25/2008 | US20080231365 Operational amplifier |
| 09/25/2008 | US20080231364 Amplifying circuit having a pull-up circuit and a pull-down circuit for increasing slew rate |
| 09/25/2008 | US20080231363 Temperature compensation of small signal gain of an amplifier stage |
| 09/25/2008 | US20080231362 Linear transconductor for rf communications |
| 09/25/2008 | US20080231361 Molecular transistor circuits compatible with carbon nanotube sensors and transducers |
| 09/25/2008 | US20080231360 Arrangement of signal line pairs and amplifiers |
| 09/25/2008 | US20080231359 Power divider/combiner and power dividing/combining method using the same |
| 09/25/2008 | US20080231358 Power amplifier circuit |
| 09/25/2008 | US20080230683 Light receiving circuit |
| 09/25/2008 | US20080230682 Method for manufacturing a semiconductor device |
| 09/25/2008 | DE102008011629A1 Verstärker Amplifier |
| 09/25/2008 | DE102008005215A1 Switching arrangement for reducing offset voltage of main operational amplifier, has main operation amplifier with inverting inlet, non inverting inlet and control inlet for reduction of offset voltage |
| 09/25/2008 | DE102008005091A1 Verstärker, Senderanordnung mit einem Verstärker, und Verfahren zum Verstärken eines Signals Amplifiers, transmitter arrangement to an amplifier and method of amplifying a signal |
| 09/24/2008 | EP1973227A2 Power divider/combiner and power dividing/combining method using the same |
| 09/24/2008 | EP1973226A1 Audio power amplifier and signal processing method |
| 09/24/2008 | EP1972055A2 Digital pwm amplifier with simulation-based feedback |
| 09/24/2008 | CN201122950Y Buffer amplifier |
| 09/24/2008 | CN201122936Y Digital charge amplifier |
| 09/24/2008 | CN201122935Y Sound playback system |
| 09/24/2008 | CN201122934Y High power field effect pipe power amplifier module |
| 09/24/2008 | CN101273530A Methods and apparatus for implementing and/or using amplifiers and/or for performing various amplification related operations |
| 09/24/2008 | CN101272130A High-tension resistant power amplifier circuit and its use method |
| 09/24/2008 | CN100421352C 高频功率放大器模块 High-frequency power amplifier module |
| 09/23/2008 | US7428230 Time-division-duplexing type power amplification module |
| 09/23/2008 | US7427898 Detecting amplifier out-of-range conditions |
| 09/23/2008 | US7427895 Doherty amplifier with improved linearity |
| 09/23/2008 | US7427893 Circuit and method for controlling the power mode a class-D amplifier |
| 09/23/2008 | US7427738 Light-receiving amplifier and optical pickup device |
| 09/18/2008 | WO2008112789A2 Active circuits with isolation switches |
| 09/18/2008 | WO2008112611A1 Frequency selective amplifier with wide-band impedance and noise matching |
| 09/18/2008 | WO2008112041A2 Power supply providing ultrafast modulation of output voltage |
| 09/18/2008 | WO2008111883A1 Flexible dynamic range amplifier |
| 09/18/2008 | WO2008110987A2 A data processing system for clipping correction |
| 09/18/2008 | WO2008015449A3 Apparatus and method for obtaining eeg data |
| 09/18/2008 | US20080225916 Excessive current input suppressing semiconductor laser light emitting circuit |
| 09/18/2008 | US20080224781 Variable gain amplifiers |
| 09/18/2008 | US20080224780 Transconductance control circuit, method of controlling transconductance, and a power amplifier |
| 09/18/2008 | US20080224778 Transmission line amplifier |
| 09/18/2008 | US20080224777 Rail-to-rail amplifier circuit and semiconductor device |
| 09/18/2008 | US20080224775 Variable Gain Amplifier |
| 09/18/2008 | US20080224774 Method and Apparatus for Systematic and Random Variation and Mismatch Compensation for Multilevel Flash Memory Operation |
| 09/18/2008 | US20080224773 Digital input class-D amplifier |
| 09/18/2008 | US20080224772 Operational Amplifier Selecting One of Inputs, and an Amplifying Apparatus Using the Op Amplifier the Verification Method |
| 09/18/2008 | US20080224771 Compensation for Parasitic Coupling Between Rf or Microwave Transistors in the Same Package |
| 09/18/2008 | US20080224769 Power supply providing ultrafast modulation of output voltage |
| 09/18/2008 | US20080224768 Operational Amplifier Capable of Compensating Offset Voltage |
| 09/18/2008 | US20080224632 Constant current circuit and light emitting diode drive circuit |
| 09/17/2008 | EP1971094A1 Light receiver |
| 09/17/2008 | EP1971025A1 Digital input class-D amplifier |
| 09/17/2008 | EP1971023A1 Suppression of high-frequency perturbations in pulse-width modulation |
| 09/17/2008 | EP1969719A2 System and method for providing distributed gain |
| 09/17/2008 | EP1969716A1 Mixer circuit and rf transmitter using such mixer circuit |
| 09/17/2008 | EP1969715A2 Dc offset correction for high gain complex filter |
| 09/17/2008 | EP1254512B1 Amplifier or filter circuit in switched capacitor circuit logic and method for amplifying or filtering signals |
| 09/17/2008 | CN201118963Y Multi-sound channel electronic tube amplifier power circuit |
| 09/17/2008 | CN201118787Y Silence circuit |
| 09/17/2008 | CN201118525Y Differential transmission circuit for remote sensing CCD camera dual-calculation amplifier analog signal |
| 09/17/2008 | CN201118524Y Micro-wave low band ultra-micro frequency selection amplification module |
| 09/17/2008 | CN101267705A Constant current circuit and light emitting diode drive circuit |
| 09/17/2008 | CN101267193A Semiconductor integrated circuit performing a voltage comparison and preventing deterioration of voltage comparison accuracy |
| 09/17/2008 | CN101267188A Digital input class-D amplifier |
| 09/17/2008 | CN101266744A Electro-optical device, driving circuit, and electronic apparatus |
| 09/17/2008 | CN100420284C Power intensifier system for cofrequency transmitting of digital television |
| 09/17/2008 | CN100420150C Offset calibration system and method for a high gain signal channel |
| 09/17/2008 | CN100419440C Low-loss tunable ferro-electric device and method of characterization |
| 09/16/2008 | US7425873 Radio frequency amplification apparatus |
| 09/16/2008 | US7425872 Radio frequency power amplifier |
| 09/16/2008 | US7425871 Compensation units for reducing the effects of self-heating and increasing linear performance in bipolar transistors |
| 09/16/2008 | US7425870 Current mirror circuit |
| 09/16/2008 | US7425869 Distributed circular geometry power amplifier architecture |
| 09/16/2008 | US7425867 Differential input/differential output converter circuit |
| 09/16/2008 | US7425866 Digitally adjusted variable gain amplifier (VGA) using switchable differential pairs |
| 09/16/2008 | US7425865 Differential cascode amplifier |
| 09/16/2008 | US7425864 Recovery from clipping events in a class D amplifier |
| 09/16/2008 | US7425492 Use of an internal on-chip inductor for electrostatic discharge protection of circuits which use bond wire inductance as their load |
| 09/12/2008 | WO2008109258A1 Wideband digital single-to-differential converter and method of forming same |
| 09/12/2008 | WO2008107849A1 Signal processor comprising a reference voltage circuit |
| 09/12/2008 | WO2008107210A2 Electronic circuit for the transmission of high-frequency signals |
| 09/11/2008 | US20080220738 Wireless communication system |
| 09/11/2008 | US20080218273 Tunable rf bandpass transconductance amplifier |
| 09/11/2008 | US20080218272 Wideband digital single-to-differential converter and method of forming same |
| 09/11/2008 | US20080218270 Multi-mode power amplifier with low gain variation over temperature |
| 09/11/2008 | US20080218267 Amplifier with level shifting feedback network |
| 09/11/2008 | US20080218266 Amplifier circuit with input terminals thereof connected to sampling capacitors |
| 09/11/2008 | US20080218265 Amplifier structures that enhance transient currents and signal swing |
| 09/11/2008 | US20080218264 Class d amplifier arrangement |
| 09/11/2008 | US20080218260 Multiple rf path amplifiers |
| 09/11/2008 | US20080218258 Digital isolator |
| 09/11/2008 | US20080218241 Differential output circuit with reduced differential output variation |
| 09/11/2008 | US20080217519 Photoelectric conversion device |
| 09/11/2008 | US20080217518 Electronic detecting apparatus |
| 09/11/2008 | US20080217517 Monolithic ambient light detector |
| 09/11/2008 | US20080217516 Photodetector |
| 09/11/2008 | DE102008010963A1 Pufferschaltkreis Buffer circuit |
| 09/10/2008 | EP1968188A1 Class D amplifier assembly |
| 09/10/2008 | EP1966885A2 Method and device for adjusting or setting an electronic device |
| 09/10/2008 | EP1966884A1 Efficient composite amplifier |