| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/21/2003 | US6509793 Switching amplifier resolution enhancement apparatus and methods |
| 01/21/2003 | US6509781 Circuit and method for controlling a dynamic, bi-directional high voltage analog switch |
| 01/21/2003 | US6509777 Method and apparatus for reducing DC offset |
| 01/21/2003 | US6509722 Dynamic input stage biasing for low quiescent current amplifiers |
| 01/21/2003 | US6509641 High-frequency signal amplification device |
| 01/21/2003 | CA2237633C Digital signal processing for linearization of small input signals to a tri-state power switch |
| 01/16/2003 | WO2003005586A1 A method and an arrangement relating to telecommunications systems |
| 01/16/2003 | WO2003005575A2 Power-controlled transmitter arrangement |
| 01/16/2003 | WO2003005574A2 A communication system and arrangements comprising such a communication system |
| 01/16/2003 | WO2003005572A1 Method and device for switch-on current limiting in push-pull amplifying power stages |
| 01/16/2003 | WO2003005571A1 Audio amplifier |
| 01/16/2003 | WO2003005570A1 Audio reproducing device and method, audio amplifier, and integrated circuit for audio amplifier |
| 01/16/2003 | WO2003005569A1 Auxiliary circuitry for monolithic microwave integrated circuit |
| 01/16/2003 | WO2003005568A1 Radio frequency power amplifier for cellular telephones |
| 01/16/2003 | WO2003005566A2 Low-noise amplifying circuit |
| 01/16/2003 | WO2003005561A2 Interface circuit for connecting to an output of a frequency converter |
| 01/16/2003 | WO2001099274A9 Audio amplifier power and temperature controller having network detecting and associated methods |
| 01/16/2003 | US20030013419 Differential to single-ended converter with large output swing |
| 01/16/2003 | US20030013416 Radio architecture |
| 01/16/2003 | US20030011880 Automatic gain control device of optical fiber amplifier |
| 01/16/2003 | US20030011873 Light amplifier device and optical pickup device employing it |
| 01/16/2003 | US20030011436 Fujitsu limited |
| 01/16/2003 | US20030011435 High-frequency semiconductor device |
| 01/16/2003 | US20030011434 Radio frequency power amplifier for cellular telephones |
| 01/16/2003 | US20030011433 Ultra wideband transmitter with gated push-pull RF amplifier |
| 01/16/2003 | US20030011432 CMOS low voltage high-speed differential amplifier |
| 01/16/2003 | US20030011431 Linear transconductance amplifier |
| 01/16/2003 | US20030011430 Differential difference amplifier for amplifying small signals close to zero volts |
| 01/16/2003 | US20030011429 Operational transconductance amplifier and filter circuit |
| 01/16/2003 | US20030011426 Multi-level receiver circuit with digital output using a variable offset comparator |
| 01/16/2003 | US20030011406 Data receivers for reproducing data input signals and methods for detecting data signals in data input receivers |
| 01/16/2003 | US20030011351 Internal power supply for an integrated circuit having a temperature compensated reference voltage generator |
| 01/15/2003 | EP1276230A2 Cascode distributed amplifier |
| 01/15/2003 | EP1276229A1 Voltage follower and relative method of regulation |
| 01/15/2003 | EP1276228A2 Method and apparatus for signal stabilization |
| 01/15/2003 | EP1276226A1 Substantially frequency-independent negative conductance generator |
| 01/15/2003 | EP1275205A2 Dual-mode communications transmitter |
| 01/15/2003 | EP1275202A1 Antenna amplifier |
| 01/15/2003 | EP1275200A2 Method and apparatus for dynamic sound optimization |
| 01/15/2003 | EP1275199A2 High-gain, very wide common mode range, self biased operational amplifier |
| 01/15/2003 | EP1275198A2 Concurrent multi-band low noise amplifier architecture |
| 01/15/2003 | EP1181770B1 Broadcast transmission system with distributed correction |
| 01/15/2003 | EP0853839B1 Electronic circuit comprising complementary transconductors for filters and oscillators |
| 01/15/2003 | CN1391740A Method and apparatus for generating RF signal |
| 01/15/2003 | CN1391724A Power amplifier core |
| 01/15/2003 | CN1391359A High linear balanced amplifier with asymmetric biassed voltages |
| 01/15/2003 | CN1391358A Predistortion circuit for Doherty linear microwave amplifier |
| 01/15/2003 | CN1391354A Efficient high-frequency amplifier and radio transmitter |
| 01/14/2003 | US6507731 Wireless communication apparatus with transmission power controller and method thereof |
| 01/14/2003 | US6507651 Hybrid amplifier |
| 01/14/2003 | US6507519 Buffer circuit |
| 01/14/2003 | US6507246 FET circuit with resistor-programmable transconductance |
| 01/14/2003 | US6507245 Amplifier that is driven in a complementary manner |
| 01/14/2003 | US6507244 Transmitter with a sliding compression point |
| 01/14/2003 | US6507243 Controller-based radio frequency amplifier module and method |
| 01/14/2003 | US6507241 Method and circuit for automatically correcting offset voltage |
| 01/14/2003 | US6507240 Hybrid audio amplifier |
| 01/14/2003 | US6507239 Low noise and low offset bipolar input amplifiers |
| 01/14/2003 | US6507223 Differential line driver having adjustable common mode operation |
| 01/10/2003 | CA2386851A1 Logarithmic amplifier |
| 01/09/2003 | WO2003003569A1 Balanced distortion reduction circuit |
| 01/09/2003 | WO2003003568A2 Active auto zero circuit for programmable time continuous open loop amplifiers |
| 01/09/2003 | WO2003003567A1 Fm antenna amplifier |
| 01/09/2003 | WO2003003566A1 Am transmitter having feed-forward correction to compensate for source impedance |
| 01/09/2003 | WO2003003378A1 Eeprom circuit voltage reference circuit and method for providing a low temperature-coefficient voltage reference |
| 01/09/2003 | WO2002015386A3 High-efficiency audio power amplifier |
| 01/09/2003 | WO2001067591A9 Digital-to-analog interface circuit having adjustable time response |
| 01/09/2003 | US20030007271 Amplifier with a strong output current |
| 01/09/2003 | US20030006920 Comparator with offset canceling function and D/A conversion apparatus with offset canceling function |
| 01/09/2003 | US20030006846 Broad-band biasing system for biasing an electronic circuit and an amplifier incorporating the system |
| 01/09/2003 | US20030006844 Low input impedance with amplifier |
| 01/09/2003 | US20030006842 Split cascode driver |
| 01/09/2003 | US20030006841 Multiple input fully differential amplifier |
| 01/09/2003 | US20030006840 Reduction of sensitivity of an amplifier to an offset voltage |
| 01/09/2003 | US20030006838 Multi-channel digital amplifier for shifting phases of PWM signals |
| 01/09/2003 | US20030006837 Modulation scheme for filterless switching amplifiers with reduced EMI |
| 01/09/2003 | US20030006834 Transconductor and filter circuit |
| 01/09/2003 | US20030006827 Current control circuit |
| 01/09/2003 | US20030006746 Reference voltage generator |
| 01/09/2003 | US20030006365 Amplifier circuit for optical disk drive |
| 01/09/2003 | US20030006359 Method and apparatus for stabilizing a signal |
| 01/08/2003 | EP1274166A1 Amplifier with reduced sensivity to offset voltages |
| 01/08/2003 | EP1273100A1 Balanced circuit arrangement |
| 01/08/2003 | EP1273041A2 Combined transistor-capacitor structure in deep sub-micron cmos for power amplifiers |
| 01/08/2003 | EP1153476B1 A circuit for compensating noise and errors from an output stage of a digital amplifier |
| 01/08/2003 | EP1118215B1 Apparatus for providing television receiver alignment functions |
| 01/08/2003 | EP0888670B1 Linear high-frequency amplifier with high input impedance and high power efficiency |
| 01/08/2003 | CN1390384A Improved floating, balanced output circuit |
| 01/08/2003 | CN1389980A 可变增益放大器 Variable gain amplifier |
| 01/08/2003 | CN1389847A Operational amplifying circuit, driving circuit and driving method |
| 01/08/2003 | CN1389842A Operational amplifying circuit, driving circuit and driving method |
| 01/08/2003 | CN1098566C Mobile communication transmitter capable of selectively activating amplifiers |
| 01/08/2003 | CN1098560C Circuit arrangement comprising a lograrithmic transfer function |
| 01/07/2003 | US6504937 Amplifier circuit for electret microphone with enhanced performance |
| 01/07/2003 | US6504736 Current-voltage converter |
| 01/07/2003 | US6504435 Feedback clamp circuit to prevent overcharge in compensation capacitor |
| 01/07/2003 | US6504433 CMOS transceiver having an integrated power amplifier |
| 01/07/2003 | US6504432 Tunable, dynamic, and self-biasing differential amplifier and application thereof |
| 01/07/2003 | US6504431 CMOS transceiver having an integrated power amplifier |
| 01/07/2003 | US6504430 Feedforward type linearizer |