| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 04/22/2004 | WO2004034570A1 Envelope elimination and restoration amplifier and method thereof |
| 04/22/2004 | WO2004004307A3 Even order distortion elimination in push-pull or differential amplifiers and circuits |
| 04/22/2004 | WO2002039581A3 High speed output buffers using voltage followers |
| 04/22/2004 | WO1998026501A8 Class d amplifier |
| 04/22/2004 | WO1991005404A3 Current mirror |
| 04/22/2004 | US20040078771 Layout technique for matched resistors on an integrated circuit substrate |
| 04/22/2004 | US20040077961 Voltage sensing system with input impedance balancing for electrocardiogram (ECG) sensing applications |
| 04/22/2004 | US20040075515 Semiconductor device, and method and apparatus for manufacturing semiconductor device |
| 04/22/2004 | US20040075503 Power amplifier and communication apparatus |
| 04/22/2004 | US20040075502 Frequency compensation of common-mode feedback loops for differential amplifiers |
| 04/22/2004 | US20040075501 High frequency power amplification electric part and wireless communication system |
| 04/22/2004 | US20040075500 Buffer circuit and driver IC |
| 04/22/2004 | US20040075499 PF power detector |
| 04/22/2004 | US20040075494 Power amplification circuit and method for supplying power at a plurality of desired power output levels |
| 04/22/2004 | US20040075489 Current mirror circuit |
| 04/22/2004 | US20040075484 Current pulse receiving circuit |
| 04/21/2004 | EP1411632A2 High frequency power amplifier and wireless communication system |
| 04/21/2004 | EP1410499A1 Improved linear power amplifier |
| 04/21/2004 | EP1410495A1 System for controlling a class d amplifier |
| 04/21/2004 | EP1410494A2 System and method for current-mode amplitude modulation |
| 04/21/2004 | EP1410126A2 Differential current source with active common mode reduction |
| 04/21/2004 | EP1410099A1 Method and apparatus for uniform brightness in displays |
| 04/21/2004 | EP1191707B1 Power amplifier sharing in a wireless communication system with transmit diversity |
| 04/21/2004 | CN1491066A Heat conduction of audio frequency device |
| 04/21/2004 | CN1490931A Amplifier circuit device with output voltage changed dueto input voltage quickly and accurately |
| 04/21/2004 | CN1490883A Thin-film semiconductor device and producing method thereof |
| 04/20/2004 | US6725030 CMOS radio frequency amplifier with inverter driver |
| 04/20/2004 | US6724897 Amplifier with alternate output level |
| 04/20/2004 | US6724263 High-frequency power amplifier |
| 04/20/2004 | US6724261 Active radio frequency cavity amplifier |
| 04/20/2004 | US6724260 Low power current feedback amplifier |
| 04/20/2004 | US6724259 Variable gain amplifier |
| 04/20/2004 | US6724258 Highly-linear, wide-input-range, wide control-range, low-voltage differential voltage controlled transconductor |
| 04/20/2004 | US6724256 Receiver with delay insensitive to input amplitude and slew rate |
| 04/20/2004 | US6724255 Class E/F switching power amplifiers |
| 04/20/2004 | US6724252 Switched gain amplifier circuit |
| 04/20/2004 | US6724250 Transformer of power-amplifier module for an audio device |
| 04/20/2004 | US6724249 Multi-level class-D amplifier by means of 3 physical levels |
| 04/20/2004 | US6724248 DC offset self-calibration system for a digital switching amplifier |
| 04/20/2004 | US6724235 BiCMOS variable-gain transconductance amplifier |
| 04/20/2004 | US6724217 CMOS output amplifier independent of temperature, supply voltage and manufacturing quality of transistors |
| 04/20/2004 | US6724020 Semiconductor device and power amplifier using the same |
| 04/20/2004 | US6724014 High-voltage hybrid circuit |
| 04/15/2004 | WO2004032490A1 Automatically setting an operative state of a wideband amplifier |
| 04/15/2004 | WO2004032324A1 Transistor circuit |
| 04/15/2004 | WO2004032319A1 Differential amplifier with temperature compensating function |
| 04/15/2004 | WO2003073603A3 Current modulator with dynamic amplifier impedance compensation |
| 04/15/2004 | WO2002097973A3 Duty cycle integrator with tracking common mode feedback control |
| 04/15/2004 | US20040072597 Power amplifier control |
| 04/15/2004 | US20040071225 Wireless communication apparatus |
| 04/15/2004 | US20040070456 Method of forming an audio amplifier voltage reference and structure therefor |
| 04/15/2004 | US20040070455 Wideband, variable-bandwidth distributed amplifier |
| 04/15/2004 | US20040070454 Continuous bias circuit and method for an amplifier |
| 04/15/2004 | US20040070453 Absolute power detector |
| 04/15/2004 | US20040070451 Selectable single mode or diferential mode operation in a single amplifier |
| 04/15/2004 | US20040070449 Amplifier linearisation |
| 04/15/2004 | US20040070447 Fet band amplifier |
| 04/15/2004 | US20040070446 Low noise, electric field sensor |
| 04/15/2004 | US20040070445 Reduced output topology for multi-reference switching amplifiers |
| 04/15/2004 | US20040070435 Duty ratio detecting apparatus with small return time |
| 04/15/2004 | US20040070428 Circuit for generating a linear current control signal and method thereof |
| 04/15/2004 | DE10296406T5 Automatische Verstärkerregelungsschaltung mit hoher Linearität und monoton-korrelierer Versatzspannung Automatic gain control circuit with high linearity and monotonically-correlator offset voltage |
| 04/15/2004 | DE10118134B4 Differenzverstärkerschaltung Differential amplifier circuit |
| 04/14/2004 | EP1407586A1 Line driver for digital signal transmission |
| 04/14/2004 | EP1407543A2 Power-controlled transmitter arrangement |
| 04/14/2004 | EP1407542A2 A communication system and arrangements comprising such a communication system |
| 04/14/2004 | EP1407541A2 Low-noise amplifying circuit |
| 04/14/2004 | EP1147601B1 Level shift circuit |
| 04/14/2004 | EP0760179B1 Impedance circuit for a miniature hearing aid |
| 04/14/2004 | CN2612153Y Combined feedback power amplifier |
| 04/14/2004 | CN1489826A High-frequency amplifier with dependent control of quiescent current and bias impedance |
| 04/14/2004 | CN1489326A Temperature controller in optical communication apparatus and control method thereof |
| 04/14/2004 | CN1489212A 半导体集成电路 The semiconductor integrated circuit |
| 04/13/2004 | US6720832 System and method for converting from single-ended to differential signals |
| 04/13/2004 | US6720831 Power amplifier protection circuit |
| 04/13/2004 | US6720830 Low-power, differential optical receiver in silicon on insulator |
| 04/13/2004 | US6720827 Differential transimpedance amplifier for optical communication |
| 04/13/2004 | US6720826 Transimpedance amplifier |
| 04/13/2004 | US6720825 Method and circuit for reduction of audible turn-on and turn-off transients in switching amplifiers |
| 04/13/2004 | US6720805 Output load resistor biased LVDS output driver |
| 04/13/2004 | US6718816 Monolithic I.C. implemented calibration circuit |
| 04/08/2004 | WO2004030246A1 A transmitter and a method of calibrating power in signals output from a transmitter |
| 04/08/2004 | WO2004030231A1 Method for optimizing an operating point of a power amplifier in a wcdma mobile terminal |
| 04/08/2004 | WO2004030223A2 Full bridge integral noise shaping for quantization of pulse width modulation signals |
| 04/08/2004 | WO2004030214A1 Analog load driver |
| 04/08/2004 | WO2004030212A1 Circuit for driving gate of power mosfet |
| 04/08/2004 | WO2004030207A2 Variable gain amplifier |
| 04/08/2004 | WO2003077414A3 Power amplifier |
| 04/08/2004 | WO2003063198A3 A voltage limiting semiconductor pass gate circuit |
| 04/08/2004 | WO2003056698A3 Power amplifier |
| 04/08/2004 | WO2003044932A3 Switched mode power amplifier |
| 04/08/2004 | WO2002082642A3 Dynamic biasing of a transmitter |
| 04/08/2004 | US20040066320 Multi-stage pipeline type analog-to-digital conversion circuit for adjusting input signals |
| 04/08/2004 | US20040066242 High noise rejection voltage-controlled ring oscillator architecture |
| 04/08/2004 | US20040066237 Amplifier circuit for AM broadcasting |
| 04/08/2004 | US20040066236 Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier |
| 04/08/2004 | US20040066233 Fet band amplifier |
| 04/08/2004 | US20040066231 Amplifying circuit for transmitter capable of reducing noise |
| 04/08/2004 | US20040066230 Low noise amplifier with fixed loss bypass |
| 04/08/2004 | US20040066229 Class D amplifier |