| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 07/29/2004 | US20040145416 High linearity doherty communication amplifier with integrated output matching unit |
| 07/29/2004 | US20040145415 High linearity low noise amplifier |
| 07/29/2004 | US20040145414 Differential amplifier |
| 07/29/2004 | US20040145413 CMOS operational amplifier |
| 07/29/2004 | US20040145412 Boosting circuit |
| 07/29/2004 | US20040145410 Switchable tuneable bandpass filter with optimized frequency response |
| 07/29/2004 | US20040145403 Transistor-based interface circuitry |
| 07/29/2004 | US20040145401 Timing signal generating circuit and receiver circuit designed to speed up signal transmission |
| 07/29/2004 | US20040145392 Driver circuit |
| 07/29/2004 | US20040145034 Semiconductor device |
| 07/29/2004 | DE102004002175A1 Verstärkerschaltung Amplifier circuit |
| 07/28/2004 | EP1441439A1 Analogue amplifier with multiplexing capability |
| 07/28/2004 | EP1441438A1 An adjustable offset differential amplifier |
| 07/28/2004 | EP1441341A2 Preamplifier circuit and method for a disk drive device |
| 07/28/2004 | EP1440601A2 Transponder with a changeable circuit configuration |
| 07/28/2004 | EP1440508A1 Operational transconductance amplifier circuit |
| 07/28/2004 | EP1440507A1 A power amplifier module |
| 07/28/2004 | EP1440506A1 Rf power amplifier circuit |
| 07/28/2004 | EP1440474A1 Optoelectronic sensor |
| 07/28/2004 | CN2629342Y Digital power amplification fixed voltage output circuit |
| 07/28/2004 | CN1516920A Multi-level power amplifier |
| 07/28/2004 | CN1516337A Method for inhibiting return effect in circuit and its device |
| 07/28/2004 | CN1516336A 音频功率放大器 Audio Power Amplifier |
| 07/28/2004 | CN1159936C Power controller |
| 07/28/2004 | CN1159847C Comparing unit with biasing and comparision circuit |
| 07/27/2004 | US6769133 Termination circuitry for dual forward and reverse test points for amplifiers |
| 07/27/2004 | US6768779 Pulse referenced control method for enhanced power amplification of a pulse modulated |
| 07/27/2004 | US6768384 High-speed differential preamplifier |
| 07/27/2004 | US6768383 High-frequency amplifier |
| 07/27/2004 | US6768381 Semiconductor power amplifier and multistage monolithic integrated circuit |
| 07/27/2004 | US6768380 Wideband, variable-bandwidth distributed amplifier |
| 07/27/2004 | US6768379 Amplifier circuit |
| 07/27/2004 | US6768378 Distributed RF power amplifier with load compensation |
| 07/27/2004 | US6768377 Impedance matching low noise amplifier having a bypass switch |
| 07/27/2004 | US6768376 Dual mode class D amplifiers |
| 07/27/2004 | US6768375 Multi-reference high accuracy switching amplifier expansion |
| 07/27/2004 | US6768374 Programmable gain amplifier with single stage switched capacitor circuit using bandwidth balancing |
| 07/27/2004 | US6768318 Signal conditioning circuit for resistive sensors |
| 07/27/2004 | US6768192 Pin layout of dual band receiver with two input pads/pins restricted to a single side of a four sided package |
| 07/27/2004 | US6768153 Semiconductor device |
| 07/22/2004 | WO2004062221A1 Isolation interface with capacitive barrier and method for transmitting a signal by means of such isolation interface |
| 07/22/2004 | WO2004062097A1 Quasi-linear multi-state digital modulation through non-linear amplifier arrays |
| 07/22/2004 | WO2004062096A2 Subtractor circuit and power detector device provided with said subtractor circuit |
| 07/22/2004 | WO2004062095A1 High efficiency power amplification apparatus with multiple power mode |
| 07/22/2004 | WO2004062093A2 Common gate with resistive feed-through low noise amplifier |
| 07/22/2004 | WO2004062089A2 Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same |
| 07/22/2004 | WO2004062088A2 Power amplifier circuit and method using bandlimited signal component estimates |
| 07/22/2004 | WO2004040403A3 Lower complexity layered modulation signal processor |
| 07/22/2004 | WO2004023648A3 Amplifier power control circuit |
| 07/22/2004 | WO2003065569A3 Output circuit for a semiconductor amplifier element |
| 07/22/2004 | US20040141562 Signal processing system with baseband noise modulaltion chopper circuit timing to reduce noise |
| 07/22/2004 | US20040141558 Signal processing system with baseband noise modulation and noise fold back reduction |
| 07/22/2004 | US20040141248 Preamplifier circuit and method for a disk drive device |
| 07/22/2004 | US20040140855 Coolant test method and formulation |
| 07/22/2004 | US20040140854 Amplifier arrangement, circuit and method with improved common mode rejection ratio |
| 07/22/2004 | US20040140850 Cathode-coupled pentode valve amplifier with servo offset controlled push-pull output stage |
| 07/22/2004 | US20040140849 Negative feedback amplifier with electrostatic discharge protection circuit |
| 07/22/2004 | US20040140848 Phase shift modulation class D amplifier |
| 07/22/2004 | US20040140847 Segmented chopping amplifier |
| 07/22/2004 | US20040140827 Output circuit of semiconductor integrated circuit device |
| 07/22/2004 | DE10300892A1 Tunable switchable band-pass filter device for two frequency ranges, e.g. for television receiver, has second secondary resonant circuit connected to first primary resonant circuit |
| 07/22/2004 | DE10300431A1 Regelbarer HF-Breitbandverstärker mit konstanter Eingangsimpedanz Adjustable RF wideband amplifier with constant input impedance |
| 07/22/2004 | DE10300195A1 Low frequency class D vacuum tube amplifier has multivibrator that varies clock output pulse duty cycle according to control voltage so pulse time-voltage area difference varies with input signal |
| 07/22/2004 | DE10300011A1 Subtrahiererschaltung und Leistungsdetektoranordnung mit der Subtrahiererschaltung Subtractor circuit and power detector arrangement with the subtractor circuit |
| 07/22/2004 | DE10259338A1 Monolithic integrated circuit power amplifier, e.g. for portable radio equipment, has LC balun with matching network presenting definable impedance to output of amplifier circuit |
| 07/22/2004 | CA2514679A1 High efficiency power amplification apparatus with multiple power mode |
| 07/21/2004 | EP1438838A1 Adaptive bandwidth control in a kinescope amplifier |
| 07/21/2004 | EP1438571A1 Biosensor circuit and sensor array consisting of a plurality of said biosensor circuits and biosensor array |
| 07/21/2004 | EP1384324A4 A cmos circuit with constant output swing and variable time delay for a voltage controlled oscillator |
| 07/21/2004 | EP1206776B1 Pseudo-differential current sense amplifier with hysteresis |
| 07/21/2004 | EP0962120B8 High-fidelity and high-efficiency analog amplifier combined with digital amplifier |
| 07/21/2004 | CN1515071A Apparatus and method for tuning inter-stage mathching network of integrated multistage |
| 07/21/2004 | CN1515070A 低噪声放大器 Low-noise amplifier |
| 07/21/2004 | CN1515069A Bias adjustment for power amplifier |
| 07/21/2004 | CN1514539A Gain changeable amplifier |
| 07/21/2004 | CN1158754C Biasing arrangement for field effect transistors |
| 07/20/2004 | US6766152 Signal treating circuit with a class A/B output stage connectable to a source of multiple supply voltages |
| 07/20/2004 | US6766151 Distortion-compensating apparatus |
| 07/20/2004 | US6766026 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 07/20/2004 | US6765802 Audio sound quality enhancement apparatus |
| 07/20/2004 | US6765540 Tunable antenna matching circuit |
| 07/20/2004 | US6765518 Method and apparatus for efficient mixed signal processing in a digital amplifier |
| 07/20/2004 | US6765469 Printed circuit board transformer |
| 07/20/2004 | US6765447 Microwave oscillator having improved phase noise of oscillation signal |
| 07/20/2004 | US6765442 RF pulse power amplifier |
| 07/20/2004 | US6765441 Differential amplifier |
| 07/20/2004 | US6765436 Power supply based audio compression for digital audio amplifier |
| 07/20/2004 | US6765420 Pulse width detection circuit filtering the input signal and generating a binary signal |
| 07/20/2004 | US6765377 Q-emphasized amplifier with inductor-based bandwidth booster |
| 07/20/2004 | US6765268 Multiple transistors having a common gate pad between first group of drains and second group of drains |
| 07/20/2004 | CA2379300C Feedforward amplifier |
| 07/15/2004 | WO2004059850A2 Apparatus and method for safely handling asynchronous shutdown of pulsewidth modulated output |
| 07/15/2004 | WO2004059848A2 Modulation of a digital input signal using a digital signal modulator and signal splitting |
| 07/15/2004 | WO2004059841A1 Ground switching circuit |
| 07/15/2004 | WO2003079547B1 Reconfigurable distributed active transformers |
| 07/15/2004 | US20040137856 Negative feedback amplifier for transmitter, transmitter, and method of correcting error in the negative feedback amplifier |
| 07/15/2004 | US20040135638 Method and circuit for a dual supply amplifier |
| 07/15/2004 | US20040135637 High bandwidth and wide dynamic range preamplifier with high stability |
| 07/15/2004 | US20040135635 Amplifier circuitry |
| 07/15/2004 | US20040135633 High frequency power amplification electric part and wireless communication system |