| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/23/2008 | CN101110570A Method for restraining noises of digital audio frequency power amplifier |
| 01/23/2008 | CN101110569A Abnormality detection circuit |
| 01/23/2008 | CN100364239C Transmitting circuit device and wireless communications device |
| 01/22/2008 | US7321752 Linear amplification arrangement with non-linear amplifier element for a mobile radio device |
| 01/22/2008 | US7321273 Off-chip LC circuit for lowest ground and VDD impedance for power amplifier |
| 01/22/2008 | US7321266 Current-matching variable gain amplifier |
| 01/22/2008 | US7321263 Class E power amplifier circuit and associated transmitter circuits |
| 01/22/2008 | US7321262 Power conversion system |
| 01/22/2008 | US7321253 Multiplier |
| 01/22/2008 | US7321251 Bias circuit and method of producing semiconductor device |
| 01/22/2008 | US7321246 Driver circuit for a liquid crystal display |
| 01/22/2008 | US7321245 Pipelined AD converter capable of switching current driving capabilities |
| 01/22/2008 | US7320482 Semiconductor integrated circuit device |
| 01/17/2008 | WO2008008751A2 Power amplifier with output voltage compensation |
| 01/17/2008 | WO2008008528A2 Unilateralized amplifier |
| 01/17/2008 | WO2008007312A1 Power amplifier |
| 01/17/2008 | WO2008007308A1 Class d audio amplifier |
| 01/17/2008 | WO2008006381A2 Self-oscillating modulator with improved synchronisation and pwm cycle constraints |
| 01/17/2008 | WO2008006367A1 A high-mode self-oscillating pulse modulator |
| 01/17/2008 | WO2008006337A1 Method for processing sensor signals subject to an offset and sensor arrangement designed to carry out the method |
| 01/17/2008 | WO2007125496A3 Power control of a power amplifier using pulse width modulation of input signal |
| 01/17/2008 | WO2007124422A3 Low power output stage |
| 01/17/2008 | US20080013381 Sense amplifier with reduced area occupation for semiconductor memories |
| 01/17/2008 | US20080012645 Thermally distributed integrated power amplifier module |
| 01/17/2008 | US20080012644 Rf power sensor with chopping amplifier |
| 01/17/2008 | US20080012642 Serial link receiver with wide input voltage range and tolerance to high power voltage supply |
| 01/17/2008 | US20080012641 Operational Amplifier |
| 01/17/2008 | US20080012640 Unilateralized amplifier |
| 01/17/2008 | US20080012639 Dual Mode Audio Amplifier |
| 01/17/2008 | US20080012600 Current-controlled CMOS circuits with inductive broadbanding |
| 01/16/2008 | EP1879290A2 Amplifier circuits, methods of starting and stopping amplifier circuits |
| 01/16/2008 | EP1711875A4 Bootstrap capacitor refresh circuit |
| 01/16/2008 | CN201008137Y Dual-digital power amplifier thermal backup device for digital train broadcasting machine |
| 01/16/2008 | CN201008136Y Power amplifier and loading output detecting apparatus |
| 01/16/2008 | CN201008135Y Audio frequency power amplifier with voltage current negative feedback regulation function |
| 01/16/2008 | CN101107775A 高效率开关模式功率放大器 High efficiency switch mode power amplifier |
| 01/16/2008 | CN101106361A Mutually supplementary gain control circuit |
| 01/16/2008 | CN101106360A DC offset cancellation for a trans-impedance amplifier |
| 01/16/2008 | CN101106359A Mutual resistance amplifier |
| 01/16/2008 | CN101106358A Linear RF power amplifier circuit and its optimization method |
| 01/16/2008 | CN101106356A Power amplification circuit and its initialization method and power amplification method |
| 01/16/2008 | CN100362746C Transmitter |
| 01/15/2008 | US7319763 Power amplification for parametric loudspeakers |
| 01/15/2008 | US7319365 Signal determining apparatus including amplifier circuit with variable response speed |
| 01/15/2008 | US7319364 Amplifier circuit having improved linearity and frequency band using multiple gated transistor |
| 01/15/2008 | US7319362 Power amplifying apparatus |
| 01/15/2008 | US7319220 Trans-impedance amplifier with offset current |
| 01/10/2008 | WO2008004074A2 Method and apparatus for providing adaptive supply voltage control of a power amplifier |
| 01/10/2008 | WO2008003751A1 Device for amplifying a broadband rf signal |
| 01/10/2008 | WO2008003235A1 Bone sensing audio bi-directional transmitting and receiving device |
| 01/10/2008 | US20080008262 Low-Noise Transmitter System and Method |
| 01/10/2008 | US20080007344 DC Offset Cancellation For A Trans-Impedance Amplifier |
| 01/10/2008 | US20080007343 Tuning A Trans-Impedance Amplifier |
| 01/10/2008 | US20080007342 Power amplifier |
| 01/10/2008 | US20080007341 Automatic bias control circuit for reduced current consumption in a linear power amplifier |
| 01/10/2008 | US20080007340 Digitally adjusted variable gain amplifier (vga) using switchable differential pairs |
| 01/10/2008 | US20080007339 Transmitter apparatus with extended gain control |
| 01/10/2008 | US20080007338 Regulated cascode circuit, an amplifier including the same, and method of regulating a cascode circuit |
| 01/10/2008 | US20080007337 Distributed Class G Type Amplifier Switching Method |
| 01/10/2008 | US20080007336 Method and device for the reduction of the dc component of a signal transposed into baseband, in particular in a receiver of the direct conversion type |
| 01/10/2008 | US20080007334 Tuneable Circuit for Canceling Third Order Modulation |
| 01/10/2008 | US20080007331 Multiband doherty amplifier |
| 01/10/2008 | US20080007330 Power Amplifier System |
| 01/10/2008 | DE102006031053A1 Anordnung zum Bestimmen der Betriebskenngrößen eines Hochfrequenz-Leistungsverstärkers Arrangement for determining the operating characteristics of a high frequency power amplifier |
| 01/10/2008 | DE102006031046A1 Anordnung zum Bestimmen der Betriebkenngrößen eines Hochfrequenz-Leistungsverstärkers Arrangement for determining the operating characteristics of a high frequency power amplifier |
| 01/09/2008 | EP1876705A2 Power division multiplexing with incoherent signals and fixed power hierarchy |
| 01/09/2008 | EP1875606A2 Programmable microwave circuit |
| 01/09/2008 | EP1875605A1 Differential inductor based low noise amplifier |
| 01/09/2008 | EP1875604A2 A parallel arranged linear amplifier and dc-dc converter |
| 01/09/2008 | EP1875603A1 A power supply system. |
| 01/09/2008 | EP1875602A1 Class-d amplifier |
| 01/09/2008 | EP1875318A1 System and method for compensating the temperature of a resistor |
| 01/09/2008 | CN101103525A Signal processing arrangement and audio system for and method of frequency-dependent amplifying of the sound level of audio signals |
| 01/09/2008 | CN101102120A Wireless communication apparatus |
| 01/09/2008 | CN101102095A Offset voltage correction circuit and class d amplifier |
| 01/09/2008 | CN101102094A Amplifier circuit |
| 01/09/2008 | CN101101491A Power supply circuit |
| 01/09/2008 | CN100361554C Method for recording power amplifier work state information in wireless communication system |
| 01/09/2008 | CN100361050C Improved method and circuit arrangement for signal processing |
| 01/08/2008 | US7317905 Radio-controlled clock and method for gaining time information |
| 01/08/2008 | US7317358 Differential amplifier circuit |
| 01/08/2008 | US7317357 High linearity low noise variable gain amplifier with continuous gain control |
| 01/08/2008 | US7317356 Ultra low-frequency response, DC-blocked low-noise amplifier |
| 01/08/2008 | US7317355 Over-current detection for a power field-effect transistor (FET) |
| 01/08/2008 | US7317350 Transresistance amplifier for a charged particle detector |
| 01/08/2008 | US7317349 Class-D amplifier |
| 01/03/2008 | WO2008002901A1 An amplifier circuit with cross-coupled cascode transistors |
| 01/03/2008 | WO2008002225A1 Switched mode power amplification |
| 01/03/2008 | WO2008001321A2 A device for and a method of processing an audio signal |
| 01/03/2008 | WO2008001168A1 Multiple-input and multiple-output amplifier using mutual induction in the feedback network |
| 01/03/2008 | WO2008000907A1 Passive amplification of signals |
| 01/03/2008 | US20080002983 Amplifier control device |
| 01/03/2008 | US20080002841 Low-power high-PSRR current-mode microphone pre-amplifier system and method |
| 01/03/2008 | US20080002044 Image pickup apparatus and amplification circuit |
| 01/03/2008 | US20080001676 Shorted input detection for amplifier circuits |
| 01/03/2008 | US20080001675 Amplifier circuit |
| 01/03/2008 | US20080001674 Regulation of an amplification apparatus |
| 01/03/2008 | US20080001672 Auto-range current mirror circuit |
| 01/03/2008 | US20080001671 Input Inductive Network For Sample And Hold Amplifiers In High Speed Data Converters |
| 01/03/2008 | US20080001670 Circuit for accurately controlling power amplifier output power |