| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 01/24/2008 | US20080018395 Anti-pop circuit |
| 01/24/2008 | US20080018394 Operational amplifier and method for canceling offset voltage of operational amplifier |
| 01/24/2008 | US20080018393 Offset voltage correction circuit and class D amplifier |
| 01/24/2008 | US20080018392 Minimizing Switching Noise and its Effects in Auto-Zeroed Amplifiers |
| 01/24/2008 | DE102006032102A1 Frequenzselektiver Transimpedanzverstärker Frequency Selective transimpedance amplifier |
| 01/23/2008 | EP1881598A2 Device for filtering a power supply circuit, in particular for an audio amplifier in an automobile vehicle |
| 01/23/2008 | EP1881597A1 Multilevel LINC transmitter |
| 01/23/2008 | EP1312158B1 Transmitter including a composit amplifier |
| 01/23/2008 | EP1298793B1 High-frequency amplifying device |
| 01/23/2008 | CN101111992A Polar coordinate modulation circuit, polar coordinate modulation method, integrated circuit, and radio transmission apparatus |
| 01/23/2008 | CN101110577A Operational amplifier and operating method thereof |
| 01/23/2008 | CN101110575A Processing method for output stage circuit, power amplification circuit and electrical signal |
| 01/23/2008 | CN101110573A Ultra-broadband low-noise amplifier circuit adopting noise cancellation technology |
| 01/23/2008 | CN101110572A Feedforward linear power amplifying circuit and control method thereof |
| 01/23/2008 | CN101110571A Digital pre-distorting power amplifier and implementing method thereof |
| 01/23/2008 | CN101110570A Method for restraining noises of digital audio frequency power amplifier |
| 01/23/2008 | CN101110569A Abnormality detection circuit |
| 01/22/2008 | US7321273 Off-chip LC circuit for lowest ground and VDD impedance for power amplifier |
| 01/22/2008 | US7321265 Distortion compensating circuit having negative gain deviation, power amplifier using the same, and communication device having power amplifier |
| 01/22/2008 | US7321264 Method, arrangement and device for controlling predistortion |
| 01/22/2008 | US7321262 Power conversion system |
| 01/22/2008 | US7321261 Full swing amplifying circuit and applications thereof |
| 01/22/2008 | US7321260 Ping-pong auto-zero amplifier with glitch reduction |
| 01/22/2008 | US7321259 Programmable logic enabled dynamic offset cancellation |
| 01/22/2008 | US7321251 Bias circuit and method of producing semiconductor device |
| 01/22/2008 | CA2297462C Adaptive pre-equalization apparatus for correcting linear distortion of a non-ideal data transmission system |
| 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 | US20080012640 Unilateralized amplifier |
| 01/17/2008 | US20080012639 Dual Mode Audio Amplifier |
| 01/17/2008 | US20080012636 Electric Amplifier and Method for the Control Thereof |
| 01/17/2008 | US20080012635 Multiple power mode amplifier with bias modulation option and without bypass switches |
| 01/17/2008 | US20080012634 Programmable gain amplifier |
| 01/16/2008 | EP1879290A2 Amplifier circuits, methods of starting and stopping amplifier circuits |
| 01/16/2008 | EP1879047A2 Automotive radar systems and techniques |
| 01/16/2008 | EP1879046A2 Automotive radar systems and techniques |
| 01/16/2008 | EP1879045A2 Automotive radar systems and techniques |
| 01/16/2008 | CN201008135Y Audio frequency power amplifier with voltage current negative feedback regulation function |
| 01/16/2008 | CN101107797A Method and system for determining the amplitude and/or phase of the output signal for a transmission body depending on the amplitude of the input signal |
| 01/16/2008 | CN101106358A Linear RF power amplifier circuit and its optimization method |
| 01/16/2008 | CN101106357A Amplifier circuits, methods of starting and stopping amplifier circuits |
| 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 | US7319716 Transmitter image suppression in TDD transceivers |
| 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 | US7319310 Regulated power supply unit |
| 01/10/2008 | WO2008004074A2 Method and apparatus for providing adaptive supply voltage control of a power amplifier |
| 01/10/2008 | WO2008004034A1 Integrated amplifier bias circuit |
| 01/10/2008 | US20080008262 Low-Noise Transmitter System and Method |
| 01/10/2008 | US20080007335 Power amplifier |
| 01/10/2008 | US20080007334 Tuneable Circuit for Canceling Third Order Modulation |
| 01/10/2008 | US20080007333 Method and apparatus for controlling a power amplifier in a mobile communication system |
| 01/10/2008 | US20080007329 Multiple power mode amplifier with bias modulation option and without bypass switches |
| 01/10/2008 | US20080007328 Multiple power mode amplifier with bias modulation option and without bypass switches |
| 01/10/2008 | US20080007327 Multiple power mode amplifier with bias modulation option and without bypass switches |
| 01/09/2008 | EP1876705A2 Power division multiplexing with incoherent signals and fixed power hierarchy |
| 01/09/2008 | EP1876704A2 Regulation of an amplification apparatus |
| 01/09/2008 | EP1875601A1 An adaptive protection circuit for a power amplifier |
| 01/09/2008 | CN101103606A Clipping of transmission signal |
| 01/09/2008 | CN101103524A Power amplifier system |
| 01/09/2008 | CN101102120A Wireless communication apparatus |
| 01/09/2008 | CN101102094A Amplifier circuit |
| 01/09/2008 | CN101102093A 半导体器件 Semiconductor devices |
| 01/08/2008 | US7317440 Circuit and method for driving a liquid crystal display device using low power |
| 01/08/2008 | US7317358 Differential amplifier circuit |
| 01/08/2008 | US7317353 Amplification device |
| 01/08/2008 | US7317351 Low noise amplifier |
| 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 | WO2008002787A2 Dynamic performance control of broadband tuner |
| 01/03/2008 | WO2008002225A1 Switched mode power amplification |
| 01/03/2008 | WO2008000916A1 Controlling switching mode power supply of power amplifier |
| 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 | US20080001673 Semiconductor Device |
| 01/03/2008 | US20080001660 Power Amplifier and Pulse-Width Modulated Amplifier |
| 01/02/2008 | EP1873910A1 Ultra-wide band differential input/output, high frequency amplifier in an integrated circuit |
| 01/02/2008 | EP1873908A1 Transmit-receive circuit with PIN diodes |
| 01/02/2008 | EP1873907A1 RF amplifier with pulse detection and bias control |
| 01/02/2008 | EP1873906A2 Amplifier control device |
| 01/02/2008 | EP1873551A1 Automotive radar systems and techniques |
| 01/02/2008 | EP1872473A1 A method for voltage modulation |
| 01/02/2008 | EP1872472A2 Adaptive predistortion linearized amplifier system employing selective sampling |
| 01/02/2008 | EP1413108B1 Method for avoiding interference radiation of am transmitters used in digital transmission |
| 01/02/2008 | EP1296447B1 High-frequency amplifying device |
| 01/02/2008 | CN101098171A Method for applying radio frequency feedforward technique in power amplifier |
| 01/02/2008 | CN101098128A Single stage balanced valve amplifier |
| 01/02/2008 | CN101098127A RF power amplifier |
| 01/02/2008 | CN101098125A RF amplifier with pulse detection and bias control |
| 01/02/2008 | CN101098124A TDD RF high power LDMOS amplifier gate voltage control circuit |
| 01/02/2008 | CN101098123A Low-voltage and low-power dissipation pseudo-two stage Class-AB OTA structure |
| 01/02/2008 | CN100359957C High-frequency power amplifying electric unit and radio communication system |
| 01/02/2008 | CN100359807C Terminal structure for high-speed high-pin density chip |
| 01/02/2008 | CN100359801C Method and device for compensating hybrid distortion |
| 01/01/2008 | US7315208 Method for improving the output power of a non-linear power amplifier |
| 01/01/2008 | US7315207 Doherty amplifier and its distortion characteristic compensation method |