| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/10/2005 | WO2005013478A1 Method for voltage stabilisation on electrodes of source-drain transistors of a power amplifier output stage and an output stage for carrying out said method |
| 02/10/2005 | WO2005013477A2 Power distribution and biasing in rf switch-mode power amplifiers |
| 02/10/2005 | WO2005013029A1 A control circuit for diode based rf circuits |
| 02/10/2005 | WO2004075400A3 Dual band power amplifier with improved isolation |
| 02/10/2005 | US20050033902 Receiver, transceiver circuit, signal transmission method, and signal transmission system |
| 02/10/2005 | US20050033792 System and method for providing delay line and/or finite impulse response filters using a lossless and dispersion-free transmission line |
| 02/10/2005 | US20050033168 Ultrasound transmit beamformer integrated circuit and method |
| 02/10/2005 | US20050032488 System and method for current-mode amplitude modulation |
| 02/10/2005 | US20050030773 Voltage-current converter with adjustable quiescent current |
| 02/10/2005 | US20050030681 Source follower with rail-to-rail voltage swing |
| 02/10/2005 | US20050030273 Current drive system with high uniformity reference current and its current driver |
| 02/10/2005 | US20050030107 Semiconductor device |
| 02/10/2005 | US20050030106 Output overvoltage protection circuit for power amplifier |
| 02/10/2005 | US20050030105 Temperature-insensitive bias circuit for high-power amplifiers |
| 02/10/2005 | US20050030104 Power amplifier |
| 02/10/2005 | US20050030103 System and method for providing distributed amplification |
| 02/10/2005 | US20050030098 Distributed circular geometry power amplifier architecture |
| 02/10/2005 | US20050030097 Zero voltage class AB minimal delay output stage and method |
| 02/10/2005 | US20050030096 Balanced variable gain amplifier capable of achieving performance by low source voltage |
| 02/10/2005 | US20050030095 Differential amplifier and comparator using the same |
| 02/10/2005 | US20050030094 Low power consumption adaptive power amplifier |
| 02/10/2005 | US20050030093 Method and apparatus for efficient mixed signal processing in a digital amplifier |
| 02/10/2005 | US20050030092 Active filter circuit with operational amplifier |
| 02/10/2005 | US20050030081 Offset correcting method, offset correcting circuit, and electronic volume |
| 02/10/2005 | US20050030070 Input circuit, display device and information display apparatus |
| 02/10/2005 | US20050029994 Pulse-width modulation circuit and switching amplifier using the same |
| 02/10/2005 | DE10297628T5 Treibeschaltung Drive circuit |
| 02/09/2005 | EP1505726A1 Asymmetric, optimized common-source bi-directional amplifier |
| 02/09/2005 | EP1505725A1 Power amplifier |
| 02/09/2005 | EP1505724A1 Power amplification device |
| 02/09/2005 | EP1504543A2 Data access arrangement using a high frequency transformer for electrical isolation |
| 02/09/2005 | EP1504526A1 Improved variable gain amplifier |
| 02/09/2005 | EP1175725B1 Adaptive linearizer for rf power amplifiers |
| 02/09/2005 | CN2678249Y 500 MW power amplifier for PHS system base station |
| 02/09/2005 | CN2678248Y 2-W power amplifier for PHS system base station |
| 02/09/2005 | CN1579046A Power amplifier |
| 02/09/2005 | CN1578127A High frequency power amplifier circuit, high frequency power amplifier electronic component and method thereof |
| 02/09/2005 | CN1578126A BTL amplifying system |
| 02/09/2005 | CN1578125A Power amplifier, power distributor, and power combiner |
| 02/09/2005 | CN1578124A 差分放大器 Differential amplifier |
| 02/09/2005 | CN1578123A Amplifier circuit having signal detection function |
| 02/09/2005 | CN1578122A Offset correct method, offset correct circuit and electronic sound volume device |
| 02/09/2005 | CN1578121A High frequency power amplifier circuit and radio communication system |
| 02/09/2005 | CN1578120A High frequency amplifier circuit and mobile communication terminal using the same |
| 02/09/2005 | CN1578117A 信号输出电路 Signal output circuit |
| 02/09/2005 | CN1578116A 电压产生电路 Voltage generating circuit |
| 02/09/2005 | CN1577853A 高频功率放大器模块及半导体集成电路器件 High-frequency power amplifier module and semiconductor integrated circuit device |
| 02/09/2005 | CN1577607A Amplifying circuit, amplifying apparatus, and memory apparatus |
| 02/09/2005 | CN1577540A Laser driver circuit with reduced noise and optical pickup circuit for use with the same |
| 02/09/2005 | CN1188946C Circuit and method for linearizing amplitude modulation in power amplifier |
| 02/09/2005 | CN1188945C Calibrating apparatus and method for amplifier |
| 02/08/2005 | US6854076 Method and apparatus for calibration of an electronic device |
| 02/08/2005 | US6853838 Biasing circuit for degenerated differential pair |
| 02/08/2005 | US6853510 High-speed low-capacitive load common mode feedback |
| 02/08/2005 | US6853250 Amplifier power control circuit |
| 02/08/2005 | US6853245 Doherty amplifier |
| 02/08/2005 | US6853244 Multi-mode multi-amplifier architecture |
| 02/08/2005 | US6853243 Wireless communication frequency signal amplification apparatus and transmitting and receiving apparatus |
| 02/08/2005 | US6853242 Power supply based audio compression for digital audio amplifier |
| 02/08/2005 | US6853241 Switched-capacitor amplifier and analog interface circuit for charge coupled element adopting the same |
| 02/08/2005 | US6853236 Circuit apparatus operable under high voltage |
| 02/08/2005 | US6853235 High frequency switch, amplifying circuit, and mobile communication terminal |
| 02/08/2005 | US6853214 Circuit configuration for controlling load-dependent driver strengths |
| 02/08/2005 | US6853213 Input/output circuit, reference-voltage generating circuit, and semiconductor integrated circuit |
| 02/08/2005 | CA2437443A1 Dynamically tuned amplifier for frequency shift keyed signals |
| 02/08/2005 | CA2315053C Method and apparatus for determining an operating point of a non-linear amplifier of a communication channel |
| 02/03/2005 | WO2005011181A2 Device and method for signal processing |
| 02/03/2005 | WO2005011110A1 Absorptive microwave single pole single throw switch |
| 02/03/2005 | WO2005011108A2 Low-power high-psrr current-mode microphone pre-amplifier system and method |
| 02/03/2005 | WO2005011106A2 A low-power wide dynamic range envelope detector system and method |
| 02/03/2005 | WO2005011105A2 Modulated triangular wave amplifier |
| 02/03/2005 | WO2005011104A2 Low-consumption voltage amplifier |
| 02/03/2005 | WO2005010900A1 Inductors and transformers in integrated circuits |
| 02/03/2005 | WO2004102789A3 Wideband constant-gain voltage amplifier |
| 02/03/2005 | WO2004095688A3 Amplifier circuit |
| 02/03/2005 | US20050026571 Asymmetric, optimized common-source bi-directional amplifier |
| 02/03/2005 | US20050026322 Ideal operational amplifier layout techniques for reducing package stress and configurations therefor |
| 02/03/2005 | US20050025323 Multi-channel power amplifier with channels independently self-configuring to a bridge or single-ended output, particularly for audio applications |
| 02/03/2005 | US20050025256 Method of implementing modulation and modulator |
| 02/03/2005 | US20050025023 Front photo detector having no gain selection switch, optical pick-up including the front photo detector, and optical recording and/or playing apparatus including the front photo detector |
| 02/03/2005 | US20050024966 Amplifier and semiconductor storage device using the same |
| 02/03/2005 | US20050024150 Monolithic amplifier with high-value, monolithically formed passive feedback resistor |
| 02/03/2005 | US20050024149 Apparatus and method for converting a fully-differential class-ab input signal to a rail-to-rail single ended output signal |
| 02/03/2005 | US20050024147 Power distribution and biasing in RF switch-mode power amplifiers |
| 02/03/2005 | US20050024146 High speed high gain amplifier |
| 02/03/2005 | US20050024143 Analog electronic device |
| 02/03/2005 | US20050024142 Variable gain amplifier system |
| 02/03/2005 | US20050024141 Signal output circuit |
| 02/03/2005 | US20050024140 Symmetrical current amplifier |
| 02/03/2005 | US20050024139 Multi-channel power amplifier self-configuring to a bridge or single-ended output, particularly for audio applications |
| 02/03/2005 | US20050024136 High frequency circuit using high output amplifier cell block and low output amplifier cell block |
| 02/03/2005 | US20050024135 Amplifier circuit with active gain step circuit |
| 02/03/2005 | US20050024134 Drive circuit, device, and method for suppressing noise, and use |
| 02/03/2005 | US20050024133 Method and apparatus for switching amplification having variable sample point and variable order correction |
| 02/03/2005 | US20050024123 Bias circuit and method of producing semiconductor device |
| 02/03/2005 | US20050024103 Circuit arrangement for controlling power semiconductor transistors |
| 02/03/2005 | US20050024095 Low jitter input buffer with small input signal swing |
| 02/03/2005 | US20050024031 Voltage generating circuit |
| 02/03/2005 | US20050023542 Photodetector for weak light having charge reset means |
| 02/03/2005 | US20050023443 Photocurrent-to-voltage conversion apparatus including non-diode-connected clamping MOS transistor |