| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/29/2012 | EP2422447A1 Electronic circuits including a mosfet and a dual-gate jfet |
| 02/29/2012 | EP2422401A1 Power amplifier device with reduced bulk |
| 02/29/2012 | CN202153724U 有源组合扬声器 Active portfolio Speaker |
| 02/29/2012 | CN202153723U 一种油浸式晶体管音频放大器 One kind of oil-immersed transistor audio amplifier |
| 02/29/2012 | CN102365820A Fast common mode feedback control for differential driver |
| 02/29/2012 | CN102364875A Double-loop feedback high-linearity variable gain amplifier |
| 02/29/2012 | CN102364874A Biasing circuit of dual-band power amplifier |
| 02/29/2012 | CN102364873A Circuit and method for improving coupling directionality |
| 02/29/2012 | CN101599765B Analog-to-digital conversion devices and analog-to-digital conversion stages thereof |
| 02/29/2012 | CN101060308B Temperature compensation of small signal gain for an amplifier stage |
| 02/29/2012 | CN101034876B High-frequency signal coupling device |
| 02/28/2012 | US8125276 Sharing of inductor interstage matching in parallel amplification system for wireless communication systems |
| 02/28/2012 | US8125275 Amplifier having input/output cells with discrete gain steps |
| 02/28/2012 | US8125274 Differential amplifier |
| 02/28/2012 | US8125273 Apparatus and method for driving an LED |
| 02/28/2012 | US8125272 Low power wide-band amplifier with reused current |
| 02/28/2012 | US8125271 Power amplifier and bridge circuit in power amplifier |
| 02/28/2012 | US8124924 Photoelectric conversion device and electronic device provided with the photoelectric conversion device |
| 02/23/2012 | WO2012024429A1 Apparatus and method for a smooth powerup of a reference signal |
| 02/23/2012 | WO2012023624A1 Chireix power amplification method and transmitter using envelope-tracking power supply |
| 02/23/2012 | WO2012003113A3 Grounding switch method and apparatus |
| 02/23/2012 | US20120046004 High performance transmitter preamplification chain with calibration feedback |
| 02/23/2012 | US20120044980 Multi-mode high efficiency linear power amplifier |
| 02/23/2012 | US20120044774 Sense amplifier for low voltage high speed sensing |
| 02/23/2012 | US20120044606 Esd protection of an rf pa semiconductor die using a pa controller semiconductor die |
| 02/23/2012 | US20120044023 Apparatus and Method for a Smooth Powerup of a Reference Signal |
| 02/23/2012 | US20120044022 Dynamic device switching (dds) of an in-phase rf pa stage and a quadrature-phase rf pa stage |
| 02/23/2012 | US20120044021 Differential amplifier circuit |
| 02/23/2012 | US20120044020 Method and apparatus for sensing a curren for varying impedance loads |
| 02/23/2012 | US20120044018 Systems and methods for improved over-current clipping |
| 02/22/2012 | EP2419997A2 Low noise amplifier with combined input matching, balun, and transmit/receive switch |
| 02/22/2012 | EP2419996A1 Amplifier circuit, integrated circuit and radio frequency communication unit |
| 02/22/2012 | EP2070278B1 Output power correction module for amplifiers in transmitters |
| 02/22/2012 | EP1998439B1 Analog circuit |
| 02/22/2012 | EP1505724B1 Power amplification device |
| 02/22/2012 | CN102362429A Amplifier supporting multiple gain modes |
| 02/22/2012 | CN102361462A Operating point setting of an amplifier |
| 02/22/2012 | CN101501986B 堆叠式缓冲器 Stack Buffer |
| 02/22/2012 | CN101488730B 放大器、音频系统以及输入信号的放大方法 An amplifier amplifying method, the audio system and the input signals |
| 02/21/2012 | US8120428 Apparatus and method for low noise amplification |
| 02/21/2012 | US8120426 Low noise class AB linearized transconductor |
| 02/21/2012 | US8120425 System and method for common mode translation |
| 02/21/2012 | US8120424 Class AB output stages and amplifiers including class AB output stages |
| 02/21/2012 | US8120422 Ripple reduction loop for chopper amplifiers and chopper-stabilized amplifiers |
| 02/21/2012 | US8120388 Comparator, sample-and-hold circuit, differential amplifier, two-stage amplifier, and analog-to-digital converter |
| 02/21/2012 | US8119973 Light receiving circuit |
| 02/16/2012 | WO2012021461A2 System and method for biasing a power amplifier |
| 02/16/2012 | WO2012020363A1 Switched-mode power supply apparatus and method |
| 02/16/2012 | WO2012019949A1 High-frequency power amplifier having doherty enhancement |
| 02/16/2012 | WO2012019940A1 Integrated amplifier for driving acoustic transducers |
| 02/16/2012 | US20120039603 Method for data transmission using a linc amplifier, a linc amplifier, a transmitting device, a receiving device, and a communication network therefor |
| 02/16/2012 | US20120039487 First stage amplifier circuit |
| 02/16/2012 | US20120039136 Circuits and methods for reducing noise in the power supply of circuits coupled to a bidirectional bus |
| 02/16/2012 | US20120038424 Broadband power combining method and high power amplifier using same |
| 02/16/2012 | US20120038423 Variable gain bicmos amplifier |
| 02/16/2012 | US20120038422 Symmetrically operating single-ended input buffer devices and methods |
| 02/16/2012 | US20120038421 Wireless communication device and semiconductor package device having a power amplifier therefor |
| 02/16/2012 | US20120038405 Delay lines, amplifier systems, transconductance compensating systems and methods of compensating |
| 02/16/2012 | DE102010034067A1 Hochfrequenzleistungsverstärker mit Doherty-Erweiterung High-frequency power amplifier with Doherty extension |
| 02/15/2012 | EP2418769A1 Power amplifier for mobile telecommunications |
| 02/15/2012 | EP2418768A1 Integrated amplifier for driving acoustic transducers |
| 02/15/2012 | CN102356545A Amplifying driving unit using giant magneto resistance sensor and diagnosis device using the same |
| 02/15/2012 | CN102356544A Digital filtering in a class d amplifier system to reduce noise fold over |
| 02/15/2012 | CN102356543A Common-gate common-source amplifier |
| 02/15/2012 | CN102356542A Cascode amplifier with protection circuitry |
| 02/15/2012 | CN102356536A Passive differential voltage doubler |
| 02/15/2012 | CN102355212A Rail-to-rail input stage with current compensation function |
| 02/15/2012 | CN102355211A Signal pre-amplifier circuit of aerospace-grade photoelectric encoder |
| 02/15/2012 | CN102355210A Minimizing switching noise and its effects in auto-zeroed amplifiers |
| 02/15/2012 | CN102355209A Amplifier employing interleaved signals for PWM ripple suppression |
| 02/15/2012 | CN102355208A Broadband high-power amplifier |
| 02/15/2012 | CN102355207A Ka frequency-band solid-state power amplifier |
| 02/15/2012 | CN102355206A Power amplifier and gain compensation method for same |
| 02/15/2012 | CN102355205A Solid-state radio frequency generator |
| 02/15/2012 | CN102355204A Automatic audio power amplifier switching circuit and power amplifier chip |
| 02/15/2012 | CN102355202A Feedforward power amplifier with predistortion power amplifier |
| 02/15/2012 | CN102355201A Dynamic performance optimization method and optimization device for power amplifier tube in amplifier circuit |
| 02/15/2012 | CN102355200A Single-ended input and differential output parallel dual-frequency low noise amplifier and design method thereof |
| 02/15/2012 | CN102355199A Low-noise amplifier |
| 02/15/2012 | CN102355197A Power supply providing ultrafast modulation of output voltage |
| 02/15/2012 | CN102354242A Power control circuit |
| 02/15/2012 | CN101820254B 带有pwm电路的d类功率放大器 D class amplifier circuit with pwm |
| 02/15/2012 | CN101814900B D类音频放大器及其输出非线性改善方法 Class D audio amplifier and its output nonlinear ways to improve |
| 02/15/2012 | CN101741316B 一种增益可变的宽带射频低噪声放大器 A gain broadband RF low noise amplifier |
| 02/15/2012 | CN101534096B 套筒式运算放大器与参考缓冲器 Telescopic op amp and reference buffer |
| 02/14/2012 | US8116700 Reducing common mode effects in an output stage |
| 02/14/2012 | US8115555 Balun function with reference enhancement in single-ended port |
| 02/14/2012 | US8115554 Semiconductor device |
| 02/14/2012 | US8115550 Transmitter |
| 02/14/2012 | US8115549 Amplifier circuit and radio receiver |
| 02/14/2012 | US8115546 Apparatus and method for maximizing performance of peaking amplifier in doherty amplifier |
| 02/14/2012 | US8115544 Amplifier circuit and integrated circuit therefor |
| 02/14/2012 | US8115543 Mixed-signal transmission circuit for switching power amplifiers |
| 02/14/2012 | US8115542 Variable frequency class-D amplifier, control method thereof, and ramp generator therefor |
| 02/14/2012 | US8115541 Three-level half-bridge pulse-width modulation amplifier and method of driving the same |
| 02/14/2012 | US8115540 Amplifying apparatus, method of output control and control program |
| 02/14/2012 | US8115152 Method of operating a photoconductor in an imaging system, and read-out circuit employing an AC-biased photoconductor |
| 02/14/2012 | US8113057 Switched resonant ultrasonic power amplifier system |
| 02/14/2012 | CA2616285C Predistortion linearization device with adjustable amplitude and shape |
| 02/09/2012 | WO2012018233A2 Amplifier supporting multi mode and amplifying method thereof |