| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 12/30/2009 | EP2137814A2 Power efficient multistage amplifier and design method |
| 12/30/2009 | EP1402638B1 A method and an arrangement relating to telecommunications systems |
| 12/30/2009 | CN201374680Y Audio power amplifier |
| 12/30/2009 | CN201374679Y Audio power amplifying circuit electrified from computer port |
| 12/30/2009 | CN101615894A Adjustable linear operation transconductance amplifier |
| 12/30/2009 | CN101615893A Amplifier using delta-sigma modulation and method for adjusting errors of same |
| 12/30/2009 | CN101615892A Radiofrequency power amplifier |
| 12/30/2009 | CN101615891A Radio-frequency power amplifier circuit, power control chip and a radio-frequency power amplifying method |
| 12/30/2009 | CN100576951C Redundancy system of multi-source acoustic equipment |
| 12/30/2009 | CN100576727C Stacked rf power amplifier |
| 12/30/2009 | CN100576726C Off-set correcting circuit and operational amplifier circuit |
| 12/30/2009 | CN100576725C Differential receiver providing differential output signal and method |
| 12/30/2009 | CN100576724C Power series predistorter and control method thereof |
| 12/30/2009 | CN100576723C A method and apparatus for pre-conditioning an electrical signal |
| 12/30/2009 | CN100576300C Display device and method of driving the same |
| 12/29/2009 | US7639759 Carrier to noise ratio estimations from a received signal |
| 12/29/2009 | US7639085 Automatic gain control circuit |
| 12/29/2009 | US7639084 Power amplifier with nonlinear compensation, and method thereof |
| 12/29/2009 | US7639082 System and method for amplifier gain measurement and compensation |
| 12/29/2009 | US7639081 Biasing scheme for low-voltage MOS cascode current mirrors |
| 12/29/2009 | US7639079 Techniques for designing wide band low noise amplifiers |
| 12/29/2009 | US7639078 Class AB folded-cascode amplifier having cascode compensation |
| 12/29/2009 | US7639077 Method and apparatus for pre-conditioning an electrical signal |
| 12/29/2009 | US7639073 Switched-capacitor amplifier with improved reset phase |
| 12/29/2009 | US7639072 Controlling a power amplifier to transition among amplifier operational classes according to at least an output signal waveform trajectory |
| 12/29/2009 | US7638750 Optical power for electronic circuits using a single photovoltaic component |
| 12/29/2009 | US7638749 Capacitive transimpedance amplifier for CCD arrays |
| 12/24/2009 | US20090318093 System And Method For Power Detection In A Power Amplifier Using An Adjustable Load |
| 12/24/2009 | US20090316935 Digital microphone |
| 12/24/2009 | US20090315626 High Sensitivity Optical Receiver Employing a High Gain Amplifier and an Equalizing Circuit |
| 12/24/2009 | US20090315625 Method and system for processing signals via an integrated low noise amplifier having configurable input signaling mode |
| 12/24/2009 | US20090315623 Class d audio amplifier |
| 12/24/2009 | US20090315622 Feedforward amplifier and control method thereof |
| 12/24/2009 | US20090315621 Amplifier with gain expansion stage |
| 12/24/2009 | DE102008062308A1 Leistungsverstärker Power amplifier |
| 12/23/2009 | WO2009155566A1 Amplifier with gain expansion stage |
| 12/23/2009 | WO2009153892A1 Amplifier for controlling gain and optical module |
| 12/23/2009 | WO2009153838A1 Receiving device |
| 12/23/2009 | WO2009153218A1 Double-linc switched-mode transmitter |
| 12/23/2009 | EP2135350A2 Electronic circuit for the transmission of high-frequency signals |
| 12/23/2009 | EP1547278B1 Signal, interference and noise power measurement |
| 12/23/2009 | CN101611555A AM loop antenna input circuit and AM radio receiver using the same |
| 12/23/2009 | CN101611544A Balanced amplifying device having a bypass branch |
| 12/23/2009 | CN101611543A A delta-sigma modulation digital-analog converter, digital signal processing method, and AV device |
| 12/23/2009 | CN101610072A Operational amplifier circuit, and driving method of liquid crystal display using the same |
| 12/23/2009 | CN101610071A Preposed amplifier and method for correcting offset voltage of same |
| 12/23/2009 | CN101610070A Preposed amplifier and method for correcting offset voltage of same |
| 12/23/2009 | CN101610069A Power amplifier, power amplifying circuit and power amplifying method |
| 12/23/2009 | CN101610068A Circuit for reducing noise figure of amplifier |
| 12/23/2009 | CN101609345A Linear voltage regulator |
| 12/23/2009 | CN100574094C Variable transconductance circuit |
| 12/23/2009 | CN100574093C Digital audio amplifier, an audio system including the same, and a method of amplifying an audio signal |
| 12/23/2009 | CN100573679C Front photoelectric detector, optical pick-up, and optical recording and/or playing equipment |
| 12/23/2009 | CA2727980A1 Amplifier and optical module performing gain control |
| 12/22/2009 | US7636286 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 |
| 12/22/2009 | US7636017 High-frequency power amplifier |
| 12/22/2009 | US7636016 Current mirror circuit |
| 12/22/2009 | US7636015 Differential amplifier and sampling and holding circuit |
| 12/22/2009 | US7636014 Digitally programmable transconductance amplifier and mixed-signal circuit using the same |
| 12/22/2009 | US7636003 Limiting amplifiers |
| 12/22/2009 | US7635837 Optical receiving circuit |
| 12/22/2009 | CA2503530C Lower complexity layered modulation signal processor |
| 12/22/2009 | CA2484313C Coherent averaging for measuring traveling wave tube amplifier nonlinearity |
| 12/17/2009 | WO2009151973A2 Power amplifier architectures |
| 12/17/2009 | WO2009151406A1 Cmos amplifier with integrated tunable band-pass function |
| 12/17/2009 | WO2009151097A1 Power amplifier and amplification method thereof, and radio wave transmitter using same |
| 12/17/2009 | WO2009150056A1 Amplifier arrangement and method for signal amplification |
| 12/17/2009 | US20090312987 Ambient Light Sensor and Electronic Equipment |
| 12/17/2009 | US20090311980 Double-LINC Switched-Mode Transmitter |
| 12/17/2009 | US20090310979 Electronic circuit and communication system |
| 12/17/2009 | US20090309857 Operational amplifter circuit, and driving method of liquid crystal display using the same |
| 12/17/2009 | US20090309663 Power amplifiers having improved protection against avalanche current |
| 12/17/2009 | US20090309662 Systems and Methods for Power Amplifier with Integrated Passive Device |
| 12/17/2009 | US20090309660 Device for amplifying a broadband rf signal |
| 12/17/2009 | US20090309659 Solid-state ultra-wideband microwave power amplifier employing modular non-uniform distributed amplifier elements |
| 12/17/2009 | US20090309658 Method and apparatus for power converter for class d audio power amplifiers |
| 12/17/2009 | US20090309655 Power amplifier |
| 12/17/2009 | US20090309654 System and method of altering a pwm carrier power spectrum |
| 12/16/2009 | EP2133998A2 Digital-analogue converter for pulse density modulated digital signals |
| 12/16/2009 | EP2133993A1 Gain circuit |
| 12/16/2009 | EP2132872A1 Amplifier pre-distortion systems and methods |
| 12/16/2009 | EP2132871A1 Signal processor comprising a reference voltage circuit |
| 12/16/2009 | EP1618651B1 Amplifier apparatus, method, and system |
| 12/16/2009 | CN201365228Y Pure post power amplifier with high fidelity, high linearity and broad frequency band |
| 12/16/2009 | CN101605287A Integrated circuit used for providing microphone interface |
| 12/16/2009 | CN101604962A Variable gain RF amplifier |
| 12/16/2009 | CN101604961A System and a method for power amplifier having an integrated passive device |
| 12/16/2009 | CN101604960A Systems and methods for switching mode power amplifier control |
| 12/16/2009 | CN101604959A Automatic gain vehicle active antenna amplifier |
| 12/16/2009 | CN101604958A Dual supply amplifier |
| 12/16/2009 | CN101603992A Method for establishing output power comparison table of power amplifier |
| 12/16/2009 | CN100571042C High bandwidth instrument for generating differential signal |
| 12/16/2009 | CN100571025C Differential stage voltage offset trim circuitry |
| 12/16/2009 | CN100571024C Hot standby and concurring system of power amplifier |
| 12/16/2009 | CN100571021C Filterless class D power amplifier |
| 12/15/2009 | US7634244 Variable-gain low noise amplifier for digital terrestrial applications |
| 12/15/2009 | US7634198 In-line distortion cancellation circuits for linearization of electronic and optical signals with phase and frequency adjustment |
| 12/15/2009 | US7634096 Amplifier circuit for capacitive transducers |
| 12/15/2009 | US7633386 Amplifier for multi-use of single environmental sensor |
| 12/15/2009 | US7633354 Multistage tuning-tolerant equalizer filter with improved detection mechanisms for lower and higher frequency gain loops |