| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/12/2010 | CN1909363B 半导体功率器件和rf信号放大器 The semiconductor power device and the rf signal amplifier |
| 05/12/2010 | CN1905360B Methods and apparatus of managing a power amplifier |
| 05/12/2010 | CN1905359B Methods and apparatus of managing a power amplifier |
| 05/12/2010 | CN1855697B Radio frequency power amplifier |
| 05/12/2010 | CN1848670B Power amplifier circuit and method of controlling switch |
| 05/12/2010 | CN1838530B High frequency power amplifier circuit |
| 05/12/2010 | CN1835394B Class-D amplifier |
| 05/12/2010 | CN1835392B Light receiving amplifier circuit and optical pickup device having the same |
| 05/12/2010 | CN1748363B Circuit arrangement and method for the accelerated switching over of an amplifier |
| 05/12/2010 | CN1607722B Digital predistortion circuit and implementation method thereof |
| 05/12/2010 | CN1592086B 放大器电路 The amplifier circuit |
| 05/12/2010 | CN101707476A LDMOS protection circuit |
| 05/12/2010 | CN101178371B Electronic gun power supply for reflected high energy electron diffraction instrument |
| 05/12/2010 | CN101107775B 高效率开关模式功率放大器 High efficiency switch mode power amplifier |
| 05/11/2010 | US7714664 Cascode circuit |
| 05/11/2010 | US7714663 Cascode low noise amplifier with a source coupled active inductor |
| 05/11/2010 | US7714662 Multiband output impedance matching circuit having passive devices, amplifier including multiband input impedance matching circuit having passive devices, and amplifier including multiband input/output impedance matching circuit having passive devices |
| 05/11/2010 | US7714661 Single supply direct drive amplifier |
| 05/11/2010 | US7714660 Amplifier circuit and methods of operation thereof |
| 05/11/2010 | US7714659 Bias circuit with a feedback path and a method for providing a biasing signal |
| 05/11/2010 | US7714656 Operational amplifier |
| 05/11/2010 | US7714655 Closed loop surge protection technique for differential amplifiers |
| 05/11/2010 | US7714654 Amplifier and amplifier gain adjustment circuitry using current steering, and multimode communication device containing same |
| 05/11/2010 | US7714653 Differential amplifier |
| 05/11/2010 | US7714652 Method for adjusting threshold voltage and circuit therefor |
| 05/11/2010 | US7714651 Apparatus and method for low power rail-to-rail operational amplifier |
| 05/11/2010 | US7714650 Method and device for performing offset cancellation in an amplifier using floating-gate transistors |
| 05/11/2010 | US7714649 High-efficiency linear amplifier using non linear circuits |
| 05/11/2010 | US7714648 Amplifying system |
| 05/11/2010 | US7714646 Audio power amplifier and a pre-amplifier thereof |
| 05/11/2010 | US7714645 Offset cancellation of a single-ended operational amplifier |
| 05/11/2010 | US7714269 Light receiving circuit |
| 05/11/2010 | US7714266 Method and apparatus for measuring source follower gain in an image sensor array |
| 05/11/2010 | CA2373777C Broadcast transmission system with sampling and correction arrangement for correcting distortion |
| 05/06/2010 | WO2010002570A3 Differential source follower source leader addressable node readout circuit |
| 05/06/2010 | US20100112966 Method and device for controlling power amplification |
| 05/06/2010 | US20100111331 Class d amplifier |
| 05/06/2010 | US20100109785 Amplifier circuit |
| 05/06/2010 | US20100109784 Millimeter wave monolithic integrated circuits and methods of forming such integrated circuits |
| 05/06/2010 | US20100109783 Reconfigurable Amplifier and Filter Using Time-Varying Circuits |
| 05/06/2010 | US20100109782 Fet bias circuit |
| 05/06/2010 | US20100109781 Semiconductor integrated circuit device |
| 05/06/2010 | US20100109780 Flexible Dynamic Range Amplifier |
| 05/06/2010 | US20100109779 Hybrid class ab super follower |
| 05/06/2010 | US20100109777 Amplifying Circuit |
| 05/06/2010 | US20100109776 Millimeter Wave Monolithic Integrated Circuits |
| 05/06/2010 | US20100109775 Semiconductor device having resistors with a biased substrate voltage |
| 05/06/2010 | US20100109774 Operational amplifier |
| 05/06/2010 | US20100109773 Class-D Amplifier |
| 05/06/2010 | US20100109772 Sigma delta class d power amplifier and method thereof |
| 05/06/2010 | US20100109769 Power amplifier |
| 05/06/2010 | US20100109768 Method and apparatus for high performance class d audio amplifiers |
| 05/06/2010 | US20100109767 Digital pulse width modulation for half bridge amplifiers |
| 05/05/2010 | EP2182632A1 Broadband microwave amplifier |
| 05/05/2010 | EP2182631A2 Broadband microwave frequency amplifier cell with variable gain and amplifier comprising such a cell |
| 05/05/2010 | EP1485993B1 R.f. output power control |
| 05/05/2010 | CN201450584U Beautiful sound audio power amplifier |
| 05/05/2010 | CN201450500U Current-to-voltage converter |
| 05/05/2010 | CN201450489U Unidirectional magnifier |
| 05/05/2010 | CN201450488U Power amplification circuit of automobile sound box |
| 05/05/2010 | CN201450311U Temperature control circuit of motor |
| 05/05/2010 | CN1993885B Transimpedance amplifier |
| 05/05/2010 | CN1965472B Method and apparatus for DOHERTY amplifier biasing |
| 05/05/2010 | CN1871745B Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 05/05/2010 | CN1868117B Transconductance circuit |
| 05/05/2010 | CN1765048B Neutralization of feedback capacitance in amplifiers |
| 05/05/2010 | CN1739236B Gain variable voltage/current conversion circuit and filter circuit using the same |
| 05/05/2010 | CN1647396B Transmitter and wireless communication apparatus using the transmitter |
| 05/05/2010 | CN1581697B 传输装置 Transmission device |
| 05/05/2010 | CN1578122B Offset correct method, offset correct circuit and electronic sound volume device |
| 05/05/2010 | CN1531195B Enlarger controlling system for counting improvement of digital controlling signal resolution ratio |
| 05/05/2010 | CN101702620A Anti-interference infrared signal direct current (DC) amplifier |
| 05/05/2010 | CN101702619A Scanning power output device |
| 05/05/2010 | CN101702618A Gain control of radio frequency linear power amplifier |
| 05/05/2010 | CN101057199B Apparatus for filtering a reference voltage and mobile phones comprising such apparatus |
| 05/04/2010 | US7711128 System, circuit, and amplifier for reducing pop sound |
| 05/04/2010 | US7710203 Transformer-capacitor enhancement circuitry for power amplifiers |
| 05/04/2010 | US7710202 Amplifier |
| 05/04/2010 | US7710200 Output buffer and power amplifier comprising thereof |
| 05/04/2010 | US7710199 Method and apparatus for stabilizing RF power amplifiers |
| 05/04/2010 | US7710198 Methods and apparatus for process invariant transconductance |
| 05/04/2010 | US7710197 Low offset envelope detector and method of use |
| 05/04/2010 | US7710185 Tuneable circuit for canceling third order modulation |
| 05/04/2010 | US7710180 Signal offset cancellation |
| 05/04/2010 | US7710166 Semiconductor device and electronic apparatus using the same |
| 05/04/2010 | US7710165 Voltage-to-current converter |
| 05/04/2010 | US7710162 Differential amplifier |
| 04/29/2010 | WO2010048256A1 Headphone amplifier circuit |
| 04/29/2010 | WO2010048233A1 Tunable filter with gain control circuit |
| 04/29/2010 | WO2010048232A1 Tunable filters with lower residual sideband |
| 04/29/2010 | WO2010047991A1 Method and system for amplifying a signal using a transformer matched transistor |
| 04/29/2010 | WO2010047689A1 Amplifier with reduced output transients and method therefor |
| 04/29/2010 | WO2010047631A1 A circuit comprising at least a first transistor group and a second transistor group |
| 04/29/2010 | WO2010045984A1 Cascode amplifier with increased linearity |
| 04/29/2010 | US20100104043 Power amplifier |
| 04/29/2010 | US20100103043 Phased shifted oscilator and antenna |
| 04/29/2010 | US20100103015 Differential amplifier circuit amplifying differential signals with selectively switching between differential signals and ad converter apparatus |
| 04/29/2010 | US20100102886 Amplifier device |
| 04/29/2010 | US20100102885 Method And System For Amplifying A Signal Using A Transformer Matched Transistor |
| 04/29/2010 | US20100102884 Driver circuit and driver ic |