| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 06/11/2008 | EP1931027A1 Variable gain amplifier and its control method |
| 06/11/2008 | EP1929639A1 Multistage resonant amplifier system and method |
| 06/11/2008 | EP1869777A4 Radio frequency power amplifier and corresponding method |
| 06/11/2008 | CN101199112A Feed forward amplifier system and method using the pilot frequency from a positive feedback pilot generation and detection circuit to improve second loop convergence |
| 06/11/2008 | CN101197558A Feed-forward amplifier |
| 06/11/2008 | CN101197557A Audio power amplifier |
| 06/11/2008 | CN101197556A Tunable narrowband low-noise amplifier adopting active inductive load |
| 06/11/2008 | CN100394697C Receiver including linearity compensation in the receive band |
| 06/11/2008 | CN100394345C Voltage generator and method for generating stabilized voltage |
| 06/10/2008 | US7386287 Method for controlling the gain of radio-frequency signal |
| 06/10/2008 | US7385458 System method and apparatus for a three-line balun with power amplifier bias |
| 06/10/2008 | US7385447 Power amplifier having curve-fitting predistorter |
| 06/10/2008 | US7385446 High-impedance level-shifting amplifier capable of handling input signals with a voltage magnitude that exceeds a supply voltage |
| 06/10/2008 | US7385445 High efficiency amplifier circuits having bypass paths |
| 06/10/2008 | US7385443 Chopper-stabilized instrumentation amplifier |
| 06/10/2008 | US7385442 System and method for constant bandwidth DC offset correction in an amplifier |
| 06/10/2008 | US7385170 Ambient light suppression circuit for photodiode receiver applications |
| 06/05/2008 | WO2008067420A1 Short circuit protection circuit |
| 06/05/2008 | WO2008064924A1 Current comsumption reduction with low power amplifier |
| 06/05/2008 | WO2007142414A8 Doherty power amplifier |
| 06/05/2008 | US20080133183 Multi-Step Non-Linear Time-Discrete Processing |
| 06/05/2008 | US20080129386 Radio frequency modulator and methods thereof |
| 06/05/2008 | US20080129385 High-frequency amplification circuit |
| 06/05/2008 | US20080129379 System and method for digitally correcting a non-linear element |
| 06/05/2008 | US20080129375 Power Supply Compensation |
| 06/05/2008 | DE102007055533A1 Power amplifier for use in wireless communication system, has amplification stages for amplifying and outputting high frequency signals, and transmission lines of line transformer connected with ground connection over output resistor |
| 06/04/2008 | EP1927174A2 Esd protection circuits |
| 06/04/2008 | EP1926427A2 A device and method for detecting an epileptic event |
| 06/04/2008 | EP1685646B1 Variable supply amplifier system |
| 06/04/2008 | CN101194431A By-pass arrangement of a low noise amplifier |
| 06/03/2008 | US7383023 Communication apparatus |
| 06/03/2008 | US7382887 Method and device for reducing high frequency error components of a multi-channel modulator |
| 06/03/2008 | US7382835 Power booster using peak suppression and pre-distortion for terminal radios |
| 06/03/2008 | US7382834 Phase rotation estimation |
| 06/03/2008 | US7382200 Type-II all-digital phase-locked loop (PLL) |
| 06/03/2008 | US7382193 Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase |
| 06/03/2008 | US7382187 Semiconductor integrated circuit and amplifier for suppressing pop sound while minimizing voltage transition settling time |
| 06/03/2008 | US7382183 Minimizing switching noise and its effects in auto-zeroed amplifiers |
| 06/03/2008 | US7382174 A-AB transconductor |
| 05/29/2008 | WO2008062412A1 Method and apparatus for automatically controlling an xnn enhancement circuitry feeding a power amplifier |
| 05/29/2008 | WO2008062371A2 Integrated doherty type amplifier arrangement with high power efficiency |
| 05/29/2008 | WO2008024666A3 Method and apparatus for controlling a selectable voltage audio power output stage |
| 05/28/2008 | EP1647091B1 Low-consumption voltage amplifier |
| 05/28/2008 | EP1518329B1 Blind cancellation of cross-modulation by addition of modulated signal |
| 05/28/2008 | EP1250752B1 Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels |
| 05/28/2008 | CN201066835Y Digital multimedia sound amplification circuit |
| 05/28/2008 | CN101189792A Distortion compensator |
| 05/28/2008 | CN101188406A Low frequency analog circuit design method and its low frequency analog circuit |
| 05/28/2008 | CN101188405A Float restraint amplification circuit in sensor network |
| 05/28/2008 | CN101188404A Power amplifier using power synthesizer. |
| 05/28/2008 | CN101188403A Audio amplification device with adjustable power consumption |
| 05/28/2008 | CN100391132C Method and arragnement for digital transmission using AM emitters |
| 05/28/2008 | CN100391115C Electronic equipment with power amplifier |
| 05/28/2008 | CN100391101C Limiting amplifier for PSD photoelectric signal |
| 05/27/2008 | US7379851 CDMA signal waveform quality display system, method, and program, and storage medium storing the program |
| 05/27/2008 | US7379725 LNA gain adjustment in an RF receiver to compensate for intermodulation interference |
| 05/27/2008 | US7379715 Transmitter apparatus and method using polar modulation with signal timing adjustment |
| 05/27/2008 | US7378912 Cascode connection circuit |
| 05/27/2008 | US7378906 Method and apparatus for performing digital pre-distortion |
| 05/27/2008 | US7378903 System and method for minimizing DC offset in outputs of audio power amplifiers |
| 05/22/2008 | WO2008032264A3 Amplifier architecture for polar modulation |
| 05/22/2008 | WO2008024665A3 Energy-efficient consumer device audio power output stage |
| 05/22/2008 | WO2007019281A9 Origami cascaded topology for analog and mixed-signal applications |
| 05/22/2008 | US20080119153 Multiband Wireless Device and Semiconductor Integrated Circuit |
| 05/21/2008 | EP1924042A1 Transmitter |
| 05/21/2008 | EP1923992A1 Multi-octave differential upconverter |
| 05/21/2008 | EP1690336A4 Input/output signals preserver circuit of amplification circuits |
| 05/21/2008 | EP1606875B1 Systems and methods for protection of audio amplifier circuits |
| 05/21/2008 | DE202007000891U1 Verstärker-Schaltungsanordnung mit integrierter Testschaltung Amplifier circuit with integrated test circuit |
| 05/21/2008 | CN201063800Y RF power amplifier device and hand-held terminal device |
| 05/21/2008 | CN201063587Y TDD RF high power LDMOS amplifier gate voltage control circuit |
| 05/21/2008 | CN101184070A Hundred mega broadband digital predistortion power amplifier device and method |
| 05/21/2008 | CN101183854A Amplifier |
| 05/20/2008 | US7375588 Transmission amplifier |
| 05/20/2008 | US7375584 Gain adjustment method, gain adjustment circuit, and optical disc device having same gain adjustment circuit |
| 05/15/2008 | US20080111623 Input signal power control |
| 05/15/2008 | US20080111618 DC offset cancellation circuit |
| 05/15/2008 | DE10336881B4 Hochfrequenzanregungsanordnung mit einer Begrenzungsschaltung High-frequency excitation system with a limiting circuit |
| 05/14/2008 | EP1921745A1 Shared linearity maintenance in power amplifiers |
| 05/14/2008 | EP1797639B1 Arbitrary waveform predistortion table generation |
| 05/14/2008 | EP1698050A4 Gate control circuit with soft start/stop function |
| 05/14/2008 | EP1554799B1 High frequency amplifier in an integrated circuit |
| 05/14/2008 | CN101180792A Integrated doherty type amplifier arrangement with high power efficiency |
| 05/14/2008 | CN101179257A High-frequency power amplifier improved in size and cost |
| 05/14/2008 | CN101178371A Electronic gun power supply for reflected high energy electron diffraction instrument |
| 05/14/2008 | CN100388623C Parallel distortion signal generator and power amplifier applied circuit thereof |
| 05/14/2008 | CN100388492C Semiconductor integrated circuit for controlling output impedance and conversion speed |
| 05/13/2008 | US7372918 Transmission device with adaptive digital predistortion, transceiver with transmission device, and method for operating a transmission device |
| 05/13/2008 | US7372333 Monolithic supply-modulated RF power amplifier and DC-DC power converter IC |
| 05/13/2008 | US7372332 Optimizing power consumption in amplifiers |
| 05/13/2008 | US7372327 Input structure for a power amplifier and associated methods |
| 05/13/2008 | US7372326 Radio frequency parallel amplifier |
| 05/13/2008 | US7372325 Mute circuit |
| 05/08/2008 | WO2008054766A2 System and method for pre-charging a current mirror |
| 05/08/2008 | WO2008054275A1 Dynamic range improvements of load modulated amplifiers |
| 05/08/2008 | WO2008053857A1 Amplification device |
| 05/08/2008 | WO2008053535A1 Distortion compensating circuit |
| 05/08/2008 | WO2008053534A1 Doherty amplifier |
| 05/08/2008 | US20080107216 By-pass arrangement of a low noise amplifier |
| 05/08/2008 | US20080106333 Method and System for out of Band Predistortion Linearization |