| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 12/10/2008 | CN100442656C Low-noise amplifier |
| 12/09/2008 | US7463873 Wireless communications device having type-II all-digital phase-locked loop (PLL) |
| 12/09/2008 | US7463869 Low noise high isolation transmit buffer gain control mechanism |
| 12/09/2008 | US7463868 Adaptive radio transceiver with offset PLL with subsampling mixers |
| 12/09/2008 | US7463742 Signal output circuit |
| 12/09/2008 | US7463088 PWM digital amplifier with high-order loop filter |
| 12/09/2008 | US7463087 Operational amplifier with zero offset |
| 12/04/2008 | WO2008148094A1 Micropower neural amplifier with adaptive input-referred noise |
| 12/04/2008 | WO2008147908A1 A multi-antenna beam-forming system for transmitting constant envelope signals decomposed from a variable envelope signal |
| 12/04/2008 | WO2008147675A1 Systems, apparatus, and methods for performing digital pre-distortion with feedback signal adjustment |
| 12/04/2008 | WO2008146355A1 Distortion compensator |
| 12/04/2008 | WO2008146354A1 Power amplifier |
| 12/04/2008 | WO2008145604A1 Configurable, variable gain lna for multi-band rf receiver |
| 12/04/2008 | US20080299914 Electronic component for communication device and semiconductor device for switching transmission and reception |
| 12/04/2008 | US20080297262 Increased gain high-frequency amplifier |
| 12/04/2008 | US20080297260 Radio-frequency power amplifier |
| 12/04/2008 | US20080297247 Method and apparatus for distortion correction of RF amplifiers |
| 12/04/2008 | US20080297243 Linear programmable switch-capacitance gain amplifier |
| 12/03/2008 | EP1998592A1 Audio circuit |
| 12/03/2008 | EP1998456A2 Transmission device |
| 12/03/2008 | EP1998439A1 Analog circuit |
| 12/03/2008 | EP1998437A1 Matching circuit |
| 12/03/2008 | EP1998436A1 Method and device for at least partially compensating nonlinear effects of a system and communication system comprising such device |
| 12/03/2008 | EP1997222A2 Enhanced efficiency feed foward power amplifier with delay mismatched error cancellation loop |
| 12/03/2008 | EP1702405B1 Single chip power amplifier and envelope modulator |
| 12/03/2008 | CN101317327A Amplifier |
| 12/03/2008 | CN101316250A Digital predistortion apparatus and method for multi-antenna system |
| 12/03/2008 | CN101316095A Gain-controllable wide-band low-noise amplifier |
| 12/03/2008 | CN100440728C Integrated power amplifier |
| 12/03/2008 | CN100440727C Distortion compensation device |
| 12/03/2008 | CN100440726C Band domain intragroup delayed flat circuit and distortion compensation amplifier |
| 12/03/2008 | CN100440725C Power amplifiers |
| 12/03/2008 | CN100440619C Active broad-band reception antenna with reception level regulation |
| 12/03/2008 | CN100440096C Switching regulator control circuit, switching regulator and switching regulator control method |
| 12/02/2008 | US7460613 Digital linearization circuit |
| 12/02/2008 | US7459980 Apparatus for receiver equalization |
| 12/02/2008 | US7459974 System and method for distortion cancellation in amplifiers |
| 12/02/2008 | US7459972 Amplifiers with compensation |
| 12/02/2008 | US7459971 Amplifier circuit |
| 12/02/2008 | US7459970 Method and apparatus for optimizing power dissipation in a low noise amplifier |
| 12/02/2008 | US7459969 Transmitter power amplifier working at different power supplies |
| 12/02/2008 | US7459967 Differential amplifier, digital-to-analog converter and display device |
| 12/02/2008 | US7459966 Offset adjusting circuit and operational amplifier circuit |
| 11/27/2008 | WO2008144593A2 Enhanced cascode performance by reduced impact ionization |
| 11/27/2008 | WO2008143174A1 Wide-range low-noise amplifier |
| 11/27/2008 | WO2008143124A1 Amplifier |
| 11/27/2008 | WO2008142051A2 Switchable multiband lna design |
| 11/27/2008 | WO2008107210A3 Electronic circuit for the transmission of high-frequency signals |
| 11/27/2008 | US20080290952 Dvd Reading Apparatus |
| 11/27/2008 | US20080290949 Apparatus and method for asymmetric charge pump for an audio amplifier |
| 11/27/2008 | US20080290946 Semiconductor integrated circuit device |
| 11/27/2008 | US20080290939 Method and apparatus for distortion correction of RF amplifiers |
| 11/26/2008 | EP1995872A1 Load impedance testing circuit |
| 11/26/2008 | EP1384312B1 Tunable voltage controlled oscillator |
| 11/26/2008 | CN100438546C Driver circuit for subscriber terminals |
| 11/26/2008 | CN100438331C Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals |
| 11/26/2008 | CN100438330C Band gap reference circuit |
| 11/26/2008 | CN100438329C Efficiency of power amplifier |
| 11/25/2008 | US7457595 Power saving in a transmitter |
| 11/25/2008 | US7456692 Gain variable amplifier |
| 11/25/2008 | US7456691 Amplifier circuit with reduced temperature dependence of the gain |
| 11/25/2008 | US7456688 Signal extraction circuit and distortion-compensated amplifier incorporating the same |
| 11/25/2008 | US7456684 Dual-chopper amplifier and its usage as readout circuit for capacitive sensors |
| 11/20/2008 | WO2008140730A1 Linear rf amplifier with polar feedback |
| 11/20/2008 | WO2007149257A3 Control of an adjustable gain amplifier |
| 11/20/2008 | WO2004105231A3 Smart linearized power amplifier and related systems and methods |
| 11/20/2008 | US20080287838 Switched Resonant Ultrasonic Power Amplifier System |
| 11/20/2008 | US20080287791 Switched Resonant Ultrasonic Power Amplifier System |
| 11/20/2008 | US20080284521 Electronic Signal Processor |
| 11/20/2008 | US20080284520 System And Method For Power Detection In A Power Amplifier |
| 11/20/2008 | US20080284517 Variable Gain Amplifier |
| 11/20/2008 | US20080284516 Monolithic Lna Support Ic |
| 11/20/2008 | US20080284507 Autozeroing current feedback instrumentation amplifier |
| 11/20/2008 | US20080284506 System and method for controlling an electromagnetic field generator |
| 11/20/2008 | US20080284490 Compensated operational amplifier and active RC filter including such an amplifier |
| 11/19/2008 | EP1993203A1 Overdrive control system |
| 11/19/2008 | EP1993202A1 Compensated operational amplifier and active RC filter including such an amplifier |
| 11/19/2008 | EP1993201A1 Switchable multiband LNA design |
| 11/19/2008 | EP1993200A1 Power amplifier with controlled output power |
| 11/19/2008 | EP1992066A1 Apparatus for and method of biasing a transistor |
| 11/19/2008 | EP1683268B1 Power level controlling of first amplification stage for an integrated rf power amplifier |
| 11/19/2008 | EP1639702B1 Self-oscillating power circuit |
| 11/19/2008 | CN101309075A Transconductor and mixer with high linearity |
| 11/19/2008 | CN101309072A Compensated operational amplifier and active rc filter including such an amplifier |
| 11/19/2008 | CN101309071A Apparatus for inhibiting transient noise of audio power amplifier |
| 11/19/2008 | CN101309070A 运算放大器及其动态电流供应电路 Operational amplifier and its dynamic current supply circuit |
| 11/19/2008 | CN100435479C Transistor assembly |
| 11/19/2008 | CN100435060C Band-gap reference circuit |
| 11/18/2008 | US7454226 Communication terminal |
| 11/18/2008 | US7453952 Predistortion circuit for a transmit system |
| 11/18/2008 | US7453945 Methods and devices for controlling RF, multi-carrier amplifier signal power |
| 11/18/2008 | US7453927 Method and apparatus to compensate AM-PM delay mismatch in envelope restoration transmitter |
| 11/18/2008 | US7453321 Amplifier arrangement and method of signal amplification |
| 11/18/2008 | US7453320 Amplifier |
| 11/13/2008 | WO2008137229A1 System and method for performing baseband phase shifting in a cartesian feedback system |
| 11/13/2008 | WO2008136080A1 Amplifier apparatus |
| 11/13/2008 | WO2008135753A1 Multiport amplifiers in communications satellites |
| 11/13/2008 | WO2008135637A1 Power supplies for rf power amplifier |
| 11/13/2008 | WO2008135519A1 A device |
| 11/13/2008 | US20080280578 Receiver circuit and amplifier circuit |