Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers
More topics under "H03F - Amplifiers" (75,569)
H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
H03F 11 - Dielectric amplifiers (13)
H03F 13 - Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier (58)
H03F 15 - Amplifiers using galvano-magnetic effects not involving mechanical movement, e.g. using hall effect (44)
H03F 17 - Amplifiers using electroluminescent element or photocell (53)
H03F 19 - Amplifiers using superconductivity effects (51)
H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
H03F 5 - Amplifiers with both discharge tubes and semiconductor devices as amplifying elements (49)
H03F 7 - Parametric amplifiers (152)
H03F 9 - Magnetic amplifiers (57)
H03F 99 - Subject matter not provided for in other groups of this subclass (812)
Patents for H03F - Amplifiers (176)
09/2014
09/25/2014US20140286360 Method and system for transmitting signals with reduced spurious emissions
08/2013
08/27/2013CA2533498C Modulated triangular wave amplifier
08/2012
08/09/2012US20120201330 Method and system for transmitting signals with reduced spurious emissions
05/2012
05/22/2012US8184678 Method and system for transmitting signals with reduced spurious emissions
04/2012
04/11/2012EP1695438B1 Amplifier linearization using non-linear predistortion
10/2011
10/05/2011EP2372903A1 Method and apparatus for aligning feed forward loops
04/2011
04/27/2011EP1794879B1 Tunable predistorter
03/2011
03/03/2011US20110050338 Modulated Triangular Wave Amplifier
03/01/2011CA2503532C Estimating the operating point on a nonlinear traveling wave tube amplifier
12/2010
12/08/2010CN101164229B High linearity doherty communication amplifier with bias control
11/2010
11/03/2010EP1671418B1 Composite power amplifier
06/2010
06/15/2010US7739522 Efficient power supply for rapidly changing power requirements
05/2010
05/26/2010CN101036289B Analog predistorter and its regulation method and method for compensating signal change
05/05/2010CN1871745B Method and apparatus providing integrated load matching using adaptive power amplifier compensation
04/2010
04/28/2010CN1627741B Coherent averaging for measuring traveling wave tube amplifier nonlinearity
03/2010
03/17/2010EP1563601B1 Estimating the operating point on a nonlinear traveling wave tube amplifier
12/2009
12/22/2009CA2484313C Coherent averaging for measuring traveling wave tube amplifier nonlinearity
12/02/2009CN100566133C Equipment and method for amplifying input signal with input signal power
11/2009
11/17/2009US7619467 Modulated triangular wave amplifier
11/04/2009EP1364456B1 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
08/2009
08/12/2009EP1673857B1 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
07/2009
07/29/2009CN100521510C Cascode cmos RF power amplifier with isolated trnasistors
05/2009
05/27/2009CN100492894C Circuit for parallel operation of doherty amplifiers
05/26/2009US7539269 Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers
04/2009
04/29/2009CN100483930C Load-invariant amplifier
04/14/2009US7518454 Operational amplifier selecting one of inputs, and an amplifying apparatus using the OP amplifier the verification method
03/2009
03/31/2009US7512386 Method and apparatus providing integrated load matching using adaptive power amplifier compensation
02/2009
02/26/2009US20090052572 Method and System for Transmitting Signals with Reduced Spurious Emissions
12/2008
12/24/2008EP1673857A4 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
12/17/2008EP1673856A4 Method for aligning feed forward loops
10/2008
10/28/2008US7444252 Linearizer circuit
09/2008
09/18/2008US20080224772 Operational Amplifier Selecting One of Inputs, and an Amplifying Apparatus Using the Op Amplifier the Verification Method
09/02/2008US7420416 Tunable predistorter
08/2008
08/12/2008US7411449 Composite power amplifier
08/05/2008US7409010 Method and system for transmitting signals with reduced spurious emissions
07/2008
07/31/2008US20080180167 Modulated triangular wave amplifier
05/2008
05/07/2008EP1665519A4 Method and apparatus providing integrated load matching using adaptive power amplifier compensation
05/06/2008US7368992 Load-invariant amplifier
04/2008
04/16/2008CN101164229A High linearity doherty communication amplifier with bias control
04/02/2008EP1723717A4 Inductor-based current sensing
02/2008
02/19/2008US7332959 Modulated triangular wave amplifier
02/12/2008US7330517 Amplifier linearization using non-linear predistortion
01/2008
01/24/2008US20080018398 Tunable Predistorter
01/22/2008US7321262 Power conversion system
09/2007
09/12/2007CN101036289A Tunable predistorter
08/2007
08/28/2007US7262656 Circuit for parallel operation of Doherty amplifiers
07/2007
07/19/2007US20070164821 Load-invariant amplifier
07/18/2007EP1695438A4 Amplifier linearization using non-linear predistortion
06/2007
06/26/2007US7235962 Inductor-based current sensing
06/13/2007EP1794879A1 Tunable predistorter
06/12/2007US7230480 Estimating the operating point on a non-linear traveling wave tube amplifier
06/06/2007EP1609242A4 High speed track and hold amplifier for direct digital down-conversion
05/2007
05/17/2007US20070109044 Power conversion system
05/03/2007US20070098109 Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers
05/02/2007CN1957526A Amplifier linearization using non-linear predistortion
04/2007
04/12/2007US20070080747 Composite power amplifier
04/05/2007US20070075784 Radio frequency power amplifier
03/2007
03/08/2007US20070052477 Efficient power supply for rapidily changing power requirements
02/2007
02/21/2007CN1918787A Load-invariant amplifier
02/21/2007CN1918786A Cascode cmos RF power amplifier with isolated trnasistors
02/20/2007US7180366 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
01/2007
01/10/2007CN1893258A Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
01/04/2007WO2005050828A3 Inductor-based current sensing
12/2006
12/27/2006CN1886891A Method for aligning feed forward loops
12/14/2006WO2006033622A8 Tunable predistorter
11/2006
11/29/2006CN1871745A Method and apparatus providing integrated load matching using adaptive power amplifier compensation
11/22/2006EP1723717A2 Inductor-based current sensing
11/21/2006US7138864 Overcurrent protection in amplifier topologies employing DC isolation
11/16/2006US20060255780 Linearizer circuit
11/15/2006EP1722211A2 Linearizer circuit for a capacitive pressure sensor
11/15/2006CN1864324A 功率转换系统 Power conversion system
11/02/2006WO2005050829A3 Overcurrent protection in amplifier topologies employing dc isolation
11/02/2006US20060244522 Modulated triangular wave amplifier
11/02/2006EP1716637A1 Load-invariant amplifier
10/2006
10/25/2006EP1714382A1 Cascode cmos rf power amplifier with isolated transistors
10/24/2006US7126421 Method for aligning feed forward loops
10/19/2006DE112004002206T5 Operationsverstärker zum Selektieren eines Eingangssignals und den Operationsverstärker verwendende Verstärkungsvorrichtung für das Verifikationsverfahren Operational amplifier for selecting an input signal and the operational amplifiers used for amplifying apparatus, the verification procedure
10/19/2006DE112004001976T5 Hochlinearität-Doherty-Kommunikationsverstärker mit Vorspannungssteuerung High linearity Doherty amplifier with bias control communication
09/2006
09/20/2006EP1649595A4 Modulated triangular wave amplifier
08/2006
08/30/2006EP1695438A2 Amplifier linearization using non-linear predistortion
07/2006
07/19/2006EP1680863A1 Efficient power supply for rapidily changing power requirements
07/13/2006WO2005050827A3 Amplifier linearization using non-linear predistortion
07/12/2006CN1264274C Amplication systems and methods using fixed and modulated power supply voltages and buck-boost control
06/2006
06/28/2006EP1673857A2 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
06/28/2006EP1673856A2 Method for aligning feed forward loops
06/21/2006EP1671420A2 Power conversion system
06/21/2006EP1671418A1 Composite power amplifier
06/08/2006US20060119427 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
06/07/2006EP1665519A2 Method and apparatus providing integrated load matching using adaptive power amplifier compensation
05/2006
05/17/2006EP1563601A4 Estimating the operating point on a nonlinear traveling wave tube amplifier
04/2006
04/26/2006EP1649595A2 Modulated triangular wave amplifier
04/13/2006WO2005022740A3 Method and apparatus providing integrated load matching using adaptive power amplifier compensation
03/2006
03/30/2006WO2006033622A1 Tunable predistorter
03/14/2006US7012452 High voltage high speed amplifier using floating high side structure
03/07/2006US7010284 Wireless communications device including power detector circuit coupled to sample signal at interior node of amplifier
03/02/2006US20060044060 Circuit for parallel operation of Doherty amplifiers
03/01/2006CN1741373A Circuit for parallel operation of doherty amplifiers
02/2006
02/21/2006US7002408 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
02/02/2006US20060022747 Estimating the operating point on a non-linear traveling wave tube amplifier
01/2006
01/31/2006US6992526 Apparatus and method for DC offset reduction
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