Patents
Patents for H03F - Amplifiers (176)
01/2006
01/24/2006US6989712 Accurate power detection for a multi-stage amplifier
12/2005
12/28/2005EP1609242A2 High speed track and hold amplifier for direct digital down-conversion
12/15/2005WO2005039039A3 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
12/01/2005WO2005053150A3 An operational amplifier selecting one of inputs, and an amplifying apparatus using the op amplifier the verification method
10/2005
10/20/2005WO2004066487A3 High speed track and hold amplifier for direct digital down-conversion
10/05/2005EP1583228A2 Composite power amplifier
09/2005
09/22/2005WO2005088829A1 Apparatus and method for dc offset reduction
09/09/2005WO2005043747A3 High linearity doherty communication amplifier with bias control
09/08/2005US20050195024 Apparatus and method for DC offset reduction
09/01/2005WO2005020431A3 High voltage high speed amplifier using floating high side structure
08/2005
08/25/2005WO2005078918A1 Load-invariant amplifier
08/25/2005CA2555960A1 Load-invariant amplifier
08/18/2005WO2005076465A1 Cascode cmos rf power amplifier with isolated trnasistors
08/17/2005EP1563601A2 Estimating the operating point on a nonlinear traveling wave tube amplifier
06/2005
06/16/2005WO2005036731A3 Power conversion system
06/15/2005CN1627741A Coherent averaging for measuring traveling wave tube amplifier nonlinearity
06/09/2005WO2005053150A2 An operational amplifier selecting one of inputs, and an amplifying apparatus using the op amplifier the verification method
06/09/2005WO2005015732A3 Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers
06/09/2005US20050122168 Overcurrent protection in amplifier topologies employing DC isolation
06/02/2005WO2005050829A2 Overcurrent protection in amplifier topologies employing dc isolation
06/02/2005WO2005050828A2 Inductor-based current sensing
06/02/2005WO2005050827A2 Amplifier linearization using non-linear predistortion
06/02/2005US20050116699 Inductor-based current sensing
05/2005
05/26/2005WO2005034338A3 Method for aligning feed forward loops
05/26/2005US20050111575 Amplifier linearization using non-linear predistortion
05/12/2005WO2005043747A2 High linearity doherty communication amplifier with bias control
05/06/2005WO2005041404A1 Efficient power supply for rapidily changing power requirements
05/06/2005WO2004112235A3 Method and system for transmitting signals with reduced spurious emissions
05/03/2005US6888382 High speed track and hold amplifier for direct digital down-conversion
04/2005
04/28/2005WO2005039039A2 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
04/21/2005WO2005036731A2 Power conversion system
04/21/2005US20050083120 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range
04/14/2005WO2005034338A2 Method for aligning feed forward loops
04/14/2005US20050077928 High voltage high speed amplifier using floating high side structure
04/14/2005CA2540127A1 Method for aligning feed forward loops
04/13/2005EP1523103A1 Coherent averaging for measuring traveling wave tube amplifier nonlinearity
04/07/2005WO2005031966A1 Composite power amplifier
03/2005
03/31/2005WO2005011105A3 Modulated triangular wave amplifier
03/24/2005US20050062532 Method for aligning feed forward loops
03/17/2005US20050059362 Method and apparatus providing integrated load matching using adaptive power amplifier compensation
03/10/2005WO2005022740A2 Method and apparatus providing integrated load matching using adaptive power amplifier compensation
03/03/2005WO2005020431A2 High voltage high speed amplifier using floating high side structure
02/2005
02/17/2005WO2005015732A2 Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers
02/03/2005WO2005011105A2 Modulated triangular wave amplifier
02/03/2005CA2533498A1 Modulated triangular wave amplifier
01/2005
01/06/2005US20050002469 Envelope elimination and restoration device
12/2004
12/23/2004WO2004112235A2 Method and system for transmitting signals with reduced spurious emissions
12/16/2004US20040252786 Method and system for transmitting signals with reduced spurious emissions
10/2004
10/07/2004WO2004045065A3 Accurate power detection for a multi-stage amplifier
09/2004
09/09/2004US20040174214 Accurate power detection for a multi-stage amplifier
08/2004
08/05/2004WO2004066487A2 High speed track and hold amplifier for direct digital down-conversion
06/2004
06/24/2004US20040119508 High speed track and hold amplifier for direct digital down-conversion
05/2004
05/27/2004WO2004045065A2 Accurate power detection for a multi-stage amplifier
05/06/2004US20040085126 Accurate power detection for a multi-stage amplifier
04/2004
04/28/2004CN1493106A Amplication systems and methods usnig fixed and modulated power supply voltages and buck-boost control
11/2003
11/26/2003EP1364456A2 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
09/2003
09/04/2003WO2002015387A3 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
07/2003
07/30/2003CN1116735C Hybrid Chireix/Doherty amplifiers power waveform synthesis
05/2003
05/28/2003EP1068666B1 Hybrid chireix/doherty amplifiers power waveform synthesis
03/2003
03/04/2003US6529075 Amplifier with suppression of harmonics
04/2002
04/11/2002US20020041212 Amplifier with suppression of harmonics
04/09/2002US6369651 Bidirectional direct current power conversion circuits and methods
02/2002
02/21/2002WO2002015387A2 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
10/2001
10/18/2001US20010030581 Bidirectional direct current power conversion circuits and methods
09/2001
09/04/2001US6285251 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
05/2001
05/23/2001CN1296663A Hybrid chireix/doherty amplifiers power waveform synthesis
01/2001
01/17/2001EP1068666A1 Hybrid chireix/doherty amplifiers power waveform synthesis
01/16/2001US6175226 Differential amplifier with common-mode regulating circuit
10/1999
10/14/1999WO1999052206A1 Hybrid chireix/doherty amplifiers power waveform synthesis
09/1991
09/04/1991EP0275283B1 Low noise preamplification stage
11/1988
11/22/1988US4786809 Circuit for interfacing signals from a sensor
02/1988
02/11/1988WO1988001124A1 Low noise preamplification stage
01/1988
01/20/1988EP0252981A1 Gate modulated transimpedance amplifier with buffering for focal plane array
07/1987
07/02/1987WO1987004026A1 Gate modulated transimpedance amplifier with buffering for focal plane array
01/1977
01/18/1977US4004242 Apparatus for supplying symmetrically limited bidirectional signal currents
06/1976
06/29/1976US3967207 Amplifier with over-current protection
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