ClassID:

220045

H03F2203/45481 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by; Indexing scheme relating to differential amplifiers the CSC comprising only a direct connection to the supply voltage, no other components being present

Recent Application in this class:
#1
20190363684
2019-11-28

AMPLIFYING SIGNALS USING POSITIVE ENVELOPE FEEDBACK

#2
20190319597
2019-10-17

Active device which has a high breakdown voltage, is memory-less, traps even harmonic signals and circuits used therewith

#3
20190165741
2019-05-30

Wireless receiver and wireless reception method

#4
20190097586
2019-03-28

Mixed-signal power amplifier and transmission systems and methods

#5
20190006998
2019-01-03

Amplifier arrangement and switched capacitor integrator

#6
20180294811
2018-10-11

Operational amplifier, driving interface, measurement and control device, driving circuit and driver

#7
20180287564
2018-10-04

Modulated supply amplifier with adjustable input parameter configuration

#8
20180262172
2018-09-13

Active device which has a high breakdown voltage, is memory-less, traps even harmonic signals and circuits used therewith

#9
20180198424
2018-07-12

Amplifier architecture using positive envelope feedback

#10
20180069514
2018-03-08

Low voltage high speed CMOS line driver without tail current source

#11
20180019711
2018-01-18

Mixed-signal power amplifier and transmission systems and methods

#12
20170085237
2017-03-23

Active device which has a high breakdown voltage, is memory-less, traps even harmonic signals and circuits used therewith

#13
20170085226
2017-03-23

Active device and circuits used therewith

#14
20170040957
2017-02-09

Power amplifier having stack structure

#15
20160344086
2016-11-24

0/90 degree coupler with complex termination

#16
20160197582
2016-07-07

Memoryless common-mode insensitive and low pulling VCO

#17
20160112016
2016-04-21

Silicon photonics modulator driver

#18
20160087632
2016-03-24

Current amplifier and transmitter using the same

#19
20160056769
2016-02-25

Power amplification module

#20
20160043697
2016-02-11

Front-end matching amplifier

#21
20160020739
2016-01-21

Active device which has a high breakdown voltage, is memory-less, traps even harmonic signals and circuits used therewith

#22
20150349732
2015-12-03

Common-source power amplifiers

#23
20150341004
2015-11-26

Differential amplification circuit

#24
20150295551
2015-10-15

Implicit feed-forward compensated op-amp with split pairs

#25
20150255848
2015-09-10

Device for coupling RF power into a waveguide

#26
20150171804
2015-06-18

Power amplifier having stack structure

#27
20150137887
2015-05-21

Rail-to-rail line driver using differential cascode bootstraping

#28
20150061775
2015-03-05

Wideband amplifier

#29
20150048884
2015-02-19

Amplifier circuits

#30
20140354359
2014-12-04

High-frequency signal processing device

#31
20140266443
2014-09-18

High-frequency, broadband amplifier circuit

#32
20140232462
2014-08-21

Power amplifier using differential structure

#33
20140079096
2014-03-20

Power amplifier with supply switching

#34
20140035673
2014-02-06

Multimode differential amplifier biasing system

#35
20140035669
2014-02-06

Differential stacked output stage for power amplifiers

#36
20130324062
2013-12-05

Power detector with temperature compensation

#37
20130300502
2013-11-14

Variable-gain low noise amplifier

#38
20130195289
2013-08-01

Power amplifying apparatus and audio system

#39
20130187620
2013-07-25

Power efficient transconductance amplifier apparatus and systems

#40
20130181771
2013-07-18

LIGHT RECEIVING CIRCUIT AND PHOTO-COUPLING TYPE INSULATED CIRCUIT

#41
20130154745
2013-06-20

Clipping circuit, differential amplifying circuit, and amplifying circuit

#42
20130113569
2013-05-09

Cross-coupled multipath feedforward operational amplifiers

#43
20130093494
2013-04-18

Differential current buffer

#44
20130070365
2013-03-21

Current sensor comprising differential amplifier biased by leakage current

#45
20130057350
2013-03-07

Apparatus and method for low noise amplification

#46
20130043955
2013-02-21

Signal amplification circuits for receiving/transmitting signals according to input signal

#47
20130009704
2013-01-10

Transceiver and integrated circuit

#48
20120313705
2012-12-13

Method for introducing feedback in a FET amplifier

#49
20120299659
2012-11-29

Efficiency improvement of doherty power amplifier using supply switching and digitally controlled gate bias modulation of peaking amplifier

#50
20120293260
2012-11-22

Low-offset current-sense amplifier and operating method thereof

#51
20120286839
2012-11-15

Systems and methods for a continuous, linear, 360-degree analog phase shifter

#52
20120274408
2012-11-01

SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

#53
20120264391
2012-10-18

RF-demodulator, calibration circuitry and methods for calibrating an RF-demodulator

#54
20120235746
2012-09-20

Amplifier

#55
20120176197
2012-07-12

RF power amplifier

#56
20120146724
2012-06-14

Low-noise amplifier

#57
20120112835
2012-05-10

Transformer coupled distributed amplifier

#58
20120098606
2012-04-26

High-frequency signal processing device

#59
20120068769
2012-03-22

High-frequency differential amplifier circuit

#60
20120063545
2012-03-15

Method and system for enhancing efficiency by modulating power amplifier gain

#61
20120056681
2012-03-08

Signal amplification circuits for receiving/transmitting signals according to input signal

#62
20120013417
2012-01-19

Center-tapped inductor balun

#63
20120013404
2012-01-19

Method and apparatus for broadband input matching with noise and non-linearity cancellation in power amplifiers

#64
20120007676
2012-01-12

Drive amplifier

#65
20120007675
2012-01-12

Power amplifier

#66
20120002770
2012-01-05

Second-order distortion correcting receiver and second-order distortion correcting method

#67
20120001675
2012-01-05

Transconductance amplifier

#68
20110248782
2011-10-13

RF power amplifier

#69
20110193632
2011-08-11

Semiconductor integrated circuit device

#70
20110163813
2011-07-07

Amplifier circuit

#71
20110143822
2011-06-16

Fully integrated compact cross-coupled low noise amplifier

#72
20110121903
2011-05-26

Power amplifier

#73
20110121871
2011-05-26

Transconductance amplifier

#74
20110109389
2011-05-12

Amplifier circuit, integrated circuit and radio frequency communication unit

#75
20100283545
2010-11-11

Multi-path, multi-stage feed-forward operational amplifier circuit

#76
20100248648
2010-09-30

Amplifier circuit and transceiver

#77
20100237949
2010-09-23

Method and system for enhancing efficiency by modulating power amplifier gain

#78
20100225398
2010-09-09

Multi-path, multi-oxide-thickness amplifier circuit

#79
20100182090
2010-07-22

Ultra low noise high linearity LNA for multi-mode transceiver

#80
20100176882
2010-07-15

Transconductance amplifier with a filter for rejecting noise outside the useful band

#81
20100171556
2010-07-08

Differential amplifier with a feedback unit

#82
20100164623
2010-07-01

Transmitter

#83
20100159853
2010-06-24

Electronic amplification device with current mirror for integrated power amplifiers

#84
20100141341
2010-06-10

Receiver having multi-stage low noise amplifier

#85
20100117737
2010-05-13

RF power amplifier

#86
20100073214
2010-03-25

Differential operational amplifier circuit correcting settling error for use in pipelined A/D converter

#87
20100045379
2010-02-25

Amplifier and the method thereof

#88
20100032671
2010-02-11

Degradation correction for finFET circuits

#89
20100013556
2010-01-21

Transconductance amplifier

#90
20090318100
2009-12-24

Wireless transmitter having multiple power amplifier drivers (PADs) that are selectively biased to provide substantially linear magnitude and phase responses

#91
20090289721
2009-11-26

Circuits, processes, devices and systems for full integration of RF front end module including RF power amplifier

#92
20090278600
2009-11-12

Electronic circuit and electronic device

#93
20090261866
2009-10-22

Voltage divider circuit

#94
20090167439
2009-07-02

Amplifier and the method thereof

#95
20090115461
2009-05-07

Current converting method, transconductance amplifier and filter circuit using the same

#96
20090104873
2009-04-23

FULLY INTEGRATED COMPACT CROSS-COUPLED LOW NOISE AMPLIFIER

#97
20090058528
2009-03-05

Pre-amplifier for a receiver and a method therefor

#98
20090009244
2009-01-08

High-frequency circuit

#99
20080290943
2008-11-27

Multi-mode amplifier arrangement and method for controlling an amplifier arrangement

#100
20080137773
2008-06-12

Method and system for enhancing efficiency by modulating power amplifier gain

#101
20080057883
2008-03-06

Power control for a dual mode transmitter

#102
20080055005
2008-03-06

Feedback-type variable gain amplifier and method of controlling the same

#103
20080048780
2008-02-28

Linearization apparatus of triode region type operational transconductance amplifier

#104
20080024218
2008-01-31

Amplifier stage, operational amplifier and method for amplifying a signal

#105
20080018400
2008-01-24

Differential amplifier and method

#106
20080012640
2008-01-17

Unilateralized amplifier

#107
20070268070
2007-11-22

Power amplifier transmission line transformer

#108
20070252646
2007-11-01

Adaptive bias current circuit and method for amplifiers

#109
20070229154
2007-10-04

Differential amplifier with active post-distortion linearization

#110
20070216481
2007-09-20

Low noise amplifiers for low-power impulse radio ultra-wideband receivers

#111
20070183530
2007-08-09

Transmission device and radio communication device

#112
20070139114
2007-06-21

Gain variable circuit and automatic gain control amplifier using the same

#113
20070120603
2007-05-31

Techniques for designing wide band low noise amplifiers

#114
20070069767
2007-03-29

Differential amplifier

#115
20070057729
2007-03-15

Power amplifier and wireless communication device

#116
20070001768
2007-01-04

Broadband low noise amplifier and RF signal amplification method of the same

#117
20060267689
2006-11-30

Parallel power amplifier apparatus, method, and system

#118
20060229038
2006-10-12

Wireless transmitter having multiple power amplifier drivers (PADs) that are selectively biased to provide substantially linear magnitude and phase responses

#119
20060220746
2006-10-05

Sensing circuit

#120
20060068726
2006-03-30

Transmitter and radio communication terminal using the same

#121
20060055445
2006-03-16

Multi-standard amplifier

#122
20060050809
2006-03-09

System and method for reducing phase distortion in a linear transmitter via the introduction of bias currents to a power amplifier

#123
20060049872
2006-03-09

Non-match power amplifier and method for increased output 1 dB compression point

#124
20050270098
2005-12-08

General-purpose wideband amplifier

#125
20050079836
2005-04-14

Power amplifier having enhanced swing cascode architecture

#126
20050012553
2005-01-20

Variable gain low noise amplifier and method