Patents-Review.com
ClassID:

219157 ⎘

H03F1/303 - CPC Classification

Classification description:

Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements; Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device

Sub-classes:
Recent Application in this class:
#1
20260095128
2026-04-02

DUAL SWITCHING TECHNOLOGY POWER DRIVE TOPOLOGY

 #2
20260081565
2026-03-19

SIGNAL GENERATION APPARATUS, METHOD, AND POWER AMPLIFICATION SYSTEM

 #3
20260039255
2026-02-05

POWER AMPLIFICATION DEVICE

 #4
20260039252
2026-02-05

POWER AMPLIFICATION DEVICE

 #5
20250253814
2025-08-07

LOW-NOISE LINEAR DYNAMIC AMPLIFIER

 #6
20250192739
2025-06-12

DIFFERENTIAL AMPLIFIER

 #7
20250172958
2025-05-29

Low-Noise High Efficiency Bias Generation Circuits and Method

 #8
20250088162
2025-03-13

Power Amplifier Self-Heating Compensation Circuit

 #9
20250062724
2025-02-20

AMPLIFIER CIRCUIT AND COMMUNICATION DEVICE

 #10
20240405728
2024-12-05

DISTORTION COMPENSATION FOR A SWITCH IN AN AMPLIFIER CIRCUIT

 #11
20240364281
2024-10-31

CLASS D-H PREAMPLIFIER AND CASCODED HIGH-VOLTAGE AMPLIFIER

 #12
20240235503
2024-07-11

PHYSICAL QUANTITY OUTPUTTING CIRCUIT

 #13
20240171133
2024-05-23

SENSOR DRIVER PROVIDING HIGH POWER SUPPLY REJECTION RATIO

 #14
20240171129
2024-05-23

CLASS D AMPLIFIER CIRCUIT

 #15
20240136988
2024-04-25

PHYSICAL QUANTITY OUTPUTTING CIRCUIT

 #16
20240097621
2024-03-21

COMPENSATION OF THERMALLY INDUCED VOLTAGE ERRORS

 #17
20240097620
2024-03-21

SYSTEM AND METHOD OF PROTECTING A LOW VOLTAGE CAPACITOR OF AN ERROR AMPLIFIER OPERATING IN A HIGHER VOLTAGE DOMAIN

 #18
20230384811
2023-11-30

Low-noise high efficiency bias generation circuits and method

 #19
20230291363
2023-09-14

Load Regulation for LDO with Low Loop Gain

 #20
20230238920
2023-07-27

Dynamic current limit for operational amplifier

 #21
20230216450
2023-07-06

POWER AMPLIFICATION CIRCUIT

 #22
20230172514
2023-06-08

Sense Amplifer For a Physiological Sensor and/or Other Sensors

 #23
20230170315
2023-06-01

RADIO-FREQUENCY MODULE AND COMMUNICATION APPARATUS

 #24
20230084770
2023-03-16

Power amplifier self-heating compensation circuit

 #25
20230013541
2023-01-19

WAFER LEVEL PACKAGE HAVING ENHANCED THERMAL DISSIPATION

 #26
20220407476
2022-12-22

DC-blocking amplifier with aliasing tone cancellation circuit

 #27
20220368288
2022-11-17

Amplifying Circuit and Voltage Generating Circuit

 #28
20220345097
2022-10-27

Ultra-low noise capacitively-coupled auto-zeroed and chopped amplifier with sensor offset compensation

 #29
20220329211
2022-10-13

Compensation of thermally induced voltage errors

 #30
20220302888
2022-09-22

Power amplifier with quasi-static drain voltage adjustment

 #31
20220221886
2022-07-14

Low-noise high efficiency bias generation circuits and method

 #32
20220200554
2022-06-23

Buffer circuit, receiver, base station and mobile device

 #33
20220190794
2022-06-16

Circuit element pair matching method and circuit

 #34
20220181134
2022-06-09

Amplifier

 #35
20220140791
2022-05-05

Load regulation for LDO with low loop gain

 #36
20210367569
2021-11-25

Chopper amplifiers with multiple sensing points for correcting input offset

 #37
20210265957
2021-08-26

Sample and hold amplifier circuit

 #38
20210211110
2021-07-08

Power amplifier self-heating compensation circuit

 #39
20210183436
2021-06-17

Voltage retention techniques

 #40
20200358412
2020-11-12

Amplifier nonlinear offset drift correction

 #41
20200304078
2020-09-24

Techniques for controlling an auto-zero amplifier

 #42
20200225688
2020-07-16

Low-noise high efficiency bias generation circuits and method

 #43
20200186158
2020-06-11

Method and circuit for compensating for the offset voltage of electronic circuits

 #44
20200178823
2020-06-11

Neural-signal amplifier and multi-channel neural-signal amplifying system

 #45
20200177137
2020-06-04

Controlled transistor on-resistance with predefined temperature dependence

 #46
20200136569
2020-04-30

Amplifier

 #47
20200135441
2020-04-30

Amplifier

 #48
20200106400
2020-04-02

Chopper amplifier with decoupled chopping frequency and threshold frequency

 #49
20200099351
2020-03-26

AC-coupled chopper signal for a high-impedance buffer

 #50
20200076391
2020-03-05

Power amplifier self-heating compensation circuit

 #51
20200067464
2020-02-27

Clamped output amplifier

 #52
20200052655
2020-02-13

Operational amplifier and control method thereof

 #53
20200021249
2020-01-16

Temperature compensated oscillator

 #54
20190181820
2019-06-13

Switch for controlling a gain of an amplifier and method thereof

 #55
20190044487
2019-02-07

Class-D amplifier and audio playback apparatus

 #56
20190025863
2019-01-24

Low-noise high efficiency bias generation circuits and method

 #57
20190020317
2019-01-17

Current-limiting circuit for a power amplifier

 #58
20180358940
2018-12-13

Amplifier

 #59
20180316327
2018-11-01

Power amplifier self-heating compensation circuit

 #60
20180309412
2018-10-25

Power amplification circuit

 #61
20180302043
2018-10-18

Control circuit, control method, and electronic device

 #62
20180278220
2018-09-27

Amplifier

 #63
20180254752
2018-09-06

Reducing offset from an amplifier output without a low pass filter

 #64
20180241357
2018-08-23

Photoelectric conversion device

 #65
20180205345
2018-07-19

Front end circuit

 #66
20180167041
2018-06-14

Bias circuitry for depletion mode amplifiers

 #67
20180152152
2018-05-31

Power amplifier

 #68
20180138866
2018-05-17

Temperature compensated oscillator

 #69
20180048295
2018-02-15

Adjustable time duration for driving pulse-width modulation (PWM) output to reduce thermal noise

 #70
20180046210
2018-02-15

Low-noise high efficiency bias generation circuits and method

 #71
20170317650
2017-11-02

Power amplification circuit

 #72
20170302236
2017-10-19

Amplification circuit

 #73
20170264249
2017-09-14

Low noise amplifier (LNA) system

 #74
20170264248
2017-09-14

Switching amplifier with zero voltage switching and balanced thermal control algorithm

 #75
20170244367
2017-08-24

High linearity inductorless LNA

 #76
20170194917
2017-07-06

Semiconductor device

 #77
20170187335
2017-06-29

Amplifying electronic circuit with reduced start-up time for a signal including quadrature components

 #78
20170163223
2017-06-08

Power amplification circuit

 #79
20170111018
2017-04-20

Chopper stabilized amplifier

 #80
20170047902
2017-02-16

Switch control method, switch control circuit, regulator and storage medium

 #81
20160373074
2016-12-22

Bias circuitry for depletion mode amplifiers

 #82
20160373068
2016-12-22

Biasing circuitry

 #83
20160352289
2016-12-01

Front end circuit

 #84
20160344346
2016-11-24

Power amplifier

 #85
20160276989
2016-09-22

Semiconductor integrated circuit device

 #86
20160265970
2016-09-15

Event-based vision sensor and difference amplifier with reduced noise and removed offset

 #87
20160261305
2016-09-08

Transceiver front end with low loss T/R switch

 #88
20160241300
2016-08-18

Unpowered switching module

 #89
20160233837
2016-08-11

Ground fault circuit interrupter and method

 #90
20160233833
2016-08-11

Apparatus and system for rail-to-rail amplifier

 #91
20160179114
2016-06-23

Low-noise high efficiency bias generation circuits and method

 #92
20160173041
2016-06-16

Hot-swap current-sensing system

 #93
20160099694
2016-04-07

Wide range transimpedance amplifier

 #94
20160079926
2016-03-17

Amplifying circuit

 #95
20160065133
2016-03-03

Power-efficient chopper amplifier

 #96
20160013765
2016-01-14

Current sense circuit using a single opamp having DC offset auto-zeroing

 #97
20150084610
2015-03-26

Low-noise high efficiency bias generation circuits and method

 #98
20150016630
2015-01-15

Pop-click noise grounding switch design with deep sub-micron CMOS technology

 #99
20140354354
2014-12-04

Nanovolt amplifier design

 #100
20140312971
2014-10-23

Differential amplifier circuit

 #101
20140225670
2014-08-14

Method and apparatus for correcting asymmetry of an input signal of an amplifier

 #102
20140203872
2014-07-24

Low-noise amplifier, receiver, method and computer program

 #103
20130335167
2013-12-19

De-noise circuit and de-noise method for differential signals and chip for receiving differential signals

 #104
20130207727
2013-08-15

Apparatus and methods for reducing output noise of a signal channel

 #105
20130141162
2013-06-06

Switching amplifier with inductance means for transmitting energy

 #106
20120242407
2012-09-27

Switched amplifier circuit arrangement and method for switched amplification

 #107
20120126889
2012-05-24

Low distortion variable gain amplifier (VGA)

 #108
20120038344
2012-02-16

Low-noise high efficiency bias generation circuits and method

 #109
20110304398
2011-12-15

CMOS power amplifier and temperature compensation circuit thereof

 #110
20110260708
2011-10-27

Bandgap reference circuit with sampling and averaging circuitry

 #111
20110187459
2011-08-04

Emitter-follower type bias circuit

 #112
20100295522
2010-11-25

Semiconductor device having voltage regulator

 #113
20100052783
2010-03-04

Class-D amplifier

 #114
20100026542
2010-02-04

Adaptive bias current generation for switched-capacitor circuits

 #115
20090270057
2009-10-29

Bias circuit for a radio frequency power-amplifier and method therefor

 #116
20090267687
2009-10-29

Chopper-stabilized amplifier and magnetic field sensor

 #117
20090174474
2009-07-09

Power amplifier

 #118
20090022339
2009-01-22

AMPLIFIER

 #119
20080252370
2008-10-16

Digital audio amplifier and digital audio amplifying method therefor

 #120
20080157824
2008-07-03

Analog voltage generator with self-biased capacitive feedback stage

 #121
20080150628
2008-06-26

Low distortion class-D amplifier

 #122
20080129375
2008-06-05

Power supply compensation

 #123
20070200626
2007-08-30

Power supply compensation

 #124
20070008020
2007-01-11

Output buffer circuit

 #125
20060158249
2006-07-20

Linear amplifier and schmitt trigger using an analogue switch

 #126
17982826
2025-11-25

Parametric-insensitive edge rate control in switched-power circuits with tailored power supply voltage sensitivity

 #127
16192048
2019-09-24

Cancellation capacitor for aliasing and distortion improvement

 #128
14872328
2017-02-14

Auxiliary control of system offsets