ClassID:

220051

H03F2203/45492 - 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 being a pi circuit and the resistor being implemented by one or more controlled transistors

Recent Application in this class:
#1
20180287577
2018-10-04

Open-loop linear VGA

#2
20180083585
2018-03-22

Linear variable gain amplifier

#3
20180062588
2018-03-01

FBDDA amplifier and device including the FBDDA amplifier

#4
20160156319
2016-06-02

FBDDA amplifier and device including the FBDDA amplifier

#5
20150015307
2015-01-15

Comparator and amplifier

#6
20130154737
2013-06-20

Comparator and amplifier

#7
20120235744
2012-09-20

Driving method for obtaining a gain linear variation of a transconductance amplifier and corresponding driving circuit

#8
20120188031
2012-07-26

Programmable high-frequency high-gain equalizer for digital display interfaces

#9
20110115559
2011-05-19

System for reducing distortion in an electronic circuit using nonlinear feedback

#10
20110084763
2011-04-14

Db-linear process-independent variable gain amplifier

#11
20110025419
2011-02-03

Differential amplifier with offset voltage trimming

#12
20100231302
2010-09-16

Amplification circuit

#13
20100141340
2010-06-10

Method and apparatus for a high bandwidth amplifier with wide band peaking

#14
20100117724
2010-05-13

Filter circuit

#15
20100091623
2010-04-15

FREQUENCY CHARACTERISTIC ADJUSTING CIRCUIT, RECEIVING INTERFACE CIRCUIT, AND MAGNETIC STORAGE DEVICE

#16
20090322428
2009-12-31

Tunable linear operational transconductance amplifier

#17
20090195313
2009-08-06

Boosted tail-current circuit

#18
20090167402
2009-07-02

Dual barrel receiver equalization architecture

#19
20090153245
2009-06-18

Variable-gain wide-dynamic-range amplifier

#20
20090027563
2009-01-29

LOW NOISE AMPLIFIER

#21
20080297251
2008-12-04

Digitally adjusted variable gain amplifier (VGA) using switchable differential pairs

#22
20080191803
2008-08-14

Variable gain amplifying circuit

#23
20080088374
2008-04-17

Variable gain amplifiers

#24
20080031382
2008-02-07

Low distortion radio frequency (RF) limiter

#25
20080007340
2008-01-10

Digitally adjusted variable gain amplifier (VGA) using switchable differential pairs

#26
20070238432
2007-10-11

Variable gain amplifier, and AM-modulated signal reception circuit and detection circuit

#27
20060244530
2006-11-02

Digitally adjustable variable gain amplifier (VGA) using switchable differential pairs

#28
20060181349
2006-08-17

CMOS variable gain amplifier for controlling dB linear gain

#29
20060125562
2006-06-15

Variable gain amplifiers systems and methods

#30
20060044064
2006-03-02

Low noise amplifier

#31
20050024142
2005-02-03

Variable gain amplifier system