ClassID:

219150

H03F1/226 - 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 detrimental influences of internal impedances of amplifying elements by use of cascode coupling, i.e. earthed cathode or emitter stage followed by earthed grid or base stage respectively with junction-FET's

Recent Application in this class:
#1
20230246613
2023-08-03

AMPLIFIER AND METHOD FOR CONTROLLING COMMON MODE VOLTAGE OF THE SAME

#2
20230223905
2023-07-13

LOW NOISE AMPLIFIER AND APPARATUS INCLUDING THE SAME

#3
20230170853
2023-06-01

CIRCUIT

#4
20200266775
2020-08-20

Amplifier for reusing current by using transformer and method thereof

#5
20190341887
2019-11-07

Reconfigurable low-noise amplifier (LNA)

#6
20180351514
2018-12-06

Dual-feedback amplifier limiter

#7
20180166430
2018-06-14

Semiconductor device and electronic apparatus

#8
20180138873
2018-05-17

Cascode power amplifier stage using HBT and FET

#9
20180091099
2018-03-29

Reconfigurable low-noise amplifier (LNA)

#10
20160211246
2016-07-21

Semiconductor device and electronic apparatus of a cascode-coupled system

#11
20160049908
2016-02-18

Radio-frequency amplifier circuit and control voltage setting method for radio-frequency amplifier circuit

#12
20150123732
2015-05-07

RF amplifier

#13
20140015609
2014-01-16

Wide bandwidth radio frequency amplier having dual gate transistors

#14
20130229237
2013-09-05

High-frequency amplifier

#15
20120188021
2012-07-26

Low 1/f noise high-frequency broadband amplifier (DC-12 GHz)

#16
20110193636
2011-08-11

Linearization circuits and methods for power amplification

#17
20110050345
2011-03-03

Linearization circuits and methods for power amplification

#18
20100127776
2010-05-27

Amplifier with bias circuit providing improved linearity

#19
20100060362
2010-03-11

Cascode circuit

#20
20080230784
2008-09-25

Cascode circuit employing a depletion-mode, GaN-based FET

#21
20070003291
2007-01-04

Distortion cancellation in a transimpedance amplifier circuit

#22
20050146389
2005-07-07

Split cascode line amplifier for current-mode signal transmission

#23
14952181
2016-08-02

High power and high linearity cascode amplifier

#24
14177849
2016-01-05

High power and high linearity cascode amplifier