Patents-Review.com
ClassID:

219723 ⎘

H03F2203/21112 - 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 power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers A filter circuit being added at the input of a power amplifier stage

Recent Application in this class:
#1
20240223132
2024-07-04

RECEIVING MODULE, PACKAGING STRUCTURE, PRINTED CIRCUIT BOARD, AND ELECTRONIC DEVICE

 #2
20220149799
2022-05-12

Non-isolated single-inductor circuit for outputting positive and negative low-voltage power

 #3
20210044263
2021-02-11

Power amplifier circuit

 #4
20210013855
2021-01-14

Power amplifier circuit

 #5
20210013837
2021-01-14

Multiple-stage power amplifiers implemented with multiple semiconductor technologies

 #6
20200389130
2020-12-10

Multiple-stage power amplifiers implemented with multiple semiconductor technologies

 #7
20200228167
2020-07-16

Front-end modules with fixed impedance matching circuits

 #8
20200162029
2020-05-21

Circuits, devices and methods related to amplification with active gain bypass

 #9
20190341894
2019-11-07

Power amplifier, radio remote unit, and base station

 #10
20190273523
2019-09-05

FILTERING TECHNIQUES

 #11
20190199302
2019-06-27

Power amplifier circuit

 #12
20190173530
2019-06-06

Processing radio-frequency signals with tunable matching circuits

 #13
20190140598
2019-05-09

Multiple-stage power amplifiers implemented with multiple semiconductor technologies

 #14
20190103846
2019-04-04

Power amplifier circuit

 #15
20190044481
2019-02-07

ARCHITECTURE FOR HIGH-BANDWIDTH POWER SUPPLY TO POWER AMPLIFIER (PA) DISTRIBUTION NETWORK

 #16
20190028132
2019-01-24

Aggregate signal amplification device and method

 #17
20190020314
2019-01-17

RF amplifier with conductor-less region underlying filter circuit inductor, and methods of manufacture thereof

 #18
20180351594
2018-12-06

DIVERSITY RECEIVER FOR WIRELESS APPLICATIONS

 #19
20180190601
2018-07-05

High-frequency module

 #20
20180097533
2018-04-05

Aggregate signal amplification device and method

 #21
20180076774
2018-03-15

Radio-frequency amplifier having active gain bypass circuit

 #22
20180062682
2018-03-01

Filtering architectures and methods for wireless applications

 #23
20180034418
2018-02-01

Doherty input power splitter and linearization method

 #24
20170346456
2017-11-30

Active RC filters

 #25
20170289684
2017-10-05

Amplifier circuit for a parametric transducer and a related audio device

 #26
20170149393
2017-05-25

Semiconductor device

 #27
20160322997
2016-11-03

Systems, devices and methods related to diversity receivers

 #28
20160285426
2016-09-29

Power amplifiers with tunable notches

 #29
20160285418
2016-09-29

RF amplifier with conductor-less region underlying filter circuit inductor, and methods of manufacture thereof

 #30
20160269091
2016-09-15

Wireless communication device, control method of wireless communication device and phase shifter

 #31
20160233836
2016-08-11

System and method for a low noise amplifier

 #32
20160126993
2016-05-05

Diversity receiver front end system with tunable output matching circuit

 #33
20160126987
2016-05-05

Diversity receiver front end system with impedance matching components

 #34
20160126896
2016-05-05

Transformer feedback amplifier

 #35
20160072443
2016-03-10

Semiconductor device

 #36
20160020738
2016-01-21

Diversity amp module and apparatus comprising the same

 #37
20150357975
2015-12-10

Hardware-efficient compensator for outphasing power amplifiers

 #38
20150333708
2015-11-19

Class-D amplifier

 #39
20150280659
2015-10-01

Amplification systems and methods with output regulation

 #40
20150280654
2015-10-01

System and method for a low noise amplifier

 #41
20150270816
2015-09-24

Performance of off-chip connection for power amplifier

 #42
20150249432
2015-09-03

High-frequency drain power supply to decrease power dissipation in class-AB power amplifiers

 #43
20150130537
2015-05-14

Power amplification module

 #44
20150102873
2015-04-16

Cavity filter, power amplifying module

 #45
20140347128
2014-11-27

Digital class-D amplifier and digital signal processing method

 #46
20140232466
2014-08-21

Linear amplifier and multistage linear amplifier

 #47
20120287952
2012-11-15

APPARATUS AND METHODS FOR HIGH VOLTAGE AMPLIFICATION WITH LOW NOISE

 #48
20120133442
2012-05-31

Radiofrequency amplifier

 #49
20120056676
2012-03-08

RF amplifier with digital filter for polar transmitter

 #50
20110230149
2011-09-22

RF power amplifier device and wireless communication terminal device

 #51
20110227642
2011-09-22

Parallel forward path cartesian feedback loop and loop filter with switchable order for cartesian feedback loops

 #52
20110175680
2011-07-21

Wireless communication device and semiconductor package device having a power amplifier therefor

 #53
20110163813
2011-07-07

Amplifier circuit

 #54
20100272214
2010-10-28

Outphasing amplification of digital modulated signals in a radiofrequency transmission system

 #55
20100225398
2010-09-09

Multi-path, multi-oxide-thickness amplifier circuit

 #56
20090295474
2009-12-03

Device with shared power amplifiers, for use in a wireless telecommunications system

 #57
20090141183
2009-06-04

Active Splitter Device and Method Using Diplexed Front End

 #58
20090022240
2009-01-22

Low power distributed transmitter

 #59
20080231359
2008-09-25

POWER DIVIDER/COMBINER AND POWER DIVIDING/COMBINING METHOD USING THE SAME

 #60
20080125061
2008-05-29

RF power amplifying device and wireless communication terminal device

 #61
20070176677
2007-08-02

Switched distributed power amplifier

 #62
20060290444
2006-12-28

Power amplifier utilizing quadrature hybrid for power dividing, combining and impedance matching