Patents-Review.com
ClassID:

219607 ⎘

H03F2200/339 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers Pulse amplitude modulation being used in an amplifying circuit

Recent Application in this class:
#1
20250279796
2025-09-04

Linearization Technique for PAM-4 CMOS Electrical-to-Optical Interface

 #2
20250096909
2025-03-20

AMPLITUDE MODULATION TRANSMISSION DEVICE

 #3
20250030384
2025-01-23

HIGH-FREQUENCY POWER SUPPLY

 #4
20210351755
2021-11-11

Class D amplifier circuit

 #5
20190386626
2019-12-19

Class D amplifier circuit

 #6
20190131999
2019-05-02

Modulator for a digital amplifier

 #7
20190044484
2019-02-07

Transimpedance amplifier with variable inductance input reducing peak variation over gain

 #8
20180287595
2018-10-04

Power amplifying apparatus with spurious signal reduction function

 #9
20180159490
2018-06-07

Class D amplifier circuit

 #10
20180145644
2018-05-24

Transimpedance amplifier with variable inductance input reducing peak variation over gain

 #11
20180041175
2018-02-08

Transimpedance amplifier with variable inductance input reducing peak variation over gain

 #12
20180007650
2018-01-04

Circuits and operating methods thereof for correcting phase errors caused by gallium nitride devices

 #13
20170194926
2017-07-06

Class D amplifier circuit

 #14
20170126191
2017-05-04

Linearizing and reducing peaking simultaneously in single-to-differential wideband radio frequency variable gain trans-impedance amplifier (TIA) for optical communication

 #15
20170117863
2017-04-27

Variable gain amplifier and driver implementing the same

 #16
20170040960
2017-02-09

Amplifier for modulating the amplitude of an RF signal

 #17
20170033743
2017-02-02

Outphasing transmitter systems and methods

 #18
20160065158
2016-03-03

Class D amplifier circuit

 #19
20150222230
2015-08-06

OUTPUT POWER TUNING USING PULSE POSITION AND PULSE WIDTH CONTROL IN A PULSE POSITION, PULSE WIDTH MODULATION AMPLIFIER

 #20
20150054588
2015-02-26

Supply modulator

 #21
20120213389
2012-08-23

Audio mixing device, method thereof, and electronic device

 #22
20090108951
2009-04-30

Methods and apparatus for reducing peak-to-RMS amplitude ratio in communication signals

 #23
20070288541
2007-12-13

Apparatus and method for performing a calculation operation

 #24
15420109
2018-11-20

High-efficiency RF digital power amplifier with joint duty-cycle/amplitude modulation

 #25
15226814
2017-09-26

Transimpedance amplifier with variable inductance input reducing peak variation over gain