H03F2200/333 - CPC Classification Index

#1

20250300614

2025-09-25

AMPLIFIER

#2

20240146253

2024-05-02

Inductive interface circuits having ripple-reduction loops

#3

20240029931

2024-01-25

INDUCTOR APPARATUS OPTIMIZED FOR LOW POWER LOSS IN CLASS D AUDIO AMPLIFIER APPLICATIONS AND METHOD FOR MAKING THE SAME

#4

20220109412

2022-04-07

Power amplifier and demodulator

#5

20210175866

2021-06-10

Amplifiers and manufacture method thereof

#6

20210126588

2021-04-29

Amplifier

#7

20200388428

2020-12-10

Inductor apparatus optimized for low power loss in class-D audio amplifier applications and method for making the same

#8

20190250246

2019-08-15

Radar signal processor and radar system

#9

20190222182

2019-07-18

Class D amplifier

#10

20190149108

2019-05-16

Power-on-reset and phase comparator for chopper amplifiers

#11

20190103839

2019-04-04

Radio frequency (RF) receiver circuit

#12

20190081650

2019-03-14

Amplifier noise cancellation

#13

20180351592

2018-12-06

System, apparatus and method for performing automatic gain control in a receiver for a packet-based protocol

#14

20180332488

2018-11-15

RF receiver with built-in self-test function

#15

20180331660

2018-11-15

Class D audio amplifier with adjustable gate drive

#16

20180183390

2018-06-28

Receiver calibration using power amplifier noise

#17

20180123623

2018-05-03

Semiconductor device and operating method thereof

#18

20180076837

2018-03-15

Low power spectrally pure offset local oscillator system

#19

20180076775

2018-03-15

Single input, dual output path low-noise amplifier

#20

20180062593

2018-03-01

Class-D amplifier circuits

#21

20180034420

2018-02-01

Amplifier adapted for noise suppression

#22

20170366146

2017-12-21

Switched inductor/transformer for dual-band low-noise amplifier (LNA)

#23

20170353876

2017-12-07

RF receiver with built-in self-test function

#24

20170317696

2017-11-02

Receiving a plurality of radio frequency bands

#25

20170311077

2017-10-26

Audio signal correction and calibration for a room environment

#26

20170294885

2017-10-12

Adaptive power amplifier and radio frequency transmitter thereof

#27

20170179883

2017-06-22

Multimode voltage controlled oscillator

#28

20170125566

2017-05-04

Compound semiconductor device and manufacturing method thereof

#29

20170125565

2017-05-04

3-5 device with doped regions and method of fabricating

#30

20170125563

2017-05-04

Compound semiconductor device and method of manufacturing the same

#31

20170125533

2017-05-04

SEMICONDUCTOR APPARATUS

#32

20170125516

2017-05-04

Gallium nitride based high electron mobility transistor (GaN-HEMT) device with an iron-doped cap layer and method of manufacturing the same

#33

20170117851

2017-04-27

Audio amplifier using multi-level pulse width modulation

#34

20170111065

2017-04-20

Hybrid amplifier and signal combiner

#35

20170054456

2017-02-23

Receiving a plurality of radio frequency bands

#36

20170040951

2017-02-09

Amplifier adapted for noise suppression

#37

20170019079

2017-01-19

Class-D amplifier circuits

#38

20160373234

2016-12-22

IN-BAND FULL DUPLEX TRANSCEIVER

#39

20160337152

2016-11-17

TRANSMITTER, TRANSCEIVER CIRCUIT, AND WIRELESS TRANSMITTING AND RECEIVING SYSTEM

#40

20160316295

2016-10-27

Audio signal correction and calibration for a room environment

#41

20160197589

2016-07-07

Inverse class F amplifiers with intrinsic capacitance compensation

#42

20160013766

2016-01-14

Linear FET feedback amplifier

#43

20150256133

2015-09-10

Low noise amplifier for multiple channels

#44

20150215137

2015-07-30

Method and device for broadband high isolation coupling

#45

20150214906

2015-07-30

Audio amplifier with an enhanced current limiter using a proxy signal

#46

20150200637

2015-07-16

Biosignal amplifying circuit

#47

20150155833

2015-06-04

Signal amplifier with active power management

#48

20150130536

2015-05-14

Mixer

#49

20150109056

2015-04-23

Class-D amplifier circuits

#50

20140368267

2014-12-18

Chopped circuit with AC and DC ripple error feedback loops

#51

20140361837

2014-12-11

Integrated circuit wireless communication unit and method for providing a power supply

#52

20140354352

2014-12-04

Self-oscillating class-D amplifier and self-oscillating frequency control method for self-oscillating class-D amplifier

#53

20140312967

2014-10-23

Chopper amplifier

#54

20140248846

2014-09-04

Terrestrial broadcast wave reception-use antenna device and component of same

#55

20140161281

2014-06-12

Audio signal correction and calibration for a room environment

#56

20140077873

2014-03-20

Chopped circuit with AC and DC ripple error feedback loops

#57

20100330913

2010-12-30

Polar transmitter amplifier with variable output power

#58

20100099368

2010-04-22

Monolithic FM-band transmit power amplifier for mobile cellular devices and method of operation thereof

#59

20080284536

2008-11-20

Dual mode power amplifier

#60

20080280573

2008-11-13

Linear RF amplifier with polar feedback

#61

20080111621

2008-05-15

Amplifier circuit and method for reducing voltage and current noise

#62

20080003960

2008-01-03

Polar transmitter amplifier with variable output power

#63

20070223648

2007-09-27

Prescaler and buffer

#64

15376969

2017-06-27

Pulse shaping biasing circuitry

#65

15080024

2018-03-13

Dynamic receive sensitivity

#66

15065312

2016-12-13

Pulse shaping biasing circuitry

#67

14572396

2016-04-19

Inverse class F amplifiers with intrinsic capacitance compensation