ClassID:

218853

H03C1/36 - CPC Classification

Classification description:

Amplitude modulation by means of semiconductor device having at least three electrodes

Recent Application in this class:
#1
20250330123
2025-10-23

ENVELOPE-DETECTOR-LESS FORWARD DATA RECEIVING DEVICE

#2
20230308323
2023-09-28

Methods and apparatus to reduce variations for on-off keying transmissions

#3
20220278649
2022-09-01

Frequency generator arrangement

#4
20180212568
2018-07-26

Dual-mode RF transmission frontend

#5
20180091113
2018-03-29

Power feeding device and wireless power feeding system

#6
20170279410
2017-09-28

Terahertz wave fast modulator based on coplanar waveguide combining with transistor

#7
20160336455
2016-11-17

Modulation circuit and semiconductor device including the same

#8
20150229271
2015-08-13

Current driven floating driver circuit

#9
20150214918
2015-07-30

Power feeding device and wireless power feeding system

#10
20150194934
2015-07-09

Quadrature modulator

#11
20150004922
2015-01-01

MODULATION CIRCUIT AND WIRELESS COMMUNICATION APPARATUS

#12
20140375393
2014-12-25

Digital amplitude modulator and control method for digital amplitude modulator

#13
20130162363
2013-06-27

Modulator, mixer and method for amplitude shift keying modulation

#14
20130093495
2013-04-18

Transmitter

#15
20120263260
2012-10-18

Highly optimized digital IQ transmitter chain

#16
20120187771
2012-07-26

Power feeding device and wireless power feeding system

#17
20120105127
2012-05-03

Method, system, and apparatus for RF and DC switching

#18
20120098099
2012-04-26

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME

#19
20110255578
2011-10-20

Method and system for frequency up-conversion

#20
20110183636
2011-07-28

Radio frequency transmitter having an amplifier with power supply modulation

#21
20110121911
2011-05-26

Modulation circuit and semiconductor device including the same

#22
20110050336
2011-03-03

Multi-chip stack structure and signal transmission method thereof

#23
20110013726
2011-01-20

Direct mm-wave m-ary quadrature amplitude modulation (QAM) modulator operating in saturated power mode

#24
20100311329
2010-12-09

Method and system for obtaining maximum gain of a passive upconversion mixer utilized in a transmitter

#25
20100271148
2010-10-28

Signal modulator

#26
20100237957
2010-09-23

Differential oscillation apparatus and modulator

#27
20100225409
2010-09-09

IQ-modulation

#28
20100188129
2010-07-29

Method and apparatus for applying clock phase and frequency offset

#29
20100134199
2010-06-03

Apparatus and method for producing signals coded with amplitude shift keying

#30
20100117753
2010-05-13

Radio frequency modulator

#31
20100052806
2010-03-04

Modulation for amplitude-modulating a signal

#32
20090318097
2009-12-24

Method and system for frequency down-conversion and frequency up-conversion

#33
20090225903
2009-09-10

Highly optimized digital IQ transmitter chain

#34
20090174495
2009-07-09

CONTACTLESS IC CARD SYSTEM

#35
20090174494
2009-07-09

Pulse generation circuit and modulator

#36
20090168919
2009-07-02

Pulse modulation circuit and pulse modulation method

#37
20090111396
2009-04-30

AM transmitter and modulation method using same

#38
20090096650
2009-04-16

Methods and systems for continuous-time digital modulation

#39
20090028251
2009-01-29

Method and device for controlling peak power and pulse width of a broadband gaussian pulse high-power RF transmitter

#40
20080285676
2008-11-20

Transmission of analog signals in a system-on-chip

#41
20080026706
2008-01-31

Polar modulating circuit, polar coordinate modulating method, integrated circuit and radio transmission device

#42
20080024214
2008-01-31

Power amplifier circuit for peak envelope modulation of high frequency signal

#43
20080018399
2008-01-24

Multistage amplifier apparatus with distortion compensation function

#44
20080008273
2008-01-10

Power amplifier circuit and method for envelope modulation of high frequency signal

#45
20080002764
2008-01-03

Alternating digital RF modulation

#46
20070297531
2007-12-27

CONTACTLESS IC CARD SYSTEM

#47
20070224950
2007-09-27

Frequency up-conversion using a harmonic generation and extraction module

#48
20070170985
2007-07-26

Contactless IC card system

#49
20070082640
2007-04-12

Signal generation apparatus, frequency converting apparatus, and receiver

#50
20070057916
2007-03-15

Envelope modulator for haptic feedback devices

#51
20060293003
2006-12-28

High-efficiency modulating RF amplifier

#52
20060293002
2006-12-28

High-efficiency modulating RF amplifier

#53
20060252388
2006-11-09

Digital amplitude modulation transmitter with pulse width modulating RF drive

#54
20060220759
2006-10-05

Contactless IC card system

#55
20060181352
2006-08-17

Radio frequency excitation arrangement

#56
20060135096
2006-06-22

High-efficiency modulating RF amplifier

#57
20060040623
2006-02-23

Amplitude modulator, in particular for mobile radio, and a method for modulation of a signal

#58
20060006955
2006-01-12

Contactless IC card system

#59
20050218992
2005-10-06

Optimizing power consumption in amplifiers

#60
20050218991
2005-10-06

Bias circuit for a bipolar transistor

#61
20050074073
2005-04-07

Direct digital amplitude modulator