H03M3/39 - CPC Classification Index

ClassID:

222508 ⎘

H03M3/39 - CPC Classification

Classification description:

Conversion of analogue values to or from differential modulation; Delta-sigma modulation Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators

Sub-classes:

H03M3/392 » {Arrangements for selecting among plural operation modes, e.g. for multi-standard operation} 24
H03M3/40 » {Arrangements for handling quadrature signals, e.g. complex modulators} 40
H03M3/402 » {Arrangements specific to bandpass modulators} 29
H03M3/412 » {characterised by the number of quantisers and their type and resolution} 34
H03M3/436 » {characterised by the order of the loop filter, e.g. error feedback type} 68

Recent Application in this class:

20250357946

2025-11-20

SIGMA-DELTA MODULATOR FOR CAPACITIVE TOUCH SENSING CHANNEL

20250309914

2025-10-02

METHOD FOR DESIGNING A SIGMA-DELTA CONVERTER

20250141468

2025-05-01

COMPENSATION DEVICE AND METHOD FOR EXCESS LOOP DELAY USING TIME DIVISION SWITCHING TECHNIQUE

20250132769

2025-04-24

DELTA-SIGMA MODULATION APPARATUS, DELTA-SIGMA MODULATION METHOD AND RECORDING MEDIUM

20250055474

2025-02-13

SAB BASED LOOP FILTER WITH CROSS-COUPLED STRUCTURE AND ADC INCLUDING THE SAME

20250042724

2025-02-06

CAPACITIVE SENSING CIRCUIT AND CAPACITIVE SENSING METHOD

20240348259

2024-10-17

AD CONVERSION CIRCUIT PHOTOELECTRIC CONVERSION APPARATUS, PHOTOELECTRIC CONVERSION SYSTEM, AND MOVING BODY

20240313796

2024-09-19

CHARGE DOMAIN APPROACH TO OVERSAMPLING CONVERTERS

20240297664

2024-09-05

Intermediate Frequency Digital-to-Analog Conversion (IFDAC) System

#10

20240297663

2024-09-05

SIGMA-DELTA MODULATOR BASED ANALOG-TO-DIGITAL CONVERTER AND DITHERING METHOD THEREOF

#11

20240297657

2024-09-05

Incremental delta modulation for analog to digital converter signal to noise ratio and linearity enhancement

#12

20240030933

2024-01-25

Delta sigma modulator

#13

20230421171

2023-12-28

Continuous-time sigma delta analog-to-digital converter

#14

20230021989

2023-01-26

Incremental analog-to-digital converter and circuit system using the same

#15

20220360274

2022-11-10

Ad converter

#16

20220149744

2022-05-12

Sigma, delta and sigma-delta DC/DC converters for wide input and output voltage ranges

#17

20220045693

2022-02-10

System and method for dynamic element matching for delta sigma converters

#18

20210373683

2021-12-02

Low-noise, high-resolution ratiometric capacitive baseliner

#19

20210359700

2021-11-18

Sigma delta modulator device and sigma delta modulation method

#20

20210351768

2021-11-11

Ramp generator providing high resolution fine gain including fractional divider with delta-sigma modulator

#21

20210203286

2021-07-01

Low delay, low power and high linearity class-D modulation loop

#22

20200373891

2020-11-26

RF signal generation device and RF signal generation method

#23

20200313942

2020-10-01

TRANSMITTER AND METHOD

#24

20200287562

2020-09-10

Low noise quantized feedback configuration

#25

20200169267

2020-05-28

Sigma delta analog to digital converter

#26

20200007146

2020-01-02

Low noise quantized feedback configuration

#27

20190379390

2019-12-12

Excess loop delay estimation and correction

#28

20190356329

2019-11-21

High efficiency power amplifier architectures for RF applications

#29

20190288704

2019-09-19

Modulators

#30

20190199369

2019-06-27

Delta-sigma modulator and delta-sigma converter

#31

20190068215

2019-02-28

Modulators

#32

20190028105

2019-01-24

Frequency synthesizer with tunable accuracy

#33

20180248724

2018-08-30

Delta-sigma modulator, transmitter, and integrator

#34

20180205382

2018-07-19

Frequency synthesizer with tunable accuracy

#35

20180176695

2018-06-21

Integrated circuit component for a hearing assistive device

#36

20180145700

2018-05-24

High efficiency power amplifier architectures for RF applications

#37

20180034471

2018-02-01

High-linearity sigma-delta converter

#38

20170310338

2017-10-26

Digital modulation device, and digital modulation method

#39

20170134040

2017-05-11

Asynchronous electrical circuitry techniques for producing stationary carrier signal to encode input signal amplitude into output signal time-sequence information

#40

20160265995

2016-09-15

High resolution sigma delta modulator for capacitance sensor terminal displacement measurement

#41

20160254823

2016-09-01

Electrical circuit

#42

20160182068

2016-06-23

Injection locked digital frequency synthesizer circuit

#43

20160173121

2016-06-16

Circuit generating an analog signal using a part of a sigma-delta ADC

#44

20160173120

2016-06-16

Test signal generator for sigma-delta ADC

#45

20160149586

2016-05-26

Delta-sigma modulator having differential output

#46

20150381199

2015-12-31

Comparators for delta-sigma modulators

#47

20150372698

2015-12-24

Software programmable cellular radio architecture for telematics and infotainment

#48

20150244392

2015-08-27

Method, system and apparatus for dual mode operation of a converter

#49

20150215553

2015-07-30

Two-stage analog-to-digital converter for high-speed image sensor

#50

20150102951

2015-04-16

ΔΣ-modulator and ΔΣ-A/D converter

#51

20150097711

2015-04-09

Analogue to digital converter

#52

20150061907

2015-03-05

Technique for excess loop delay compensation in delta-sigma modulators

#53

20140368369

2014-12-18

Delta-sigma modulator with high input impedance

#54

20140368365

2014-12-18

Quantization noise coupling delta sigma ADC with a delay in the main DAC feedback

#55

20140340248

2014-11-20

Resolution-boosted sigma delta analog-to-digital converter

#56

20140333462

2014-11-13

Sigma-delta modulator

#57

20140301572

2014-10-09

Systems and methods for compressing a digital signal in a digital microphone system

#58

20140266829

2014-09-18

Multi-level sigma-delta ADC with reduced quantization levels

#59

20140218223

2014-08-07

MULTIPLEXED SIGMA DELTA MODULATOR

#60

20140191891

2014-07-10

Analogue-to-digital converter

#61

20140125504

2014-05-08

Delay compensated continuous time sigma delta analog-to-digital converter

#62

20140103999

2014-04-17

Amplifier, fully-differential amplifier and delta-sigma modulator

#63

20140077843

2014-03-20

Pipelined Bus-Splitting Digital Delta-Sigma Modulator for Fractional-N Frequency Synthesizer System and Method

#64

20140035770

2014-02-06

Analogue-to-digital converter

#65

20130154863

2013-06-20

Amplifier, fully-differential amplifier and delta-sigma modulator

#66

20130099955

2013-04-25

Signal quantization method and apparatus and sensor based thereon

#67

20130076548

2013-03-28

Delta sigma modulator

#68

20130021182

2013-01-24

Achieving high dynamic range in a sigma delta analog to digital converter

#69

20130021180

2013-01-24

Reconfigurable delta-sigma modulator ADC using noise coupling

#70

20130015987

2013-01-17

MIMO delta-sigma delta analog-to-digital converter using noise canceling

#71

20120256775

2012-10-11

Method, system and apparatus for dual mode operation of a converter

#72

20120161990

2012-06-28

Integrator and oversampling A/D converter having the same

#73

20120068872

2012-03-22

Methods of quantizing signals using variable reference signals

#74

20120068758

2012-03-22

Reference current sources

#75

20110285562

2011-11-24

Continuous-time delta-sigma ADC with compact structure

#76

20110260900

2011-10-27

Second order dynamic element rotation scheme

#77

20110221618

2011-09-15

Continuous-time delta-sigma ADC with compact structure

#78

20110205094

2011-08-25

Method, system and apparatus for operation of a converter

#79

20110001646

2011-01-06

Emulation of analog-to-digital converter characteristics

#80

20100214855

2010-08-26

Methods of quantizing signals using variable reference signals

#81

20100171644

2010-07-08

Analog digital converters and image sensors including the same

#82

20100123610

2010-05-20

Devices including analog-to-digital converters for internal data storage locations

#83

20100103012

2010-04-29

Multi-stage resettable sigma-delta converters

#84

20100033360

2010-02-11

Low cost analog to digital converter and a method for converting an analog signal to a digital signal

#85

20090237280

2009-09-24

Method, system and apparatus for dual mode operation of a converter

#86

20090128385

2009-05-21

Resettable high order delta-sigma analog to digital converter

#87

20090079607

2009-03-26

Chopper-stabilized analog-to-digital converter

#88

20090027249

2009-01-29

A/D converters based on sigma delta modulators and iterative methods

#89

20080310221

2008-12-18

Reference current sources

#90

20080309539

2008-12-18

Quantizing circuits with variable reference signals

#91

20080309534

2008-12-18

Quantizing circuits for semiconductor devices

#92

20080309533

2008-12-18

Comparators for delta-sigma modulators

#93

20080074303

2008-03-27

Incremental delta-sigma data converters with improved stability over wide input voltage ranges

#94

20070236373

2007-10-11

Sigma delta modulator

#95

20070222656

2007-09-27

Delta sigma modulator analog-to-digital converters with quantizer output prediction and comparator reduction

#96

20070182609

2007-08-09

Binary delta-sigma modulator

#97

20060033649

2006-02-16

Sigma Delta and converter with pseudo flash converter

#98

20050093732

2005-05-05

Semi-conductor circuit arrangement

#99

18667543

2025-07-29

Sigma-delta modulator for capacitive touch sensing channel

#100

17318991

2023-06-20

Transducer with analog and digital modulators

#101

16892193

2021-01-05

Circuits and methods providing a switched capacitor integrator

#102

16407247

2020-11-24

Digital filter

#103

16387050

2020-02-25

Open pin detection for analog-to-digital converter

#104

15689677

2018-12-04

Heterodyne-mimicking adapter

#105

15659231

2018-01-02

Multistage noise shaping sigma-delta modulator

#106

14873886

2017-04-18

Electronic circuit having dynamic resistance element

#107

14248035

2016-05-03

Use of microphone capacitance as a switched capacitor in an input network of a delta-sigma modulator