ClassID:

226086

H04L27/3881 - CPC Classification

Classification description:

Modulated-carrier systems; Carrier systems characterised by combinations of two or more of the types covered by groups , , or; Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems; Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using sampling and digital processing, not including digital systems which imitate heterodyne or homodyne demodulation

Recent Application in this class:
#1
20230224199
2023-07-13

Phasor IQ demodulation

#2
20210135923
2021-05-06

Packet detection method and communication device

#3
20200280479
2020-09-03

Receiver, communication apparatus, method and computer program

#4
20200235968
2020-07-23

COMMUNICATION DEVICE AND METHOD FOR RECEIVING DATA VIA A RADIO SIGNAL

#5
20200169447
2020-05-28

Transporting digital data in a distributed antenna system

#6
20190356528
2019-11-21

Dynamic constellation adaptation for slicer

#7
20180198653
2018-07-12

Circuits for amplitude demodulation and related methods

#8
20170317871
2017-11-02

QPSK demodulator

#9
20160336989
2016-11-17

Low IF architectures for noncontact vital sign detection

#10
20160269208
2016-09-15

Module for a radio receiver

#11
20160020938
2016-01-21

Methods and systems for down-converting a signal using a complementary transistor structure

#12
20160013755
2016-01-14

Methods and systems for down-converting a signal

#13
20150349815
2015-12-03

Calculation of voltage standing wave ratio in radio device

#14
20150341196
2015-11-26

Method and system for down-converting and electromagnetic signal

#15
20150312085
2015-10-29

Method and system for down-converting an electromagnetic signal

#16
20150312084
2015-10-29

Method and system for down-converting an electromagnetic signal

#17
20150295536
2015-10-15

Methods and systems for down-converting a signal

#18
20150244551
2015-08-27

Method and system for down-converting an electromagnetic signal

#19
20140254652
2014-09-11

Digital broadcasting receiving system and associated signal processing method

#20
20120220254
2012-08-30

Methods and systems for down-converting a signal using a complementary transistor structure

#21
20120126877
2012-05-24

Demodulation mixing for a near field communications (NFC) device

#22
20110183640
2011-07-28

Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships

#23
20110151821
2011-06-23

Methods and systems for down-converting a signal using a complementary transistor structure

#24
20110122969
2011-05-26

Transmission apparatus, reception apparatus, transmission method, and reception method of wireless communication system

#25
20100156690
2010-06-24

Digital direct conversion receiving apparatus and method

#26
20100135368
2010-06-03

UPSAMPLING/INTERPOLATION AND TIME ALIGNMENT MECHANISM UTILIZING INJECTION OF HIGH FREQUENCY NOISE

#27
20090310717
2009-12-17

Signal converters

#28
20090279650
2009-11-12

METHOD AND APPARATUS FOR GENERATING CLOCK SIGNALS FOR QUADRATURE SAMPLING

#29
20090232255
2009-09-17

QAM symbol slicing method and apparatus

#30
20090203345
2009-08-13

Method and system for down-converting an electromagnetic signal, transforms for same, and aperture relationships

#31
20090103654
2009-04-23

Low intermediate frequency receiver

#32
20080272441
2008-11-06

Method and circuit for down-converting a signal

#33
20080182544
2008-07-31

Converting an electromagnetic signal via sub-sampling

#34
20080075192
2008-03-27

Multilevel QAM symbol timing detector and multilevel QAM communication signal receiver

#35
20080025437
2008-01-31

Quadrature bandpass-sampling delta-sigma communication receiver

#36
20070291884
2007-12-20

Oversampling and digitally filtering RFID signals

#37
20070200618
2007-08-30

IQ demodulator

#38
20070182604
2007-08-09

Sample selector time domain interpolation

#39
20060141975
2006-06-29

Methods and systems for down-converting a signal using a complementary transistor structure

#40
20050272395
2005-12-08

Method and circuit for down-converting a signal

#41
20050202797
2005-09-15

Methods and systems for down-converting a signal using a complementary transistor structure

#42
16996561
2022-03-08

Method and apparatus for characterizing homodyne transmitters and receivers

#43
16435633
2020-03-24

Quadrature signal imbalance estimation

#44
16291322
2020-06-16

Discrete time analog front end circuit implemented in a receiver device