ClassID:

218977

H03D3/008 - CPC Classification

Classification description:

Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals Compensating DC offsets

Recent Application in this class:
#1
20250309827
2025-10-02

DC OFFSET CALIBRATION IN AN INTERDEPENDENT QUADRATURE RECEIVER

#2
20250202428
2025-06-19

IQ PHASE IMBALANCE CALIBRATION USING SAMPLING CLOCK DELAY ADJUSTMENT

#3
20250007463
2025-01-02

CIRCUIT AND METHOD TO DETECT FAULTS OF A MEMS DEVICE INCLUDING AN OSCILLATING MASS

#4
20240187112
2024-06-06

DIRECT CURRENT OFFSET CALIBRATION DEVICE ON THE RECEIVING PATH AND DIRECT CURRENT OFFSET CALIBRATION METHOD THEREOF

#5
20220407460
2022-12-22

Current mode signal path of an integrated radio frequency pulse generator

#6
20220173756
2022-06-02

DC offset compensation in zero-intermediate frequency mode of a receiver

#7
20200186088
2020-06-11

Mixer module

#8
20190296691
2019-09-26

Lower power auto-zeroing receiver incorporating CTLE, VGA, and DFE

#9
20190173698
2019-06-06

DIRECT CURRENT REMOVAL CIRCUIT

#10
20190115987
2019-04-18

Method for suppressing local oscillator leakage in microwave chip and apparatus thereof

#11
20190097664
2019-03-28

Dynamic high-pass filter cut-off frequency adjustment

#12
20190089305
2019-03-21

DC offset correction in an antenna aperture

#13
20190089050
2019-03-21

RF ripple correction in an antenna aperture

#14
20190007076
2019-01-03

Method and apparatus to detect lo leakage and image rejection using a single transistor

#15
20180054262
2018-02-22

Device and method for determining a DC component

#16
20160380788
2016-12-29

Systems and methods to dynamically calibrate and adjust gains in a direct conversion receiver

#17
20160269208
2016-09-15

Module for a radio receiver

#18
20160056764
2016-02-25

Method and apparatus to detect LO leakage and image rejection using a single transistor

#19
20150365128
2015-12-17

Transmitter local oscillator leakage suppression

#20
20150271005
2015-09-24

Phase imbalance calibration

#21
20150207532
2015-07-23

System and method for a mixer

#22
20140171008
2014-06-19

Leakage calibration for a frequency converter

#23
20140120851
2014-05-01

DC offset filter for wide band beamforming receivers

#24
20130122847
2013-05-16

Harmonic reject receiver architecture and mixer

#25
20130107925
2013-05-02

DOWN CONVERTER WITH OFFSET CANCELLATION AND METHODS FOR USE THEREWITH

#26
20120302193
2012-11-29

Harmonic reject receiver architecture and mixer

#27
20120302192
2012-11-29

Harmonic reject receiver architecture and mixer

#28
20120300887
2012-11-29

Harmonic reject receiver architecture and mixer

#29
20110207418
2011-08-25

Methods and apparatus for measuring and/or using transmitter and/or receiver IQ imbalance information and/or DC offset information

#30
20110189969
2011-08-04

Receiver arrangement with AC coupling

#31
20110134334
2011-06-09

Systems and methods providing spur avoidance in a direct conversion tuner architecture

#32
20110009080
2011-01-13

Receiver architecture with digitally generated intermediate frequency

#33
20100225820
2010-09-09

INTEGRATED ANALOG VIDEO RECEIVER

#34
20100003943
2010-01-07

Harmonic reject receiver architecture and mixer

#35
20090323864
2009-12-31

Single ended multiband feedback linearized RF amplifier and mixer with DC-offset and IM2 suppression feedback loop

#36
20090305656
2009-12-10

Direct conversion receiver and DC offset concellation method

#37
20090225911
2009-09-10

Methods and apparatus to improve distortion performance and direct current (DC) offset cancellation in receivers

#38
20090185079
2009-07-23

Integrated analog video receiver

#39
20090180565
2009-07-16

System for, and method of, processing quadrature amplitude modulated signals

#40
20090163159
2009-06-25

Radio receiver, audio system, and method of manufacturing radio receiver

#41
20090066548
2009-03-12

Method and system for compensation of DC offset in an RF receiver

#42
20090004983
2009-01-01

Method and system for a second order input intercept point (IIP2) correction

#43
20080297664
2008-12-04

Integrated analog video receiver

#44
20080297206
2008-12-04

Dc Offset Estimation

#45
20080266059
2008-10-30

Quadrature demodulator and interrogator

#46
20080207157
2008-08-28

Low intermediate frequency receiver and the same method thereof

#47
20080158433
2008-07-03

Video receiver with DC offset cancellation

#48
20080130607
2008-06-05

Method and System for Multimode DC Offset Compensation

#49
20080123785
2008-05-29

Methods and apparatus for simultaneous automatic gain, phase and DC offset correction in communication receivers

#50
20080090545
2008-04-17

Signal processing unit

#51
20080062334
2008-03-13

Apparatus and method for restoring DC spectrum for analog television reception using direct conversion tuners

#52
20080051051
2008-02-28

Local oscillator apparatus and method

#53
20080020725
2008-01-24

Digital baseband receiver with DC discharge and gain control circuits

#54
20080014873
2008-01-17

METHODS AND APPARATUS FOR ADAPTIVE LOCAL OSCILLATOR NULLING

#55
20080007336
2008-01-10

Method and device for the reduction of the DC component of a signal transposed into baseband, in particular in a receiver of the direct conversion type

#56
20070297536
2007-12-27

DC OFFSET REMOVAL APPARATUS AND DC OFFSET REMOVAL METHOD

#57
20070293180
2007-12-20

DC offset correction for direct conversion receivers

#58
20070281647
2007-12-06

Receiver for use in wireless communications and method of operation of the receiver

#59
20070237264
2007-10-11

Hybrid DC-offset reduction method and system for direct conversion receiver

#60
20070224960
2007-09-27

RADIO RECEIVER AND RADIO SIGNAL PROCESSING METHOD

#61
20070190957
2007-08-16

DC removal techniques for wireless networking

#62
20070117507
2007-05-24

Integrated direct conversion satellite tuner

#63
20070111673
2007-05-17

Radio apparatus

#64
20070105522
2007-05-10

Offset balancer, method of balancing an offset and a wireless receiver employing the balancer and the method

#65
20070105519
2007-05-10

Adaptive intermodulation distortion filter for zero-if receivers

#66
20070072571
2007-03-29

DC offset cancellation circuit for a receiver

#67
20070071144
2007-03-29

AC coupling bandwidth switch

#68
20070047634
2007-03-01

Method and apparatus for self-calibration in a mobile transceiver

#69
20070010223
2007-01-11

Digital baseband receiver with DC discharge and gain control circuits

#70
20070004355
2007-01-04

Apparatus, system, and method for multi-class wireless receiver

#71
20060281427
2006-12-14

Frequency change arrangement and radio frequency tuner

#72
20060239388
2006-10-26

DC offset detection and cancellation in a receiver

#73
20060229043
2006-10-12

Direct conversion receiver circuit

#74
20060227910
2006-10-12

Receiver DC offset correction

#75
20060223472
2006-10-05

DC cancellation circuit

#76
20060222117
2006-10-05

DC offset correction system for a receiver with baseband gain control

#77
20060160519
2006-07-20

Direct-conversion receiver system and method, especially a GPS receiver system with high pass filtering

#78
20060160518
2006-07-20

Harmonic reject receiver architecture and mixer

#79
20060146927
2006-07-06

System for, and method of, processing quadrature amplitude modulated signals

#80
20060135111
2006-06-22

Radio receiver DC offset cancellation via ADC input bias

#81
20060121871
2006-06-08

Apparatus for frequency direct conversion reception in mobile communication terminal and method thereof

#82
20060105735
2006-05-18

Method and system for compensation of DC offset in an RF receiver

#83
20060105731
2006-05-18

Circuit and method for reducing direct current biases

#84
20060094387
2006-05-04

Method and system for process, voltage, and temperature (PVT) measurement and calibration

#85
20060094386
2006-05-04

Method and system for a second order input intercept point (IIP2) calibration scheme

#86
20060094377
2006-05-04

Method and system for output common mode control for reducing DC offset for an IF mixer that downconverts a received signal to DC without introducing additional offset

#87
20060094361
2006-05-04

Method and system for a second order input intercept point (IIP2) correction

#88
20060093072
2006-05-04

Method and system for process, voltage, and temperature (PVT) correction

#89
20060083335
2006-04-20

Receiver architecture with digitally generated intermediate frequency

#90
20060045216
2006-03-02

Apparatus and method for automatic frequency correction for a receiver system

#91
20060034356
2006-02-16

Transmission/reception arrangement and method for reducing nonlinearities in output signals from a transmission/reception arrangement

#92
20050272396
2005-12-08

Angle demodulation apparatus, local oscillation apparatus, angle demodulation method, local oscillation signal generating method, recording medium and computer data signal

#93
20050271163
2005-12-08

Analog DC compensation

#94
20050250459
2005-11-10

Compensation of a DC offset in a receiver

#95
20050243220
2005-11-03

Video receiver with reduced power mode

#96
20050243219
2005-11-03

Integrated analog video receiver

#97
20050243218
2005-11-03

Video receiver with adaptive image rejection

#98
20050243217
2005-11-03

Video receiver with DC offset cancellation

#99
20050239499
2005-10-27

Communication semiconductor integrated circuit and radio communication system

#100
20050197089
2005-09-08

Apparatus and method for dynamic DC offset detection and cancellation using high pass filter with variable impedance and corner frequency

#101
20050180528
2005-08-18

Method and apparatus for down conversion of radio frequency (RF) signals

#102
20050174166
2005-08-11

System for tuning a corner frequency of a low pass filter

#103
20050157815
2005-07-21

Apparatus for compensating DC offsets, gain and phase imbalances between I-channel and Q-channel in quadrature transceiving system

#104
20050153676
2005-07-14

Method and apparatus for minimizing baseband offset error in a receiver

#105
20050143032
2005-06-30

DC offset cancel circuit

#106
20050143028
2005-06-30

DC offset-free RF front-end circuits and systems for direct conversion receivers

#107
20050110550
2005-05-26

DC offset cancellation in a direct-conversion receiver

#108
20050105648
2005-05-19

Coherent adaptive calibration system and method

#109
20050075815
2005-04-07

On-signal quadrature modulator calibration

#110
20050070240
2005-03-31

Receiver arrangement with AC coupling

#111
20050058221
2005-03-17

Additive DC component detection included in an input burst signal

#112
20050042994
2005-02-24

Radio apparatus

#113
20050024541
2005-02-03

Apparatus and method for restoring DC spectrum for analog television reception using direct conversion turners

#114
20050018788
2005-01-27

Method and apparatus for RF carrier feedthrough suppression

#115
20050009493
2005-01-13

DC offset correction for very low intermediate frequency receiver

#116
20050009489
2005-01-13

Radio receiver and radio signal processing method with controlling gain

#117
20050003853
2005-01-06

Multiband receiver and method associated therewith

#118
20050003777
2005-01-06

Digital baseband receiver with DC discharge and gain control circuits

#119
13601092
2015-02-17

Direct conversion receiver for angle modulated signals