ClassID:

220852

H03H11/12 - CPC Classification

Classification description:

Networks using active elements; Multiple-port networks; Frequency selective two-port networks using amplifiers with feedback

Sub-classes:
Recent Application in this class:
#1
20250253828
2025-08-07

FILTERING DEVICE AND RADAR SENSOR INCLUDING THE SAME

#2
20250055443
2025-02-13

APPARATUS AND METHOD FOR CONTROLLING A RESONATOR

#3
20240313868
2024-09-19

ESTIMATION OF THE CUT-OFF FREQUENCY OF AN ELECTRONIC FILTER

#4
20240250664
2024-07-25

BAND PASS FILTER CIRCUIT AND SENSOR DEVICE INCLUDING THE SAME

#5
20230402986
2023-12-14

Passive active hybrid LC filter

#6
20220390418
2022-12-08

Active Temperature Compensation Technique for Structural Health Monitoring Sensors

#7
20220263496
2022-08-18

MULTISTAGE ACTIVE FILTER FOR AUTOMOTIVE APPLICATIONS

#8
20220200574
2022-06-23

Apparatus and method for controlling a resonator

#9
20210351764
2021-11-11

Signal output circuit and method

#10
20210313966
2021-10-07

ACTIVE ELECTROMAGNETIC INTERFERENCE (EMI) FILTER FOR COMMON-MODE EMI REDUCTION

#11
20210305968
2021-09-30

Active feedback analog filters with coupled resonators

#12
20210257994
2021-08-19

Filter, filtering method, and filter system

#13
20210105007
2021-04-08

Reconfigurable analog filter and integrated circuit including the same

#14
20200153410
2020-05-14

Apparatus and method for controlling a resonator

#15
20190273522
2019-09-05

Reception apparatus and reception method

#16
20190158067
2019-05-23

Filter Circuit with Programmable Gain and Frequency Response

#17
20190013794
2019-01-10

Polyphase filter and filter circuit

#18
20180254756
2018-09-06

Optical receiver

#19
20180054184
2018-02-22

Filtering system and an associated method thereof

#20
20170093448
2017-03-30

Output driver architecture with low spur noise

#21
20160173063
2016-06-16

Analog baseband filtering apparatus of multimode multiband wireless transceiver and control method thereof

#22
20160134258
2016-05-12

Switchable filtering circuit and the operation method using the same

#23
20160087602
2016-03-24

ADAPTIVE FEEDBACK FOR POWER DISTRIBUTION NETWORK IMPEDANCE BARRIER SUPPRESSION

#24
20160072442
2016-03-10

System and method for inductor isolation

#25
20150311882
2015-10-29

Filter assembly and a method of filtering

#26
20150236667
2015-08-20

Bandpass filter

#27
20140334057
2014-11-13

Apparatus and method for sectioning the phase conductors of an electric power distribution network

#28
20140328440
2014-11-06

Filter circuit and receiving apparatus

#29
20140247089
2014-09-04

Two stage source-follower based filter

#30
20130342268
2013-12-26

Active interference-noise cancellation device, and a method in relation thereto

#31
20130021092
2013-01-24

Ultra low cut-off frequency filter

#32
20120319767
2012-12-20

Single-ended-to-differential filter using common mode feedback

#33
20120161990
2012-06-28

Integrator and oversampling A/D converter having the same

#34
20120133347
2012-05-31

Efficiency-optimizing, calibrated sensorless power/energy conversion in a switch-mode power supply

#35
20120026024
2012-02-02

System for calibrating a time constant of an integrated circuit, and integrated circuit provided with such a system

#36
20120025847
2012-02-02

Method and system for measuring a time constant of an integrated circuit, and integrated circuit provided with such a system

#37
20110279175
2011-11-17

System and method for RC calibration using phase and frequency

#38
20110234310
2011-09-29

Second-order low-pass filter

#39
20110103518
2011-05-05

DC offset suppression circuit for a complex filter

#40
20110051782
2011-03-03

Method, system and apparatus for wideband signal processing

#41
20100244903
2010-09-30

TUNEABLE FILTER

#42
20080164767
2008-07-10

Apparatus for reducing apparent capacitance in high frequency filter for power line

#43
20070140391
2007-06-21

RF COMPLEX BANDPASS-NOTCH FILTER FOR RF RECEIVER AND TV TUNER

#44
20070024480
2007-02-01

Digital/analog converter and method for digital/analog conversion of a signal

#45
20060141957
2006-06-29

Controlling Q-factor of filters