ClassID:

221095

H03H2210/015 - CPC Classification

Classification description:

Indexing scheme relating to details of tunable filters; Tuned parameter of filter characteristics Quality factor or bandwidth

Recent Application in this class:
#1
20250309854
2025-10-02

ELECTRONIC COMPONENT

#2
20250260390
2025-08-14

RADIO FREQUENCY MODULE WITH TUNABLE ACOUSTIC FILTER PASSBAND

#3
20250167753
2025-05-22

METHOD, SYSTEM, AND APPARATUS FOR RESONATOR CIRCUITS AND MODULATING RESONATORS

#4
20250055443
2025-02-13

APPARATUS AND METHOD FOR CONTROLLING A RESONATOR

#5
20230361745
2023-11-09

MULTI-TUNE FILTER AND CONTROL THEREFOR

#6
20230142184
2023-05-11

Method, system, and apparatus for resonator circuits and modulating resonators

#7
20220200574
2022-06-23

Apparatus and method for controlling a resonator

#8
20220085778
2022-03-17

Low-power and area-efficient gain-bandwidth tripler amplifier

#9
20210391849
2021-12-16

Tunable bandpass filter with high stability and orthogonal tuning

#10
20210099151
2021-04-01

Method, system, and apparatus for resonator circuits and modulating resonators

#11
20210067125
2021-03-04

Fast frequency switching in a resonant high-Q analog filter

#12
20200321942
2020-10-08

Tunable filter for RF circuits

#13
20200153410
2020-05-14

Apparatus and method for controlling a resonator

#14
20190393853
2019-12-26

Method, system, and apparatus for resonator circuits and modulating resonators

#15
20190245522
2019-08-08

Method and device for adjusting passband width of filter

#16
20190214953
2019-07-11

High linearly WiGig baseband amplifier with channel select filter

#17
20190190495
2019-06-20

Reconfigurable microacoustic filter and duplexer comprising a reconfigurable microacoustic filter

#18
20190190481
2019-06-20

LC filter, radio-frequency front-end circuit, and communication device

#19
20190165765
2019-05-30

Filter device and multiplexer

#20
20190013796
2019-01-10

Tunable filter for RF circuits

#21
20180351535
2018-12-06

Active biquad filter with oscillator circuit

#22
20180323770
2018-11-08

Variable filter

#23
20180123563
2018-05-03

Method, System, and Apparatus for Resonator Circuits and Modulating Resonators

#24
20180006628
2018-01-04

Method, system, and apparatus for resonator circuits and modulating resonators

#25
20170149411
2017-05-25

Variable filter

#26
20170093370
2017-03-30

Tunable compensation circuit for filter circuitry using acoustic resonators

#27
20160173057
2016-06-16

Method, system, and apparatus for resonator circuits and modulating resonators

#28
20160065165
2016-03-03

Tunable filter

#29
20160020750
2016-01-21

Method, system, and apparatus for resonator circuits and modulating resonators

#30
20150214985
2015-07-30

Tunable radio frequency (RF) front-end architecture using filter having adjustable inductance and capacitance

#31
20150042402
2015-02-12

Distortion measurement and correction system and method

#32
20140340173
2014-11-20

Method, system, and apparatus for resonator circuits and modulating resonators

#33
20140012888
2014-01-09

Systems and methods for filter initialization and tuning

#34
20130049849
2013-02-28

Filter system capable of automatically adjusting bandwidth and method of automatically adjusting bandwidth of a filter

#35
20120313731
2012-12-13

Method, system, and apparatus for resonator circuits and modulating resonators

#36
20120288045
2012-11-15

SIGNAL RECEIVING APPARATUS AND METHOD OF CONTROLLING FILTERS IN SIGNAL RECEIVING APPARATUS

#37
20120194265
2012-08-02

Semiconductor integrated circuit and operation method of the same

#38
20120171978
2012-07-05

Methods and systems for interference rejection for low signals

#39
20120075012
2012-03-29

Systems and methods for filter initialization and tuning

#40
20120075011
2012-03-29

Tunable biquad filter circuit including phase shift detection and methods for using such

#41
20120062798
2012-03-15

TV SIGNAL DISTRIBUTION FILTER HAVING PLANAR INDUCTORS

#42
20110187448
2011-08-04

Wideband analog bandpass filter

#43
20110115573
2011-05-19

BAND-PASS FILTER

#44
20100201438
2010-08-12

Notch filter and apparatus for receiving and transmitting radio-frequency signals incorporating same

#45
20100156562
2010-06-24

WIDEBAND VARIABLE FREQUENCY BAND PASS FILTER

#46
20090117867
2009-05-07

SCALABLE BANDWIDTH SYSTEM AND METHOD OF CONTROLLING TUNABLE FILTER

#47
20080287089
2008-11-20

INPUT FILTER FOR IMAGE FREQUENCY SUPPRESSION

#48
20080150626
2008-06-26

Time variant filter with reduced settling time

#49
20080136560
2008-06-12

Multi band pass filters

#50
20080096514
2008-04-24

Controlling the bandwidth of an analog filter

#51
20070105521
2007-05-10

Notch filter and apparatus for receiving and transmitting radio-frequency signals incorporating same

#52
20060290445
2006-12-28

Tunable resonator with MEMS element

#53
20060049899
2006-03-09

Tunable poly-phase filter and method for calibration thereof

#54
20060019626
2006-01-26

Programmable filter

#55
20050212612
2005-09-29

Tunable filter and portable telephone

#56
20050184828
2005-08-25

Tunable wideband bandpass filter, tunable multi-band bandpass filter using the same, and methods therefore

#57
14528644
2017-08-01

Systems and methods for tuning resonators