Patents-Review.com
ClassID:

221106 ⎘

H03H2210/04 - CPC Classification

Classification description:

Indexing scheme relating to details of tunable filters Filter calibration method

Sub-classes:
Recent Application in this class:
#1
20250167753
2025-05-22

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

 #2
20230142184
2023-05-11

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

 #3
20220076869
2022-03-10

Advanced 3D inductor structures with confined magnetic field

 #4
20210099151
2021-04-01

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

 #5
20200091868
2020-03-19

Method and apparatus for calibration of a band-pass filter and squelch detector in a frequency-shift keying transceiver

 #6
20200035395
2020-01-30

Advanced 3D inductor structures with confined magnetic field

 #7
20190393853
2019-12-26

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

 #8
20180351535
2018-12-06

Active biquad filter with oscillator circuit

 #9
20180316321
2018-11-01

Weakly coupled tunable RF receiver architecture

 #10
20180123563
2018-05-03

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

 #11
20180019045
2018-01-18

Advanced 3D inductor structures with confined magnetic field

 #12
20180006628
2018-01-04

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

 #13
20170272056
2017-09-21

Acoustic-wave device with active calibration mechanism

 #14
20170271743
2017-09-21

Acoustic-wave device with active calibration mechanism

 #15
20170033815
2017-02-02

Reconfigurable RF filter

 #16
20160359511
2016-12-08

Passive voltage-gain network

 #17
20160359510
2016-12-08

RX shunt switching element-based RF front-end circuit

 #18
20160233916
2016-08-11

Systems and methods for low pass filter mismatch calibration

 #19
20160233846
2016-08-11

Integrated calibration circuit and a method for calibration of a filter circuit

 #20
20160173057
2016-06-16

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

 #21
20160020750
2016-01-21

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

 #22
20150084717
2015-03-26

Measurement device, semiconductor device and impedance adjustment method

 #23
20150048896
2015-02-19

System and method for tuning an RF circuit

 #24
20150038101
2015-02-05

Weakly coupled tunable RF receiver architecture

 #25
20150038094
2015-02-05

VSWR detector for a tunable filter structure

 #26
20150035637
2015-02-05

Advanced 3D inductor structures with confined magnetic field

 #27
20150035622
2015-02-05

Interference rejection RF filters

 #28
20150035617
2015-02-05

Cooperative tunable RF filters

 #29
20150035612
2015-02-05

Calibration for a tunable RF filter structure

 #30
20140364077
2014-12-11

Multi-band interference optimization

 #31
20140361856
2014-12-11

High quality factor interconnect for RF circuits

 #32
20140361852
2014-12-11

Tunable RF filter paths for tunable RF filter structures

 #33
20140361849
2014-12-11

Tunable RF filter based RF communications system

 #34
20140361848
2014-12-11

Tunable RF filter structure formed by a matrix of weakly coupled resonators

 #35
20140361839
2014-12-11

Nonlinear capacitance linearization

 #36
20140340173
2014-11-20

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

 #37
20140292400
2014-10-02

Filter auto-calibration using multi-clock generator

 #38
20130040595
2013-02-14

Circuit for a front-end tunable filter of a communication and broadcast receiver and a tuning method thereof

 #39
20120313731
2012-12-13

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

 #40
20120293233
2012-11-22

Broadband analog radio-frequency integrator

 #41
20120098592
2012-04-26

Filter auto-calibration using multi-clock generator

 #42
20120095715
2012-04-19

In-situ RC-calibration scheme for active RC filter

 #43
20120026024
2012-02-02

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

 #44
20110166817
2011-07-07

Method for calibrating frequency of g-C filter and devices using the method

 #45
20100219883
2010-09-02

Active filter calibration method and apparatus

 #46
20100201438
2010-08-12

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

 #47
20100164648
2010-07-01

INNOVATIVE CALIBRATION CIRCUIT AND METHOD FOR HIGH-FREQUENCY ACTIVE FILTERS

 #48
20080252365
2008-10-16

Apparatus and method for tuning center frequency of a filter

 #49
20070262813
2007-11-15

Filter calibration with cell re-use

 #50
20070115070
2007-05-24

Apparatus and method for tuning center frequency of a filter

 #51
20070105521
2007-05-10

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

 #52
20060049899
2006-03-09

Tunable poly-phase filter and method for calibration thereof

 #53
20050148309
2005-07-07

Automatic tuning apparatus for filter and communication instrument

 #54
16948887
2021-12-14

Apparatus and methods for control and calibration of tunable filters

 #55
16450083
2020-11-03

Ring oscillator based RC calibration circuit

 #56
16039383
2020-08-25

MHz range harmonic impedance tuner and method

 #57
15441052
2019-11-05

Inverter-based filter biasing with ring oscillator-based supply regulation