ClassID:

220462

H03H7/24 - CPC Classification

Classification description:

Multiple-port networks comprising only passive electrical elements as network components Frequency- independent attenuators

Sub-classes:
Recent Application in this class:
#1
20250350307
2025-11-13

METHOD AND APPARATUS TO OPTIMIZE POWER CLAMPING

#2
20250211259
2025-06-26

ATTENUATOR HAVING EXTENDED ATTENUATION RANGE

#3
20240430622
2024-12-26

GLITCH-LESS ACOUSTIC RANGE OPTIMIZATION FOR MICROPHONES

#4
20240429185
2024-12-26

STRUCTURES FOR SUPPRESSING ODD-MODE INSTABILITIES

#5
20240405741
2024-12-05

Distributed Attenuators With Uniform Electric Field

#6
20240275416
2024-08-15

Method and apparatus to optimize power clamping

#7
20240171147
2024-05-23

MATCHING CIRCUIT OF NEAR FIELD COMMUNICATION (NFC) DEVICE, RESONANCE CIRCUIT OF NFC DEVICE AND NFC DEVICE

#8
20230274862
2023-08-31

Thin Film Resistance Element and High-Frequency Circuit

#9
20230246622
2023-08-03

ELECTRONIC CIRCUIT

#10
20230238995
2023-07-27

Method and apparatus to optimize power clamping

#11
20220407490
2022-12-22

Wideband signal attenuator

#12
20220341974
2022-10-27

Attenuator and differential voltage probe

#13
20220014221
2022-01-13

Method and apparatus to optimize power clamping

#14
20210313967
2021-10-07

Digital step attenuator

#15
20210050184
2021-02-18

Apparatus for monitoring pulsed high-frequency power and substrate processing apparatus including the same

#16
20200355730
2020-11-12

Thru-line directional power sensor having microstrip coupler

#17
20200177164
2020-06-04

Radio Frequency Signal Attenuator And Method of Operation Thereof

#18
20200083858
2020-03-12

RF signal aggregator and antenna system implementing the same

#19
20200035901
2020-01-30

Cryogenic device with multiple transmission lines and microwave attenuators

#20
20200006832
2020-01-02

Thermalization of microwave attenuators for quantum computing signal lines

#21
20190214303
2019-07-11

High frequency attenuator

#22
20190140442
2019-05-09

Inrush Limit of Self-Regulating Heating Cables

#23
20190140357
2019-05-09

Electromagnetic energy shielding systems, apparatuses, and methods

#24
20190131956
2019-05-02

Reduced transistor bridge attenuator

#25
20190115899
2019-04-18

RF signal aggregator and antenna system implementing the same

#26
20190036508
2019-01-31

Variable frequency filter, radio frequency front-end circuit, and communication terminal

#27
20180287261
2018-10-04

Radio frequency surface wave attenuator structures and associated methods

#28
20180269922
2018-09-20

Front-end module

#29
20180262181
2018-09-13

Temperature compensated digital step attenuator

#30
20180106838
2018-04-19

Thru-line directional power sensor having microstrip coupler

#31
20180102763
2018-04-12

Temperature compensated digital step attenuator

#32
20180091112
2018-03-29

DEVICE FOR ATTENUATING ELECTROMAGNETIC WAVE AND REDUCING SIDE EFFECTS USING LONGITIDINAL WAVE

#33
20180013188
2018-01-11

Apparatuses and methods for signal coupling

#34
20170310294
2017-10-26

Common mode filter

#35
20170257074
2017-09-07

Low-noise, ultra-low temperature dissipative devices

#36
20170217385
2017-08-03

Circuit arrangement

#37
20170201827
2017-07-13

Headphone driver, a sound system that incorporates the headphone driver and a computing system that incorporates the headphone driver

#38
20170179560
2017-06-22

Terminator and termination method

#39
20170103871
2017-04-13

APPARATUS FOR MONITORING PULSED HIGH-FREQUENCY POWER AND SUBSTRATE PROCESSING APPARATUS INCLUDING THE SAME

#40
20160344447
2016-11-24

Attenuator and signal generator for stepwise attenuating a radio frequency signal

#41
20160268991
2016-09-15

Radio frequency (RF) series attenuator module for bridging two RF transmission lines on adjacent circuit substrates

#42
20160238634
2016-08-18

High voltage divider

#43
20160193461
2016-07-07

Coiled, closed-loop RF current attenuator configured to be placed about an implantable lead conductor

#44
20160173063
2016-06-16

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

#45
20160164486
2016-06-09

Transformer filter arrangement

#46
20160112032
2016-04-21

Reflective vector modulators

#47
20160079970
2016-03-17

Resistive divider circuit for a differential signal communications receiver

#48
20160079949
2016-03-17

Resistor attenuator with switch distortion cancellation

#49
20160043456
2016-02-11

Radio-frequency switches having extended termination bandwidth and related circuits, modules, methods, and systems

#50
20150381139
2015-12-31

Calibration of step attenuator

#51
20150381066
2015-12-31

Power supplies having multi-tap voltage attenuators and methods of power supply assembly

#52
20150365063
2015-12-17

LUMPED ELEMENT FREQUENCY SELECTIVE LIMITERS

#53
20150244399
2015-08-27

Ultra-broadband programmable hybrid step attenuator

#54
20150214836
2015-07-30

Voltage divider circuit having at least two kinds of unit resistors

#55
20150155848
2015-06-04

High-frequency device and directional coupler

#56
20150108210
2015-04-23

RFID positioning and tracking apparatus and methods

#57
20150091668
2015-04-02

System and method for a radio frequency coupler

#58
20140159701
2014-06-12

Adaptive voltage divider with corrected frequency characteristic for measuring high voltages

#59
20140146240
2014-05-29

Circuit board

#60
20140077924
2014-03-20

RF resistor with lossy traces

#61
20130300523
2013-11-14

Selective variable attenuation circuitry and associated methods

#62
20130181792
2013-07-18

Attenuator

#63
20130169386
2013-07-04

Attenuator

#64
20130113575
2013-05-09

Radio-frequency switches having extended termination bandwidth and related circuits, modules, methods, and systems

#65
20130088403
2013-04-11

Low phase variation CMOS digital attenuator

#66
20130038396
2013-02-14

Radio frequency amplifier in communication system and method of controlling the same

#67
20120293233
2012-11-22

Broadband analog radio-frequency integrator

#68
20120235751
2012-09-20

Semiconductor device

#69
20120154076
2012-06-21

Attenuator

#70
20120135698
2012-05-31

Programmable attenuator

#71
20120105134
2012-05-03

Method and Device for Sharing Pin and Functional Device Using the Same

#72
20120075017
2012-03-29

Attenuator

#73
20120013420
2012-01-19

Absorber unit for a bus system

#74
20110248730
2011-10-13

Electric power metering device and method

#75
20110025452
2011-02-03

Method and circuit for recycling trimmed devices

#76
20100271126
2010-10-28

Matched integrated electronic components

#77
20100201476
2010-08-12

Digital potentiometer architecture with multiple string arrays allowing for independent calibration in rheostat mode

#78
20100164656
2010-07-01

Integrated digitally controlled linear-in-decibels attenuator

#79
20100134206
2010-06-03

Step attenuator circuit with improved insertion loss

#80
20100045372
2010-02-25

Amplification circuit, amplification circuit noise reducing method and program thereof

#81
20090322310
2009-12-31

Self-calibration circuit with gyrated output impedance

#82
20090258626
2009-10-15

Filter circuit and receiving apparatus

#83
20090231069
2009-09-17

Compensated attenuator circuit and oscilloscope utilizing the same

#84
20090231067
2009-09-17

Temperature compensation attenuator

#85
20090134893
2009-05-28

Test instrument probe with MEMS attenuator circuit

#86
20090085579
2009-04-02

ATTENUATION APPARATUS AND TEST APPARATUS

#87
20090072931
2009-03-19

Integrated digitally controlled linear-in-decibels attenuator

#88
20090039955
2009-02-12

Variable resistor, filter, variable gain amplifier and integrated circuit using the variable resistor

#89
20090009266
2009-01-08

Antenna damping circuit and high frequency receiver employing same

#90
20080224798
2008-09-18

Active step attenuator

#91
20080157898
2008-07-03

Low-pass step attenuator

#92
20080143460
2008-06-19

Attenuator and step attenuation device having the same

#93
20080036536
2008-02-14

System and method for linearizing a CMOS differential pair

#94
20070273354
2007-11-29

Control circuit for diode based RF circuits

#95
20070257744
2007-11-08

Interpolating programmable gain attenuator

#96
20070229200
2007-10-04

Attenuator

#97
20070187804
2007-08-16

Monolithic integrated circuit

#98
20070164731
2007-07-19

Wide bandwidth attenuator input circuit for a measurement probe

#99
20070164730
2007-07-19

Wide bandwidth attenuator input circuit for a measurement probe

#100
20070142016
2007-06-21

System and method for providing distributed gain

#101
20060284681
2006-12-21

Wide bandwidth attenuator input circuit for a measurement probe

#102
20060269186
2006-11-30

High-impedance attenuator

#103
20060244548
2006-11-02

Attenuator system

#104
20060214763
2006-09-28

Potentiometer system and method

#105
20060114078
2006-06-01

Electronic volume

#106
20050285660
2005-12-29

Frequency-independent voltage divider

#107
20050270043
2005-12-08

Digital potentiometer with resistor binary weighting decoding

#108
20050206495
2005-09-22

High voltage variable resistor device

#109
20050151512
2005-07-14

Minimizing end boundary resistance in a programmable resistor of an integrated circuit

#110
20050093644
2005-05-05

Interpolating programmable gain attenuator

#111
20050093643
2005-05-05

Interpolating programmable gain attenuator

#112
18081565
2025-11-25

Low-rate wireless personal area network (LR-WPAN) preamble detection in the presence of concurrently transmitted wireless signals

#113
16534906
2020-07-14

Delay compensation using broadband gain equalizer

#114
15866015
2018-12-11

High frequency attenuator

#115
15656852
2019-02-26

Sensitivity radio frequency (RF) receiver front-end using MEMS switches, RF communications device and method

#116
14451378
2016-05-24

Power line communication filter for multiple conductors