Patents-Review.com
ClassID:

220897 ⎘

H03H11/40 - CPC Classification

Classification description:

Networks using active elements; Multiple-port networks Impedance converters

Sub-classes:
Recent Application in this class:
#1
20250239997
2025-07-24

ACOUSTIC IMPEDANCE INVERTER

 #2
20240128625
2024-04-18

Device and method for variable signal attenuation in wireless communication system

 #3
20210175874
2021-06-10

Mixer

 #4
20190245587
2019-08-08

Wireless transceiver

 #5
20190025425
2019-01-24

Ultrasonic measuring system, in particular for measuring distance and/or as a parking aid in vehicles

 #6
20180248534
2018-08-30

Impedance matching device

 #7
20170214391
2017-07-27

High rejection wideband bandpass N-path filter

 #8
20150381145
2015-12-31

Immittance conversion circuit and filter

 #9
20140191796
2014-07-10

Semiconductor device and command control method for the same

 #10
20130342239
2013-12-26

Invalid signal filtering method and shifter utilizing the method

 #11
20120026063
2012-02-02

Apparatus and method for matching impedance using standing wave ratio information

 #12
20100164645
2010-07-01

Tunable Impedance Matching Circuit

 #13
20100001803
2010-01-07

ELECTRONIC CIRCUIT FOR OBTAINING A VARIABLE CAPACITATIVE IMPEDENCE

 #14
20070247168
2007-10-25

Impedance conversion circuit and integrated circuit including thereof

 #15
20070229123
2007-10-04

Semiconductor device for microphone applications

 #16
20070009051
2007-01-11

Active impedance synthesis circuit, for example for XDSL splitters

 #17
20070007947
2007-01-11

Impedance conversion circuit and integrated circuit including thereof

 #18
20050107064
2005-05-19

Low-noise filter for a wireless receiver

 #19
14731178
2016-08-16

Method and apparatus to reconfigure a filter