H03F2200/138 - CPC Classification Index

ClassID:

219533 ⎘

H03F2200/138 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers the feedback circuit comprising a parallel resonance circuit

Recent Application in this class:

20250096749

2025-03-20

POWER AMPLIFIER CIRCUIT

20220247353

2022-08-04

Multi-element resonator

20220021360

2022-01-20

Trans-impedance amplifier, chip, and communications device

20210242832

2021-08-05

Multi-element resonator

20200220509

2020-07-09

Trans-impedance amplifier, chip, and communications device

20180241364

2018-08-23

Trans-impedance amplifier, chip, and communications device

20180241352

2018-08-23

Apparatus and method for improving efficiency of power amplifier

20160218683

2016-07-28

Logarithmic detector amplifier system in open-loop configuration for use as high sensitivity selective receiver without frequency conversion

20160056783

2016-02-25

Resonating device with single operational amplifier

#10

20140320212

2014-10-30

Radio frequency power amplifiers

#11

20140232463

2014-08-21

Class resonant-H electrosurgical generators

#12

20120249234

2012-10-04

Receiver

#13

20110143685

2011-06-16

Multiband low noise amplifier (LNA) with parallel resonant feedback

#14

20110115562

2011-05-19

Class resonant-H electrosurgical generators

#15

20050110572

2005-05-26

Amplifier; and transmitter and communication device incorporating the same

#16

15836191

2019-05-07

System and method for generating high-voltage radio frequency signals using an electronically tuned resonator