H03F3/66 - CPC Classification Index

ClassID:

219498 ⎘

H03F3/66 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements Amplifiers simultaneously generating oscillations of one frequency and amplifying signals of another frequency

Recent Application in this class:

20240113668

2024-04-04

AMPLIFIER CIRCUIT AND RADIO FREQUENCY CIRCUIT

20230108702

2023-04-06

Disciplining crystals to synchronize timing of independent nodes

20220123779

2022-04-21

SYSTEMS AND METHODS FOR GENERATING RADIO FREQUENCY SIGNALS

20200295797

2020-09-17

Systems and methods for generating radio frequency signals

20200091879

2020-03-19

Power amplification system with reactance compensation

20180323758

2018-11-08

Power amplification system with reactance compensation

20170338781

2017-11-23

Power amplification system with reactance compensation

20170311077

2017-10-26

Audio signal correction and calibration for a room environment

20160316295

2016-10-27

Audio signal correction and calibration for a room environment

#10

20140161281

2014-06-12

Audio signal correction and calibration for a room environment

#11

20140118070

2014-05-01

Doherty amplifier circuit with phase-controlled load modulation

#12

20130154735

2013-06-20

RF power amplifier and operating method thereof

#13

20110050350

2011-03-03

Amplifier circuit

#14

20100052793

2010-03-04

Resonant operating mode for a transistor

#15

20080096498

2008-04-24

Multi-octave differential upconverter

#16

20070015473

2007-01-18

Modulator-amplifier

#17

20050152561

2005-07-14

Modulator—amplifier