H03F2200/423 - page 2 - CPC Classification Index

ClassID:

219638 ⎘

H03F2200/423 - page 2 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers Amplifier output adaptation especially for transmission line coupling purposes, e.g. impedance adaptation

Recent Application in this class:

#301

20070057722

2007-03-15

Power amplification apparatus of a portable terminal

#302

20070040630

2007-02-22

Electronic circuit unit having low transmission loss

#303

20070024376

2007-02-01

Radio frequency power amplifier module

#304

20070024358

2007-02-01

Semiconductor power device and RF signal amplifier

#305

20070008032

2007-01-11

Power amplifier and transmitter

#306

20070001300

2007-01-04

Semiconductor device

#307

20060246855

2006-11-02

Wireless transmitter and amplifier

#308

20060139091

2006-06-29

Power amplifier employing thin film ferroelectric phase shift element

#309

20060114060

2006-06-01

Composite amplifier structure

#310

20060063508

2006-03-23

Miniature bidirectional amplifier

#311

20060028278

2006-02-09

Radio frequency power amplifier module

#312

20060017500

2006-01-26

Composite power amplifier

#313

20050269590

2005-12-08

Semiconductor device

#314

20050248401

2005-11-10

Composite power amplifier

#315

20050093626

2005-05-05

Radio frequency power amplifier module

#316

20050069027

2005-03-31

Transmitter

#317

20050012547

2005-01-20

High linearity doherty communication amplifier with phase control

#318

15966935

2019-08-06

Wideband distributed power amplifier utilizing metamaterial transmission line conception with impedance transformation

#319

15962672

2019-06-11

Compact doherty power amplifier using non-uniform phase match devices

#320

15289860

2018-01-02

Power amplifier circuit and method of design

#321

15184823

2017-08-15

Minimizing impedence mismatch effects in a wireless device