H03C3/225 - CPC Classification Index

ClassID:

218893 ⎘

H03C3/225 - CPC Classification

Classification description:

Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode using field effect transistors

Recent Application in this class:

20130022086

2013-01-24

Ultra-wideband impulse radio transmitter with modulation

20120313702

2012-12-13

Dual rail out-phased envelope tracking modulator

20090108898

2009-04-30

Methods and apparatus for improved phase switching and linearity in an analog phase interpolator

20090102573

2009-04-23

Modulation circuit

20090079524

2009-03-26

MULTI-BAND TUNABLE RESONANT CIRCUIT

20080150648

2008-06-26

Direct modulation type voltage-controlled oscillator using MOS varicap

20080030251

2008-02-07

Methods and apparatus for improved phase switching and linearity in an analog phase interpolator

20080012648

2008-01-17

Communications system with variable load and related method

20060220719

2006-10-05

Methods and apparatus for improved phase switching and linearity in an analog phase interpolator

#10

20050261797

2005-11-24

Multi-band tunable resonant circuit

#11

20050227627

2005-10-13

Programmable radio transceiver

#12

20050212604

2005-09-29

Programmable radio transceiver