H03D1/22 - CPC Classification Index

ClassID:

218955 ⎘

H03D1/22 - CPC Classification

Classification description:

Demodulation of amplitude-modulated oscillations Homodyne or synchrodyne circuits

Sub-classes:

H03D1/2209 » {Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders} 5
H03D1/2245 » {using two quadrature channels } 23
H03D1/2272 » {using FET's } 7
H03D1/2281 » {using a phase locked loop } 1
H03D1/229 » {using at least a two emittor-coupled differential pair of transistors } 6
H03D1/24 » for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed 6

Recent Application in this class:

20190207632

2019-07-04

Signal receiving apparatus and signal receiving method, signal generating apparatus and signal generating method

20190097664

2019-03-28

Dynamic high-pass filter cut-off frequency adjustment

20180343152

2018-11-29

Demodulator circuit and method for demodulation

20180198653

2018-07-12

Circuits for amplitude demodulation and related methods

20180159473

2018-06-07

Systems and methods for synchronous demodulation

20160134333

2016-05-12

Demodulators for near field communication, near field communication devices, and electronic devices having the same

20150350002

2015-12-03

Handling signals

20140242937

2014-08-28

Instrument LO used as alignment signal source

20120313697

2012-12-13

Apparatus and method for demodulating an input signal

#10

20120105211

2012-05-03

Apparatus and method for detecting RFID signals

#11

20120081822

2012-04-05

System and method for ESD protection

#12

20110065410

2011-03-17

Receiver with improved flicker noise performance

#13

20100132490

2010-06-03

Fully differential demodulator with variable gain, and method for demodulating a signal

#14

20090309652

2009-12-17

Demodulation circuit for ASK coded or amplitude modulated signals as wells as NFC and RFID devices comprising the same

#15

20080267313

2008-10-30

Dual demodulation mode AM radio

#16

20080224766

2008-09-18

Demodulation circuit

#17

20080197919

2008-08-21

Fully differential demodulator with variable gain, and method for demodulating a signal

#18

20080174925

2008-07-24

System and method for ESD protection