IPC Subgroup
H04L 27/22 Demodulator circuits; Receiver circuits
Introduced: September 1968
Last revised: January 2006
Full Title
Modulated-carrier systems > Phase-modulated carrier systems, i.e. using phase-shift keying > Demodulator circuits; Receiver circuits
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2 direct subcodes
Child Classifications
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- H04L 27/227 using coherent demodulation
- H04L 27/233 using non-coherent demodulation