CPC Subgroup
H04L 27/223 Full Title
Modulated-carrier systems > Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence) > Demodulator circuits; Receiver circuits
H04L 27/223 Modulated-carrier systems > Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence) > Demodulator circuits; Receiver circuits