CPC Subgroup
H04L 27/144 with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
Full Title
Modulated-carrier systems > Frequency-modulated carrier systems, i.e. using frequency-shift keying (H04L27/32 takes precedence) > Demodulator circuits; Receiver circuits > with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
2 direct subcodes
Child Classifications
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- H04L 27/148 using filters, including PLL-type filters
- H04L 27/152 using controlled oscillators, e.g. PLL arrangements