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IPC Subgroup
H04L 27/36

Modulator circuits; Transmitter circuits

Introduced: January 1990

Last revised: January 2006

Full Title

Modulated-carrier systems > Carrier systems characterised by combinations of two or more of the types covered by groups , , , or > Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems > Modulator circuits; Transmitter circuits

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION