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