Homodyne or synchrodyne circuits

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Demodulation of amplitude-modulated oscillations > Homodyne or synchrodyne circuits

CPC:

Demodulation of amplitude-modulated oscillations (H03D5/00, H03D9/00, H03D11/00 take precedence) > Homodyne or synchrodyne circuits

CPC subdivides this area 6x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

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H03D 1/2209 +3 CPC CPC only CPC only
H03D 1/2245 +1 CPC CPC only CPC only
H03D 1/2272 CPC only CPC only
H03D 1/2281 CPC only CPC only
H03D 1/229 CPC only CPC only
H03D 1/24 for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed IPC+CPC Available in IPC and CPC