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DIFF Subgroup
H03D 7/18

Modifications of frequency-changers for eliminating image frequencies

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Transference of modulation from one carrier to another, e.g. frequency-changing > Modifications of frequency-changers for eliminating image frequencies

CPC:

Transference of modulation from one carrier to another, e.g. frequency-changing (H03D9/00, H03D11/00 take precedence; dielectric amplifiers, magnetic amplifiers, parametric amplifiers used as a frequency-changers H03F) > Modifications of frequency-changers for eliminating image frequencies

No child classifications to compare. This is a leaf node in both IPC and CPC.