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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H03C 7/02

in transmission lines, waveguides, cavity resonators or radiation fields of antennas

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Modulating electromagnetic waves > in transmission lines, waveguides, cavity resonators or radiation fields of antennas

CPC:

Modulating electromagnetic waves (devices or arrangements for the modulation of light G02F1/00) > in transmission lines, waveguides, cavity resonators or radiation fields of antennas

CPC subdivides this area 3x more granularly than IPC with 2 additional codes.

2 codes are CPC-only extensions.

Child Classifications

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  • H03C 7/022 CPC only CPC only
  • H03C 7/04 Polarisation of transmitted wave being modulated IPC+CPC Available in IPC and CPC