Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave

Introduced: September 1968

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01Q 13/02 Waveguide horns +7 CPC IPC+CPC Available in IPC and CPC
H01Q 13/06 Waveguide mouths (horns H01Q13/02) +1 CPC IPC+CPC Available in IPC and CPC
H01Q 13/08 Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines +1 CPC IPC+CPC Available in IPC and CPC
H01Q 13/10 Resonant slot antennas +2 CPC IPC+CPC Available in IPC and CPC
H01Q 13/20 Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave +2 CPC IPC+CPC Available in IPC and CPC