DIFF Subgroup
H01Q 13/20 Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
Introduced: September 1968
Full Title
Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave > Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
Of 6 combined children, 4 exist in both systems.
2 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H01Q 13/22 Longitudinal slot in boundary wall of waveguide or transmission line IPC+CPC Available in IPC and CPC
- H01Q 13/24 constituted by a dielectric or ferromagnetic rod or pipe (H01Q13/28 takes precedence) IPC+CPC Available in IPC and CPC
- H01Q 13/26 Surface waveguide constituted by a single conductor, e.g. strip conductor IPC+CPC Available in IPC and CPC
- H01Q 13/28 comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements or conductive elements forming artificial dielectric IPC+CPC Available in IPC and CPC