CPC Subgroup
H01Q 13/24 constituted by a dielectric or ferromagnetic rod or pipe (H01Q13/28 takes precedence)
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 > constituted by a dielectric or ferromagnetic rod or pipe (H01Q13/28 takes precedence)