CPC Subgroup
H01Q 19/12 wherein the surfaces are concave (H01Q19/18 takes precedence)
Full Title
Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic > using reflecting surfaces > wherein the surfaces are concave (H01Q19/18 takes precedence)
3 direct subcodes
Child Classifications
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- H01Q 19/13 the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination (H01Q19/15 takes precedence)
- H01Q 19/15 the primary radiating source being a line source, e.g. leaky waveguide antennas
- H01Q 19/17 the primary radiating source comprising two or more radiating elements (H01Q19/15, H01Q25/00 take precedence)