having two or more spaced reflecting surfaces (H01Q19/20 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 > having two or more spaced reflecting surfaces (H01Q19/20 takes precedence)

Child Classifications

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• H01Q 19/185 wherein the surfaces are plane
• H01Q 19/19 comprising one main concave reflecting surface associated with an auxiliary reflecting surface