Communications: radio wave antennas – Antennas – Antenna with parasitic reflector
Patent
1993-01-11
1993-09-07
Hille, Rolf
Communications: radio wave antennas
Antennas
Antenna with parasitic reflector
343700MS, 343819, 343853, 343876, H01Q 3240, H01Q 3300, H01Q 1380
Patent
active
052433587
ABSTRACT:
A directional scanning antenna includes a circular array of a plurality of antenna elements extending several wavelengths in diameter. The number of antenna elements are sufficient to form a plurality of directionally-oriented subsets of active antenna elements and associated subsets of parasitic antenna elements. An antenna feed system provides connections to each one of the plurality of antenna elements that include connections to electronically variable reactances and connections to a source or receiver of electromagnetic energy. The antenna feed system is controllable to provide connections between the subsets of active antenna elements providing wave propagation and reception in one or more directions and to provide connections between a plurality of the remainder of antenna elements in associated subsets of parasitic antenna elements to assist the directionality of the antennas.
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Sanford Gary G.
Westfeldt, Jr. Patrick M.
Alberding Gilbert E.
Ball Corporation
Brown Peter Toby
Hille Rolf
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