Communications: radio wave antennas – Antennas – With aircraft
Patent
1985-02-13
1987-12-29
Blum, Theodore M.
Communications: radio wave antennas
Antennas
With aircraft
343781P, 342 2, H01Q 128
Patent
active
047164174
ABSTRACT:
A holographic aircraft antenna and method of fabricating the antenna are disclosed herein. The antenna includes a thin layer of dielectric strips of material contoured to and mounted on the conductive skin of the aircraft or a plurality of thin metal conducting strips secured to the skin of a composite aircraft. The spacing, width and size of the thin strips forms a hologram which is determined by the interference pattern of radio frequency beams selected for and directed at a holographic recording medium at particular angles to provide a desired or series of desired radiation patterns. In addition, a radar reduction device is provided wherein the hologram includes thin strips of dielectric material on the conductive skin of the aircraft or thin metal conducting strips on the composite aircraft. The radar reduction hologram is mounted so that interrogating radar beams become entrapped surface waves directed longitudinally and along the axis of the wings thereby providing minimum reflection of the radar beam to reduce the size of the aircaraft detected by the radar apparatus.
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Blum Theodore M.
Gregory Bernarr Earl
Grumman Aerospace Corporation
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