Communications: radio wave antennas – Antennas – Wave guide type
Patent
1986-11-26
1989-02-07
Sikes, William L.
Communications: radio wave antennas
Antennas
Wave guide type
343786, 343725, H01Q 300, H01Q 1302
Patent
active
048034959
ABSTRACT:
An array antenna is provided wherein each adjacent pair of a plurality of antenna elements in such array antenna have a common, conductive wall having a castellated radiating edge. Radio frequency energy resistive material is disposed within slots formed in the radiating edge. With such arrangement, electrical coupling between the adjacent pair of antenna elements is reduced thereby improving the gain of the antenna at the lower frequency operating band of the antenna. Further, the electric field distribution is redistributed by the slotted radiating edge from a cosine distribution associated with a linear edge to a more flattened, uniform distribution to increase the effective aperture of the element in the H-plane.
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Monser George J.
Roy Albert A.
Johnson Doris J.
Raytheon Company
Sharkansky Richard M.
Sikes William L.
Walsh Edmund J.
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