Communications: radio wave antennas – Antennas – With coupling network or impedance in the leadin
Patent
1982-12-14
1988-12-20
Sikes, William L.
Communications: radio wave antennas
Antennas
With coupling network or impedance in the leadin
343754, 343895, H01Q 2100
Patent
active
047928085
ABSTRACT:
The surface area utilization efficiency of an array of antenna elements distributed over a prescribed geometrical surface is increased by configuring that surface as an ellipse of revolution. Preferably, the ellipsoid surface over which the antenna elements are distributed has a shape such that the major axis of the ellipse in rotation is twice the length of the minor axis. This results in an optimal, near constant illuminated surface area for any angle in the hemisphere. Because a more efficient use of the antenna surface area is provided, the number of antenna elements that is required to obtain the same array gain in all directions in the hemisphere can be reduced substantially when compared with spherical or tetrahedral configurations of conventional hemispherical coverage arrays.
REFERENCES:
patent: 2761138 (1956-08-01), Sherman
patent: 3152330 (1964-10-01), Chatelain
patent: 3192529 (1965-06-01), Chatelain
patent: 3230536 (1966-01-01), Cheston
patent: 3594802 (1971-07-01), Koob
patent: 3803618 (1974-04-01), Coleman
patent: 4162499 (1979-07-01), Jones et al.
Harris Corp.
Sikes William L.
Wise Robert E.
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