Shaped beams from uniformly illuminated and phased array antenna

Details Shaped beams from uniformly illuminated and phased array antenna Shaped beams from uniformly illuminated and phased array antenna

1990-12-13

1993-08-31

Hille, Rolf

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343853, 343700R, 343768, 343771, H01Q 1906, H01Q 2100, H01Q 1310

Patent

active

052413233

ABSTRACT:
A constant gain sector beam array is obtained by applying equal amplitude, equal phase excitations to a sector array characterized by a curved array geometry. In a simple form, the curve is the arc of a portion of a circle. The radiation pattern can be further enhanced by using a more complex curvature geometry, and by minor adjustments to the amplitudes in the slots. Other forms of shaped beams, such as a cosecant squared antenna pattern, may be obtained by appropriately shaping the curvature geometry.

REFERENCES:
patent: 3774222 (1973-11-01), Charlton
patent: 4792808 (1988-12-01), Hildebrand
patent: 4814779 (1989-03-01), Levine
patent: 4899162 (1990-02-01), Bayetto et al.

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