Phase steered subarray antenna

Details Phase steered subarray antenna Phase steered subarray antenna

1975-05-22

1977-08-30

Lieberman, Eli

Communications: radio wave antennas

Antennas

With coupling network or impedance in the leadin

343100LE, H01Q 326

Patent

active

040458008

ABSTRACT:
A phased array antenna which is adapted to provide electronic scanning over a limited scan range with a minimum number of control devices and yet maintain fairly low sidelobes is disclosed wherein the respective radiating elements are grouped into steerable subarrays. Phase steering of the subarrays is performed in discrete steps by means of phase shifters with one or two bits interspersed within the feed network. The phase state of these subarray phase shifters is selected to improve the antenna gain and suppress the grating lobes. Overlapping of the radiating elements of the subarrays is also employed to further suppress grating lobes throughout the limited scan range.

REFERENCES:
patent: 3176297 (1965-03-01), Forsberg
patent: 3200401 (1965-08-01), Conger et al.
patent: 3295134 (1966-12-01), Lowe
patent: 3480958 (1969-11-01), Tcheditch
patent: 3553706 (1971-01-01), Charlton
patent: 3560985 (1971-02-01), Lyon
patent: 3803625 (1974-04-01), Nemit
patent: 3852761 (1974-12-01), Bogner
patent: 3914765 (1975-10-01), Litt et al.

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