Low frequency electronically steerable cylindrical slot array ra

Details Low frequency electronically steerable cylindrical slot array ra Low frequency electronically steerable cylindrical slot array ra

1981-10-28

1983-02-08

Moore, David K.

Communications: radio wave antennas

Antennas

Slot type

343767, H01Q 1310

Patent

active

043731627

ABSTRACT:
This invention is an electronically steerable radar antenna which is on a cylinder section which is on the order of one wave length in circumference and in which the shape of the antenna elements on the cylinder section take the form of "O", "I" and "C" slots occupying about one-third the section circumference. Radar beams are steered by changing the phase and amplitude of the drive to the different elements of the antenna. The slots are formed as interruptions in an otherwise continuous, conductive ground plane and may be filled with dielectric if desired so that there is no surface discontinuity.

REFERENCES:
patent: 2523461 (1951-10-01), Lindenblad
patent: 2573461 (1951-10-01), Lindenblad
patent: 2635188 (1953-04-01), Riblet
patent: 2977595 (1961-03-01), Zisler et al.
patent: 3039098 (1962-06-01), Bickmore
patent: 3074063 (1963-01-01), Horton
patent: 3293645 (1966-12-01), Farley et al.
patent: 3518685 (1970-06-01), Jones, Jr.
patent: 3623162 (1971-11-01), Whittey
patent: 3662392 (1972-05-01), Stapleton et al.
patent: 4063246 (1977-12-01), Greiser

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