Method and apparatus for four-beam radar

Details Method and apparatus for four-beam radar Method and apparatus for four-beam radar

1984-12-10

1986-12-30

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

H01Q 326

Patent

active

046332561

ABSTRACT:
A method and apparatus for producing remote profiling beams pointing altetely to the north, east, west or south by ordered distribution of phase shifts to elements of a square antenna array. Elements within a given group of four array elements share a related group of four phase shift means. Elements in a group trade phase shift means intragroup but there is no intergroup trading. The arrangement permits four-beam capability without unduly increasing the cost or complexity of the radar assembly over prior art assemblies. Also disclosed is a system for "tipping" the array either virtually or physically to obtain a vertical beam.

REFERENCES:
patent: 3135959 (1964-06-01), Moran
patent: 3202991 (1965-08-01), Howells
patent: 4010474 (1977-03-01), Provencher

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