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Deterministic thinned aperture phased antenna array

  • US 4,797,682 A
  • Filed: 06/08/1987
  • Issued: 01/10/1989
  • Est. Priority Date: 06/08/1987
  • Status: Expired due to Term
First Claim
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1. An improved antenna array of the type having a thinned aperture defined by a plurality of radio frequency radiating elements operable over a preselected bandwidth and having a desired gain, said antenna array producing a main lobe signal and side lobe signals within said bandwidth, wherein the improvement comprises:

  • the radiating elements being arranged in at least first, second and third groups thereof concentrically disposed about a reference point, said first, second and third groups being respectively spaced at successively greater distances from said reference point with said second group positioned between said first and third groups, the radiating sizes of the elements in said first and third groups being smaller than those of the elements in said second group, whereby to increase the amplitude and directivity of said main lobe signal and minimize the amplitude of said side lobe signals relative to said main lobe signal.

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