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Limited scan array antenna systems with sharp cutoff of element pattern

  • US 4,041,501 A
  • Filed: 07/10/1975
  • Issued: 08/09/1977
  • Est. Priority Date: 07/10/1975
  • Status: Expired due to Term
First Claim
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1. An antenna system for radiating wave energy signals into a selected angular region of space and in a desired radiation pattern comprising:

  • an aperture comprising a plurality of element groups, each group comprising two or more radiating elements;

    a plurality of first coupling means, each for coupling supplied wave energy signals to the elements in a corresponding one of said element groups;

    and second coupling means for interconnecting said plurality of first coupling means to cause wave energy signals supplied to any of said first coupling means to be additionally coupled to selected elements in substantially all of the remaining element groups of said aperture with predetermined amplitudes and phases, thereby causing said aperture to radiate wave energy signals primarily in said selected region of space;

    whereby when wave energy signals are supplied to each of said first coupling means with a predetermined amplitude and phase, said aperture will radiate wave energy signals in said desired radiation pattern.

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