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SUPER-DIRECTIVE SYSTEM

  • US 3,860,928 A
  • Filed: 11/01/1973
  • Issued: 01/14/1975
  • Est. Priority Date: 07/03/1972
  • Status: Expired due to Term
First Claim
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1. In combination:

  • an array of radiating elements, said array having dimensions less than a wavelength of energy radiated therefrom;

    a plurality of signal carrying channels;

    means for coupling individual ones of said channels with respective ones of said radiating elements, each of said channels being coupled to all of said radiating elements to provide combinations of signals of said radiating elements, one of said channels having means for varying the gain of its signal combination relative to that of another of said channels, at least one of said combinations having at least a portion thereof which is the signal of a quadrupole radiation pattern, at least one of said combinations having at least a portion thereof which is the signal of a dipole radiation pattern and at least one of said combinations having at least a portion thereof which is the signal of a monopole radiation pattern;

    means for rotating said dipole pattern relative to said quadrupole pattern; and

    means for arithmetically combining each of said radiation patterns to form a multiple mode type of radiation pattern, said varying of gain and said rotating serving to shape said multiple mode pattern.

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