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DUAL FREQUENCY ARRAY

  • US 3,818,490 A
  • Filed: 08/04/1972
  • Issued: 06/18/1974
  • Est. Priority Date: 08/04/1972
  • Status: Expired due to Term
First Claim
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1. An antenna adapted to operate in first and second frequency ranges comprising:

  • a. a plurality of radiating horns for radiating energy within said first frequency range;

    b. a plurality of dipole radiating elements transversely mounted in a plurality of sections of open waveguide, each of said dipoles being designed to radiate energy in said second frequency range;

    e. means for mounting said horns and said sections of open waveguide to form a unitary antenna aperture comprising rows of radiating elements, the type of radiating element comprising the rows alternating between horns and dipoles in a direction substantially ninety degrees with respect to said waveguides, with said first and second frequency ranges, the dimension of said horns, the dimension of said dipole elements and the dimension of said open waveguide being selected to reduce the coupling between said horns and dipoles.

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