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Microstrip antenna

  • US 4,697,189 A
  • Filed: 04/24/1986
  • Issued: 09/29/1987
  • Est. Priority Date: 04/26/1985
  • Status: Expired due to Fees
First Claim
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1. A microwave antenna including:

  • a ground plate;

    a substanially planar support means spaced from the ground plate to provide an air gap therebetween;

    a metal patch on the support means, said metal patch being provided on a face of the support means which is directed towards the ground plate;

    an electrical conductor means connected to the metal patch and ground plate; and

    the support means and the ground plate being provided with complementary peripheral flanges which are adjustably slidably engaged together to hold the support means over the ground plate at a selected spacing therefrom, with the variation of the spacing effecting adjustment of the thickness of the air gap.

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