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Microwave communication antenna

  • US 5,165,109 A
  • Filed: 08/22/1991
  • Issued: 11/17/1992
  • Est. Priority Date: 01/19/1989
  • Status: Expired due to Fees
First Claim
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1. An antenna comprising:

  • a plurality of substantially parallel dielectric laminates affixed together to form a composite structure;

    an r.f. conductor formed on the exterior of said composite structure substantially parallel to said laminates;

    means for capacitively coupling r.f. energy to said r.f. conductor and for exciting propagation from said r.f. conductor of radiation having predetermined polarization characteristics, said coupling means comprising a first transmission line portion substantially parallel to said laminates and first feed coupling means conductively connected to said first transmission line portion and passing through at least a first of said dielectric laminates; and

    a pair of electrically coupled ground plane conductors formed as conductive laminates of said composite structure above and below said first transmission line portion to shield against loss of radiated energy therefrom, the electrical coupling between said ground plane conductors comprising electrically conductive means penetrating said first of said dielectric laminates and being conductively connected at one end to one of said ground plane conductors and at the other end to a first conductive trace formed on a surface of said first of said dielectric laminates substantially adjacent a juncture between said first transmission line portion and said first feed coupling means in the composite structure.

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