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Loop antenna and feed coupler for reduced interaction with tuning adjustments

  • US 6,597,318 B1
  • Filed: 06/27/2002
  • Issued: 07/22/2003
  • Est. Priority Date: 06/27/2002
  • Status: Active Grant
First Claim
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1. A printed circuit antenna with broadband input coupling, comprising:

  • a dielectric substrate disposed on a conductive ground plane;

    an elongated conductive antenna element arranged in the form of a loop and disposed on said substrate, said antenna element having first and second adjacent end portions separated by a gap, said second end portion connected to said ground plane;

    an input coupler, said input coupler comprising a conductive line disposed on said substrate adjacent to said antenna element and separated from said antenna element by a coupling space for coupling to said antenna element an input signal applied to said input coupler, said conductive line extending parallel to a portion of said antenna element.

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