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Printed circuit radio frequency antenna

  • US 5,206,657 A
  • Filed: 10/07/1991
  • Issued: 04/27/1993
  • Est. Priority Date: 10/07/1991
  • Status: Expired due to Term
First Claim
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1. A radio frequency antenna for operation at a nominal frequency comprising:

  • a first circuit board etched on each side thereof to form a first pair of coaxial congruent conductive loops, each loop having a perimeter much smaller than a wavelength corresponding to the nominal frequency;

    a second circuit board etched on each side thereof to form a second pair of coaxial congruent conductive loops congruent with the first pair of conductive loops;

    spacer means for maintaining the first and second circuit boards in a fixed spaced apart relationship with the first and second pairs of conductive loops in a coaxial relationship;

    circuit connection means for electrically coupling the first and second pairs of conductive loops in a series relationship.

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