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Switch-tuned meandered-slot antenna

  • US 5,754,143 A
  • Filed: 10/29/1996
  • Issued: 05/19/1998
  • Est. Priority Date: 10/29/1996
  • Status: Expired due to Term
First Claim
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1. An electrically-short monopole antenna having a monopole length, said antenna comprisingan electrically conductive sheet comprising an elongated meandered slot having first and second longitudinal slot edges, said meandered slot comprising a plurality of substantially parallel meander sections of substantially uniform length joined end-to-end in series at folds;

  • shunt RF switching means comprising at least one switchable conducting element connected via a path of relatively low RF impedance substantially transversely across said meandered slot from said first edge to said second edge; and

    an antenna terminal pair comprising first and second terminals located on said conductive sheet proximate said first and second slot edges respectively, said first and second terminals being substantially opposite one another.

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