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Multi-mode wideband antenna

  • US 8,754,817 B1
  • Filed: 12/07/2011
  • Issued: 06/17/2014
  • Est. Priority Date: 12/07/2011
  • Status: Expired due to Fees
First Claim
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1. A apparatus comprising:

  • a single radio frequency (RF) input;

    a dual-mode monopole antenna coupled to the single RF input, wherein the dual-mode monopole antenna is configured to provide a first resonant mode and a second resonant mode and to operate as a feeding structure to an antenna circuit that is not conductively connected to the dual-mode monopole antenna; and

    the antenna circuit configured to provide a plurality of resonant modes, wherein the antenna circuit comprises;

    a line structure coupled to ground;

    a strip coupled to the line structure; and

    a second folded arm extending back towards the line structure from a distal end of the strip, wherein the strip is disposed in parallel with a first arm of the dual-mode monopole antenna and farther away from the single RF input than the first arm, and wherein the strip is disposed to form a gap between a portion of the first arm and a portion of the strip.

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