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Hybrid antenna for portable radio communication devices

  • US 9,363,794 B1
  • Filed: 12/15/2014
  • Issued: 06/07/2016
  • Est. Priority Date: 12/15/2014
  • Status: Active Grant
First Claim
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1. An internal antenna structure for a portable radio communication device, comprising:

  • a feed line connected to a radio frequency (RF) circuit;

    a switching circuit having an input connected to the feed line and having a plurality of selectable outputs, the switching circuit is operable to connect the input to a selected one of the plurality of selectable outputs;

    an inductive matching tail element connected between the feed line and a reference potential; and

    a wrapped conductor element having a plurality of tap points along a length of the wrapped conductor element;

    wherein each of the plurality of selectable outputs of the switching circuit is coupled exclusively to a respective one of the plurality of tap points.

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