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Antenna system with tuning from coupled antenna

  • US 9,293,828 B2
  • Filed: 03/27/2013
  • Issued: 03/22/2016
  • Est. Priority Date: 03/27/2013
  • Status: Active Grant
First Claim
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1. Electronic device antenna structures, comprising:

  • an antenna ground;

    a first antenna resonating element that forms a first antenna with the antenna ground and that is configured to resonate in a first frequency band;

    a second antenna resonating element that forms a second antenna with the antenna ground and that is configured to resonate in a second frequency band that is different from the first frequency band, wherein the second antenna is near-field coupled to the first antenna and the second antenna serves as a tunable parasitic antenna resonating element for the first antenna; and

    an adjustable component coupled to the second antenna resonating element, the adjustable component being configured to tune the first antenna resonating element within the first frequency band.

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