A kind of tunable multiple frequency antenna

A kind of tunable multiple frequency antenna

  • CN 104,347,931 B
  • Filed: 08/05/2013
  • Issued: 11/09/2018
  • Est. Priority Date: 08/05/2013
  • Status: Active Grant
First Claim
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1. a kind of tunable multiple frequency antenna is applied to mobile device, which is characterized in that the ground connection of the prevention at radio-frequency port of the mobile devicePart is connected with the ground wire of the mobile device, which includes:

  • First unipole antenna, adjustable device and parasitic ground line, whereinThe adjustable device is connected with the prevention at radio-frequency port;

    One end of first unipole antenna is connected with the adjustable device, other end open circuit setting;

    One end of the parasitic ground line is connected with the ground wire of the mobile device, other end open circuit setting;

    Wherein, the tunable multiple frequency antenna further includes:

    Second unipole antenna, second unipole antenna one end and the radio-frequency headMouth is connected, and the other end is connected with the adjustable device so that second unipole antenna is connected in series in the radio-frequency headBetween mouth and the adjustable device;

    Wherein, the length of second unipole antenna be less than or equal to first unipole antenna and the second unipole antenna length itThe 1/5 of sum.

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