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Highly isolated monopole antenna system

  • US 10,148,014 B2
  • Filed: 09/23/2016
  • Issued: 12/04/2018
  • Est. Priority Date: 09/23/2016
  • Status: Active Grant
First Claim
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1. An antenna system of a mobile-communications device comprising:

  • a monopole antenna coupled to a wireless signal subsystem;

    a slot antenna coupled to the wireless signal subsystem,wherein the monopole antenna and the slot antenna are linearly polarized and co-planar;

    an active feed structure including a first active feedline and a second active feedline, the first active feedline and the second active feedline each being coupled, respectively, to a common ground plane shared by the monopole antenna and the slot antenna, the first active feedline and the second active feedline coupling the monopole antenna and the slot antenna, respectively, to the wireless signal subsystem; and

    a dummy feed structure including a first dummy feedline and a second dummy feedline that is each coupled, respectively, to the common ground plane, the first dummy feedline being symmetric to the first active feedline about an axis of symmetry, and the second dummy feedline being symmetric to the second active feedline about the axis of symmetry.

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