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Planar inverted-F antenna

  • US 9,531,063 B2
  • Filed: 09/11/2013
  • Issued: 12/27/2016
  • Est. Priority Date: 11/19/2012
  • Status: Active Grant
First Claim
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1. A planar inverted-F antenna implantable in a living body, comprising:

  • a first substrate made of a dielectric material;

    a grounding electrode disposed on a first surface of the first substrate;

    an emitting electrode disposed to be opposite to the grounding electrode so as to sandwich the first substrate, the emitting electrode being in the form of an S-shape, and having a short-circuiting point short-circuited to the grounding electrode at an edge portion thereof, a feed point at which power is fed and which is located away from the short-circuiting point by a distance at which the characteristic impedance of the planar inverted-F antenna for electric waves with a certain design wavelength has a certain value;

    a second substrate disposed to cover the entire emitting electrode together with the first substrate, and made of a dielectric material; and

    an insulating material layer disposed to cover the entire grounding electrode together with the first substrate and insulating a living body in which the planar inverted-F antenna is implanted from the grounding electrode, wherein the dielectric constant of the insulating material layer is lower than the dielectric constants of the first substrate and the second substrate.

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