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Small low profile antennas using high impedance surfaces and high permeability, high permittivity materials

  • US 6,967,621 B1
  • Filed: 03/16/2004
  • Issued: 11/22/2005
  • Est. Priority Date: 03/16/2004
  • Status: Expired due to Fees
First Claim
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1. A low profile antenna, comprising:

  • A fractal pattern antenna being generally planar in configuration and extending in a first direction; and

    a ground plane structure operatively associated with the antenna, the ground plane structure comprising;

    a generally planar surface that extends in a direction that is generally parallel to the first direction;

    at least one protrusion extending from the planar surface; and

    a dielectric substrate supported by the planar surface, the dielectric substrate comprising a ferrimagnetic material that has a relative permeability (μ

    ) of greater than or equal to about one and a relative permittivity (ε

    ) of greater than or equal to about one.

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