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Enhanced guided surface waveguide probe

  • US 9,893,403 B2
  • Filed: 08/16/2016
  • Issued: 02/13/2018
  • Est. Priority Date: 09/11/2015
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • positioning a charge terminal at a defined height over a lossy conducting medium, the charge terminal comprising a upper terminal portion coupled to a lower terminal portion through a variable capacitance;

    adjusting a phase delay (Φ

    ) of a feed network connected to the charge terminal to match a wave tilt angle (Ψ

    ) corresponding to a complex Brewster angle of incidence (θ

    i,B) associated with the lossy conducting medium;

    adjusting the variable capacitance of the charge terminal based upon an image ground plane impedance (Zin) associated with the lossy conducting medium; and

    exciting the charge terminal with an excitation voltage via the feed network, where the excitation voltage establishes an electric field that couples into a guided surface waveguide mode along a surface of the lossy conducting medium.

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