Excitation and use of guided surface wave modes on lossy media
First Claim
Patent Images
1. A guided surface waveguide probe, comprising:
- a charge terminal elevated over a lossy conducting medium; and
a coupling circuit configured to couple an excitation source to the charge terminal, the coupling circuit configured to provide a voltage to the charge terminal that establishes an electric field having a wave tilt (W) that intersects the lossy conducting medium at a tangent of a complex Brewster angle (ψ
i,B) at a Hankel crossover distance (Rx) from the guided surface waveguide probe.
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Abstract
Disclosed are various embodiments for transmitting energy conveyed in the form of a guided surface-waveguide mode along the surface of a lossy medium such as, e.g., a terrestrial medium by exciting a guided surface waveguide probe.
106 Citations
32 Claims
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1. A guided surface waveguide probe, comprising:
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a charge terminal elevated over a lossy conducting medium; and a coupling circuit configured to couple an excitation source to the charge terminal, the coupling circuit configured to provide a voltage to the charge terminal that establishes an electric field having a wave tilt (W) that intersects the lossy conducting medium at a tangent of a complex Brewster angle (ψ
i,B) at a Hankel crossover distance (Rx) from the guided surface waveguide probe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system, comprising:
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a guided surface waveguide probe, including; a charge terminal elevated over a lossy conducting medium; and a coupling circuit configured to provide a voltage to the charge terminal that establishes an electric field having a wave tilt (W) that intersects the lossy conducting medium at a tangent of a complex Brewster angle (ψ
0) at a Hankel crossover distance (Rx) from the guided surface waveguide probe; andan excitation source coupled to the charge terminal via the coupling circuit. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method, comprising:
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positioning a charge terminal at a defined height over a lossy conducting medium; positioning a compensation terminal below the charge terminal and over the lossy conducting medium, the compensation terminal separated from the charge terminal by a defined distance; and exciting the charge terminal and the compensation terminal with excitation voltages having a complex phase difference, where the excitation voltages establish an electric field having a wave tilt (W) that corresponds to a wave illuminating the lossy conducting medium at a complex Brewster angle (ψ
i,B) at a Hankel crossover distance (Rx) from the charge terminal and the compensation terminal. - View Dependent Claims (29, 30, 31, 32)
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Specification