Guided surface waveguide probes
Disclosed a guided surface waveguide probe including a charge terminal configured to generate an electromagnetic field and a support apparatus that supports the charge terminal above a lossy conducting medium, wherein the electromagnetic field generated by the charge terminal synthesizes a wave front incident at a complex Brewster angle of incidence (θ i,B ) of the lossy conducting medium.
1. A guided surface waveguide probe comprising:
a charge terminal configured to generate an electromagnetic field to launch a Zenneck surface wave; and
a support apparatus that supports the charge terminal above a lossy conducting medium;
wherein the electromagnetic field generated by the charge terminal synthesizes a wave front incident at a complex Brewster angle of incidence (θ i,B ) of the lossy conducting medium at a distance from the guided surface waveguide probe greater than or equal to a Hankel crossover distance at a frequency of operation to cause a Zenneck surface wave to be launched in the lossy conducting medium.
2. The probe of claim 1 , wherein the support apparatus comprises a non-conductive vertical support.
3. The probe of claim 2 , wherein the non-conductive vertical support is a non-conductive vertical pole.
4. The probe of claim 3 , wherein the vertical pole is made of a polymeric material.
5. The probe of claim 2 , wherein the support apparatus further comprises non-conductive tensioned lines that reinforce the vertical pole.
6. The probe of claim 5 , wherein the tensioned lines are made of a polymeric material.
7. The probe of claim 1 , wherein the support apparatus comprises multiple non-conductive vertical supports.
8. The probe of claim 7 , wherein the vertical supports comprise non-conductive vertical poles.
9. The probe of claim 8 , wherein the vertical poles are made of a polymeric material.
10. The probe of claim 8 , wherein the support apparatus further comprises non-conductive cross-members that extend between the poles.
11. The probe of claim 10 , wherein the cross-members are made of a polymeric material.
12. The probe of claim 8 , wherein the support apparatus further comprises non-conductive tensioned lines that extend between the vertical poles and the charge terminal.
13. The probe of claim 12 , wherein the tensioned lines are made of a polymeric material.
14. The probe of claim 1 , wherein the support apparatus comprises multiple non-conductive diagonal supports.
15. The probe of claim 14 , wherein the diagonal supports comprise non-conductive diagonal poles.
16. The probe of claim 15 , wherein the diagonal poles are made of a polymeric material.
17. The probe of claim 15 , wherein the support apparatus further comprises non-conductive cross-members that extend between the poles.
18. The probe of claim 17 , wherein the cross-members are made of a polymeric material.
19. The probe of claim 1 , further comprising a feed network electrically coupled to the charge terminal, the feed network providing a phase delay (Φ) that matches a wave tilt angle (Ψ) associated with the complex Brewster angle of incidence (θ i,B ) in the vicinity of the guided surface waveguide probe.
20. The probe of claim 19 , wherein the feed network comprises a conductive coil and wherein the support apparatus comprises a vertical support, the vertical support comprising the coil and a non-conductive vertical pole that extends between the coil and the charge terminal.
21. The probe of claim 20 , wherein the vertical pole is made of a polymeric material.
22. The probe of claim 20 , further comprising non-conductive tensioned lines that reinforce the vertical support.
23. The probe of claim 22 , wherein the tensioned lines are made of a polymeric material.
24. The probe of claim 20 , wherein the conductive coil is encased in reinforcement material.
25. The probe of claim 24 , wherein the reinforcement material comprises concrete.
26. The probe of claim 20 , further comprising a feed line connector that electrically couples the conductive coil with the charge terminal.
27. The probe of claim 26 , further comprising a stake that electrically couples the conductive coil to the lossy conducting medium.
28. A method for generating guided surface waves comprising:
with a charge terminal supported above a lossy conducting medium by a support apparatus of a guided surface waveguide probe, generating an electromagnetic field that synthesizes a wave front incident at a complex Brewster angle of incidence (θ i,B ) of the lossy conducting medium at a distance from the guided surface waveguide probe greater than or equal to a Hankel crossover distance at a frequency of operation to cause a Zenneck surface wave to be launched in the lossy conducting medium.