US 11,959,382 B2
Multi-piece corrugated waveguide
Hy Phan, Houston, TX (US); Matthew Houde, Somerville, MA (US); Curtis Ardoin, Pearland, TX (US); Carlos Araque, Dorado, PR (US); Justin Lamb, Arcola, TX (US); Dennis Arnow, Los Gatos, CA (US); and Ray Oliver, Westmeath (IE)
Assigned to Quaise Energy, Inc., Cambridge, MA (US)
Filed by Quaise Energy, Inc., Cambridge, MA (US)
Filed on Jan. 25, 2023, as Appl. No. 18/159,340.
Application 18/159,340 is a continuation of application No. 17/367,800, filed on Jul. 6, 2021, granted, now 11,613,931, issued on Mar. 28, 2023.
Prior Publication US 2023/0160262 A1, May 25, 2023
Int. Cl. E21B 7/15 (2006.01); H01P 3/123 (2006.01)
CPC E21B 7/15 (2013.01) [H01P 3/123 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An apparatus comprising:
an outer tube formed as a single body having an inner surface, an inner diameter, and a length greater than 1 meter; and
an inner tube having an inner surface, an outer surface including a dielectric material on the outer surface, an outer diameter, and a helical-shaped groove formed on the inner surface and extending along a length of the inner tube, wherein the helical-shaped groove is configured to propagate a millimeter electromagnetic wave in an HE11 mode and the inner tube is positioned within the outer tube and the outer diameter of the inner tube is less than the inner diameter of the outer tube.