Patent ID: 11923607
Assignee: SOUTHWEST RESEARCH INSTITUTE
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method of delivering microwave energy into a combustion chamber from an air-filled waveguide, the air-filled waveguide having a waveguide attachment flange, comprising:
providing at least one transition device, comprising: a transition attachment flange compatible to the waveguide attachment flange; a rod having an upper portion extending upwardly through the transition attachment flange and waveguide attachment flange, and a lower portion extending downwardly into the air-filled waveguide; the rod being made from a solid piece of high-dielectric material; wherein outer surfaces of the upper portion (other than its end face) are metal plated, such that the rod provides a solid waveguide having a radiating aperture; wherein the lower portion has no such plating;
installing each transition device such that the radiating aperture extends into the combustion chamber or is flush with an inner wall of the combustion chamber thereby providing a radiating antenna.