Broadband-high power microwave window assembly

Details Broadband-high power microwave window assembly Broadband-high power microwave window assembly

H - Electricity

01

P

333/105

H01P 1/08 (2006.01) H01J 23/027 (2006.01) H01J 23/36 (2006.01)

Patent

CA 1178669

- 22 - Abstract Broadband High-Power Microwave Window Assembly A window assembly for a hollow waveguide of circular cross-section, with improved bandwidth and cooling capability for handling high microwave power transmissions over wide frequency ranges t is disclosed. A plate or disc of dielectric of refractive index n1 extends sealingly across the waveguide and has two parallel faces which exhibit a pattern of corrugations. One of these faces is in contact with a dielectric fluid of refractive index n2, and apparatus is provided for cooling and circulating the fluid over said one face. Each of the corrugations extends into the fluid a distance proportional to the inverse of the geometric mean of the product of the refractive indices n1, n2. In a preferred embodiment, a second plate is included, separated from the first by a region in which said dielectric fluid is circu- lated, and in which at least both the faces in con- tact with the fluid are corrugated. The corruga- tions not only result in greatly improved matching over a broad band, but also greatly improved fluid flow and surface contact thereof over said one face, for enhanced cooling and thus power handling capa- bility of the window assembly.

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