Transmission line windows

摘要

A window assembly for use with electromagnetic waveguides includes a window 3 and a housing 4. The window 3 has impermeable layers 33 and 34 which are bridged by a reticulum 35 of ceramic material with internal spaces which form a continuous flow path for coolant. The window is received in an opening in the housing 4 which is surrounded by an inwardly-directed flange having a peripheral recess opposed to the window 3 to improve the microwave performance of the window.