METHOD FOR SUPPORTING A SLOW WAVE CIRCUIT VIA AN ARRAY OF DIELECTRIC POSTS

摘要

A slow wave circuit is supported within a surrounding metallic barrel portion of a traveling wave tube via the intermediary of an array of dielectric posts each of which is brazed at one end to the slow wave circuit and at the other end to the barrel. During fabrication of the tube, the post structures are first bonded to a metallic strip which in turn is bonded to the inside of the barrel. The strip preferably has a coefficient of thermal expansion equal to that of the dielectric posts.