Vacuum-tight window for a microwave tube, and microwave tube with a window

摘要

The invention relates to microwave tubes and more particularly travelling-wave tubes, in which the zone under vacuum is isolated from the external HF input/output circuits by vacuum-tight windows. …??The window according to the invention consists of a ceramic cylinder (21) the two ends of which carry pliable metal rings (22, 23). This window is brazed onto the cylindrical enclosure (4) of the part under vacuum, by virtue of a clearance (16) machined into the enclosure (4), so that the enclosure (4) and the window (21) are integrated and coaxial. The HF transmission through the window (21) occurs by means of an antenna formed by a metal sheet (18) mounted squarely on a metal cylinder (20) fixed on the enclosure (4). …??Application to microwave tubes of high power, and in particular to travelling-wave tubes. …IMAGE…