LIQUID COOLED BAND EDGE OSCILLATION PREVENTION FOR A TWT

摘要

A longitudinally extending liquid cooled attenuator is disposed proximate to and externally of a traveling wave tube coupled cavity slow-wave structure. The attenuator may be a hollow dielectric tube filled with a lossy fluid or a hollow dielectric tube with a lossy solid which is cooled by a moving fluid or a tubular ceramic rod disposed coaxially about an electrically conductive rod. This device lends itself well to the prevention of band-edge oscillations in the coupled cavity traveling wave tube.