The model TH 3875 traveling-wave tube (TWT) utilizes two technologies: the helix delay line, which ensures large instantaneous bandwidth, and a Wehnelt electrode in the electron gun, which allows modulation of the output signal. (The tubes can operate in CW or pulse mode, depending on the type of scrambling required.) Designed specifically for millimetric-wave electronic countermeasure systems, the TWTs provide the power needed for effective jamming over a very broad frequency range. The TH 3875 delivers 80 W CW power from 18 to 40 GHz, requiring fewer tubes for a given performance level.
Thomson Tubes Electroniques, Meudon-La-Foret, Cedex, France +33 (1) 30 70 36 43.