Abstract :
The printed circuit TWT offers the promise of an order of magnitude reduction in tube manufacturing cost, as compared to conventional TWTs with comparable performance. The low cost of the printed circuit TWT is acheived by using a radically new approach. All the tube elements, including the electron beam forming electrodes, the microwave interaction structure, the collector, and all electrical and microwave connections are printed on a pair of ceramic sheets. The sheets themselves form the vacuum envelope of the tube.