Millimeter wave, high power, broadband travelling wave tube

摘要

A travelling wave tube which amplifies a signal and includes an electron gun, a D.C. voltage generator, an electron accelerator and delay structure loaded with dielectric material. The electron gun is at approximately ground potential and emits an electron beam. The D.C. voltage generator generates a very high D.C. voltage. The electron accelerator receives the high D.C. voltage from the D.C. voltage generator and accelerates the electrons in the electron beam. The delay structure is at approximately the same high D.C. voltage as the electron accelerator and includes an input port and an output port, the signal being received in the input port, travelling through the delay structure, and being output at the output port. The rf input and output windows are insulated from the high DC potential of the delay structure by dielectric wave guides. The accelerated electrons in the electron beam interact with the signal travelling through the waveguide to transfer energy from the electron beam to the signal and cause the signal received by the input port of the waveguide to be amplified at the output port of the waveguide.