Application of integrative cathode-heater component element to TWT

In fact, fast start of microwave tube is that its cathode can quickly get in operation state, i.e. has shorter preheating time. It´s a way to turn cathode gaining heat energy through radiation and conduction. This thesis introduced how to integrate heater with cathode together with the aid of a transition material, so preheating time reduce for the cathode of diameter less than 7mm. The thesis also introduced the basic construction of the component element, the measuring method and result of the component performance and situation of application to TWT.