MULTISTAGE DEPRESSED COLLECTOR TYPE TRAVELLING WAVE TUBE

摘要

PROBLEM TO BE SOLVED: To control the return electrons causing deterioration in high frequency characteristics of multistage depressed collector type travelling wave tube. ;SOLUTION: A voltage 13 applied to No.2 collector terminal 6 is set higher than a voltage 12 applied to No.1 collector terminal 5 in relative to a cathode voltage 10. Because of this, the beam of electrons launched from a cathode 2 and impinged to No.1 collector terminal 5 is induced to No.2 collector terminal 6, it does not thereby become return electrons to a slow-wave circuit 4. Also the secondary electrons generated by the collector do not become return electrons due to the effect of electric field generated by No.1 collector terminal 5.;COPYRIGHT: (C)1998,JPO