Title :
A high efficiency X-band TWT equipped with a tilted electric field (TEF) collector
Author :
Okoshi, T. ; Murata, S. ; Orui, R. ; Yuasa, Y.
Author_Institution :
Dept. of Electron. Eng., Univ. of Tokyo, Tokyo, Japan
Abstract :
An X-band, PPM-focused TWT equipped with a 4-stage tilted electric field (TEF) collector has been developed. The collector magnetic field is produced by a single samarium-cobalt magnet. The collector-dissipation reduction factor, which is used to evaluate the performance of a depressed collector, is estimated as 0.14. As the result, an efficiency improvement from 11.8% (base-tube efficiency) to 43% has been achieved at the saturated output power of 22 W at 12 GHz.
Keywords :
electric fields; travelling wave tubes; 4-stage tilted electric field collector; X-band PPM-focused TWT; collector magnetic field; collector-dissipation reduction factor; depressed collector; frequency 12 GHz; high efficiency X-band TWT; power 22 W; samarium-cobalt magnet; Acceleration; Electrodes; Electron tubes; Heating; Magnetic flux; Radio frequency; Saturation magnetization;
Conference_Titel :
Electron Devices Meeting (IEDM), 1974 International
Conference_Location :
Washington, DC
DOI :
10.1109/IEDM.1974.6219803
