Development of an S-band 22-kW-Average-Power-Klystron With 7.14% Relative Bandwidth

Author

Zhang, Zhaochuan ; Shen, Baoli ; Yu, Xiaojuan ; Zhu, Fang ; Han, Yong ; Huang, Yunping ; Zhang, Feng

Author_Institution

Inst. of Electron., Chinese Acad. of Sci., Beijing, China

Volume

58

Issue

8

fYear

2011

Firstpage

2789

Lastpage

2795

Abstract

This paper presents the design considerations, simulation results, and test results for an S-band 22-kW-average-power 7.14%-relative-bandwidth klystron design with 4-min startup, which was developed in the Institute of Electronics, Chinese Academy of Sciences (IECAS) before December 2009. Ten klystrons were built and tested. Over 1.1-MW peak output power with 7.14% relative bandwidth was measured at a 2% radio-frequency (RF) duty cycle. The measured startup time is 4 min. A method of supplying the heater with electricity is proposed, the manner of improving the RF output performance is also described, and both of them have been validated through the further experiments with a specialized electron gun and the hot-test results of the klystron, respectively.

Keywords

UHF tubes; electron guns; klystrons; microwave tubes; RF duty cycle; S-band average power klystron; electron gun; frequency 2 GHz to 4 GHz; heater; power 22 kW; radiofrequency duty cycle; relative bandwidth klystron design; startup; Bandwidth; Cathodes; Cavity resonators; Electron beams; Heating; Klystrons; Radio frequency; 22-kW average power; 4-min startup; 7.14% relative bandwidth; Klystron; power dip/gain dip; test specifications;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2011.2153857

Filename

5929547