Multipaction Susceptibility Margins in Space Travelling wave Tubes

Defence science journal

article

Talur Chanakya¹  N. K. Manker¹  V. B. Naidu¹  S. K. Datta¹ 

[1] DRDO-Microwave Tube Research & Development Centre

关键词: Multipaction breakdown;    Space TWT;    Coaxial coupler;    Waveguide coupler;   

DOI  :  10.14429/dsj.71.16769

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

Study of multipaction breakdown margins in the output connector of a travelling-wave tube (TWT) is essential for application in satellite-borne systems. A TWT uses a coaxial ceramic window, a coaxial output coupler and / or a waveguide output coupler that are prone to multipaction breakdown boosted by high RF power due to the ion accumulation in critical regions during the transition of the satellite through plasma pockets in space. A detailed procedure for estimating the multipaction susceptibility margins in a TWT using CST studio and analytical equations is presented in this paper, and output couplers of two typical TWTs are analysed and the results are presented.

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