Your browser doesn't support javascript.
loading
Design and verification of a backward wave oscillation suppression circuit for the Ka-band gyrotron travelling-wave tube.
Ma, Yuan; Liu, Guo; Lei, Changbiao; Cao, Yingjian; Wang, Weijie; Wang, Yu; Yao, Yelei; Jiang, Wei; Wang, Jianxun; Luo, Yong.
Afiliación
  • Ma Y; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
  • Liu G; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
  • Lei C; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
  • Cao Y; System Engineering Research Institute, Beijing 100191, China.
  • Wang W; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
  • Wang Y; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
  • Yao Y; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
  • Jiang W; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
  • Wang J; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
  • Luo Y; School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
Rev Sci Instrum ; 94(10)2023 Oct 01.
Article en En | MEDLINE | ID: mdl-37823769
ABSTRACT
Backward wave oscillation seriously degrades the stability of gyrotron travelling-wave tubes (gyro-TWTs), especially during high average/continuous wave operation. To solve this problem, a selective mode suppression structure (SMSS) based on the mode coupling principle is proposed and applied in the nonlinear beam-wave interaction region to suppress the parasitic TE11 mode. It is capable of obtaining a high power and improving the tube stability. Simulation results demonstrate that the SMSS can raise the starting current from 10 to 18 A and the starting pitch factor from 1.2 to 1.6. Based on this proposed circuit, a Ka-band TE01 mode gyro-TWT was designed, and the particle-in-cell simulation shows that it can achieve a saturated output power of over 150 kW from 29.7 to 31.7 GHz with a velocity spread of 2.2%. For verification, a SMSS is manufactured and cold tested. The measurement of S-parameters reveals that it can effectively suppress the parasitic TE11 mode.
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Rev Sci Instrum Año: 2023 Tipo del documento: Article País de afiliación: China
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Rev Sci Instrum Año: 2023 Tipo del documento: Article País de afiliación: China