TM310模的同轴谐振腔与波导孔耦合及场分布研究-电子与信息学报.PDF

第 30 卷第 6 期 电 子 与 信 息 学 报 Vol.30No.6 2008 年 6 月 Journal of Electronics Information Technology Jun. 2008 TM310 模的同轴谐振腔与波导孔耦合及场分布研究 曹 静①② 丁耀根① 沈 斌① ①(中国科学院电子学研究所 北京 100080) ②(中国科学院研究生院 北京 100039) 摘 要：该文研究了采用 TM310 高阶模同轴谐振腔与波导孔耦合构成的多注速调管输出回路。从理论上阐述了调 节该输出腔的外观品质因数的原理和方法，并利用三维电磁场软件 CST 进行了模拟验证，得到 TM310 模场分布均 匀的，具有较低外观品质因数的同轴输出腔。 关键词：多注速调管；孔耦合；高阶模 TM310 ；场分布；外观品质因数 中图分类号：TN122+.5 文献标识码：A 文章编号：1009-5896(2008)06-1521-04 Research on Field Distribution of TM310 Mode in Cylindrical Coaxial Cavity Resonator with Coupling of Waveguide Hole ①② ① ① Cao Jing Ding Yao-gen Shen Bin ① (Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China) ② (Graduate University of Chinese Academy of Sciences, Beijing 100039, China) Abstract: Output circuit of multi-beam klystron, which is consist of coaxial cavity with high-order mode of TM 310 and coupling of waveguide hole, is analyzed in this article. Some methods and steps of adjusting external Q-factor of cavity are described in theory. Some simulations are also made using CST MicroWave Studio (MWS). Output cavity with symmetrical field distribution of TM310 mode and low external Q-factor is obtained in this article. Key words: Multi-beam klystron; Hole coupling; High-order mode of TM310; Field distribution; External Q-factor