π-TM610模同轴双间隙腔耦合同轴线输出电路.PDFVIP

第 31 卷第 10 期 电 子 与 信 息 学 报 Vol.31No.10 2009 年 10 月 Journal of Electronics Information Technology Oct. 2009 π-TM610 模同轴双间隙腔耦合同轴线输出电路 王宏义① 林福民② ①(汕头大学物理系 汕头市 515063) ②(广东工业大学物理与光电工程学院 广州 510006) 摘 要：该文提出一种适合于 X 波段多注速调管的 π-TM610 模双间隙同轴腔的同轴线输出电路，并详细分析了其 带宽和输出功率容限等重要性能，结果表明：π-TM610 模双间隙同轴腔耦合同轴线之后，输出腔中各个电子注孔 的特性阻抗仍然很均匀；但由于输出腔外观品质因数太大而且无法使其降低，导致输出频带较窄；输出功率容限则 为 1MW 左右。因此它比较适合作为高射频段的高功率窄带多注速调管的输出电路。 关键词：多注速调管，高次模谐振腔；双间隙同轴腔；π-TM610 模；特性阻抗；外观品质因数 中图分类号：TN122 文献标识码：A 文章编号：1009-5896(2009)10-2518-05 Output Circuit of π-TM610 Mode Double-Gap Coaxial Cavity Coupled with Coaxial Line ① ② Wang Hong-yi Lin Fu-min ① (Department of Physics, Shantou University, Guangdong 515063, China) ② (School of Physics Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China) Abstract: A π-TM610 mode double-gap coaxial cavity loaded by a coaxial line is proposed as the output circuit of X-band multi-beam klystron. Its main performances, such as bandwidth and power capacity, are studied. The results show that characteristics impedances along different beam hole are still almost equal after the output cavity coupled with a coaxial line. But the external quality factor of the output cavity is too large and difficult to diminish, so that the output bandwidth is small. The output power capacity reaches about 1MW. So it is suitable as a proper output circuit of high power narrowband multi-beam klystron of high radio-frequency. Key words: Multi-