矩形π-TM_(310)模双间隙腔加载同轴滤波器型宽带输出电路的实验研究

Experimental Study of Broadband Output Circuit of Rectangula π-TM_(310) Mode Double-Gap Cavity Loaded by Coaxial Line Filter

本文详细介绍了矩形π-TM310模双间隙腔同轴滤波器型输出电路的实验研究过程,以及针对一些关键技术难点所采取的改进措施.测试数据显示,矩形π-TM310模双间隙腔与输出同轴线的耦合强度适中,其外观品质因数30左右,在加载同轴线之后各个电子注孔特性阻抗的均匀度仍然较好;矩形π-TM310模双间隙腔同轴滤波器型输出电路的输出频带较宽,在X波段有800MHz带宽,而且相频特性很好.这些测试数据与模拟计算结果一致,验证了关于矩形π-TM310模双间隙腔同轴线宽带输出电路的理论研究结论的正确性.此项实验研究结果充分说明,矩形π-TM310模双间隙腔同轴滤波器型输出电路有利于提高X波段大功率多注率速调管的效率和带宽,并且应用于实际研制工程也确实可行.

The process of experimental study of a broadband output circuit of rectangular π-TM310 mode double-gap cavity loaded by coaxial line filter is introduced.Meliorative structure and some improved measures aiming at the main technical difficulties are taken to obtain reliable experimental results.The tested data show that the rectangular π-TM310 mode double-gap cavity couples with the output coaxial line moderately,the external quality factor is about 30,and the characteristic impedances along different beam holes remain uniform.The broadband output circuit of rectangular π-TM310 mode double-gap cavity loaded by coaxial line filter has a relatively wide band,the bandwidth in X band reaches 800MHz,and the phase delay is linear with frequency.These tested data are consistent with simulation result and confirm the conclusions of theoretical researches.The results of this experimental study demonstrate that the broadband output circuit of rectangular π-TM310 mode double-gap cavity loaded by coaxial line filter will be favorable to upgrading efficiency and bandwidth of X band high-power multi-beam klystrons,and the application to the practical development engineering is feasible.