高阶体模开放式谐振腔测试平台的设计与仿真验证  

Lab-Built Test Platform for Evaluation of High-Order Body Mode Open Resonator of Gyrotron Oscillator

作　　者：焦梦龙 罗积润 李志贤 文政 杨晨 郭炜 朱敏 Jiao Menglong;Luo Jirun;Li Zhixian;Wen Zheng;Yang Chen;Guo Wei;Zhu Min(Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 101407,China;University of Chinese Academy of Sciences School of Electronic,Electrical and Communication Engineering,Beijing 100149,China)

机构地区：[1]中国科学院空天信息创新研究院,北京101407 [2]中国科学院大学电子电气与通信工程学院,北京100149

出　　处：《真空科学与技术学报》2020年第7期646-652,共7页Chinese Journal of Vacuum Science and Technology

摘　　要：设计了一套回旋振荡器高阶体模开放式谐振腔自动扫描测试装置。该装置通过计算机程序控制,采用BJ1400标准矩形波导作为天线检测辐射场,扫描精度可达0.05 mm,具有100 dB的动态范围。以140 GHz的TE28,8高阶体模谐振腔场分布检测为例,当扫描步长在水平方向和垂直方向分别取0.5 mm和0.3 mm时,y方向电场波峰和波谷的检测数据相差约10 dB。A computer-controlled automatic test platform was developed for evaluation of the open resonant cavity operating in high-order body mode of a gyrotron oscillator.The lab-built test platform comprises:host computer,mobile 3 D orientation manipulator,standard rectangular waveguide antenna,vector network analyzer(VNA),step-motor and control unit.The scanning precision and RF signal dynamic range were optimized to be 0.05 mm and of^100 dB,respectively.The field distributions,of the 140 GHz TE28,8 high-order body mode resonant cavity,were experimentally evaluated with the test platform and numerically simulated.The measured and simulated results were in good agreement.For example,scanning at 0.5 mm X-step and 0.3 mm Y-step,the field crest-rough difference in Y-direction was measured to be about 10 dB.

关 键 词：回旋管振荡器 高阶体模 开放式谐振腔 测试仿真 

分 类 号：TN129[电子电信—物理电子学]