准光腔平行度对金属电导率测试的影响机制研究  

Research on the influence mechanism of quasi-optical cavity parallelism on metal conductivity testing

作　　者：王雪儿 许晶 刘婷[3] 叶鸣 WANG Xueer;XU Jing;LIU Ting;YE Ming(College of Information and Control Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Shanghai Spaceflight Institute of TT&C and Telecommunication,Shanghai 201100,China;Faculty of Electronics and Information Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安建筑科技大学信息与控制工程学院,西安710055 [2]上海航天测控通讯研究所,上海201100 [3]西安交通大学电信学部,西安710049

出　　处：《空间电子技术》2025年第2期114-120,共7页Space Electronic Technology

基　　金：科技部国家重点研发计划(编号:2023YFB3905604);国家自然科学基金(编号:62271382)。

摘　　要：针对平凹腔型谐振腔法中的平面镜与球面镜的平行度问题,以K波段为例,结合仿真与实测,研究了准光腔平行度对电导率测试的影响。首先,针对样品的不同倾斜方向、旋转半径,在平行度误差±1.2°范围内仿真分析了待测样品倾斜对电导率测试的影响;然后,以K波段的24 GHz频点为例开展了准光腔平行度误差的验证实验。仿真结果表明:电导率测试误差随平行度误差的增加而增加。当样品与球面镜共轴时,±1.2°的平行度误差对应电导率测试误差基本在20%内;K波段的实测结果与仿真所得规律基本一致。Aiming at the problem of parallelism between plane mirrors and spherical mirrors in the planoconcave cavity resonator method,taking the K-band as an example and combining simulation and actual measurement,the impact of quasi-optical cavity parallelism on conductivity testing was studied.First,according to the different tilt directions and rotation radii of the sample,the impact of the tilt of the sample to be tested on the conductivity test was simulated and analyzed within the range of parallelism error±1.2°;then,a quasi-precision experiment was carried out using the 24 GHz frequency point of the K-band as an example.Verification experiment of optical cavity parallelism error.The simulation results show that the conductivity test error increases with the increase of parallelism error.When the sample is coaxial with the spherical mirror,the parallelism error of ±1.2° corresponds to a conductivity test error that is basically within 20%;the actual measurement results of the K-band are basically consistent with the rules obtained by simulation.This study has certain reference significance for evaluating conductivity testing errors.

关 键 词：准光腔 平行度 电导率 微波 平凹腔 

分 类 号：V443[航空宇航科学与技术—飞行器设计] TN06[电子电信—物理电子学]