微带线法测量介质材料的高温介电常数  

Microstrip Line Method to Measure the High Temperature Dielectric Constant of Dielectric Materials

作　　者：冀元 唐章宏[1] 王群[1] 李永卿[1] 赵锐 郭荣斌 Ji Yuan;Tang Zhanghong;Wang Qun

机构地区：[1]北京工业大学材料与制造学部 [2]青岛兴仪电子设备有限责任公司

出　　处：《安全与电磁兼容》2022年第1期44-48,67,共6页Safety & EMC

基　　金：国家重点研发计划材料高温环境电磁特性测试仪集成研制(2018YFF01013601)。

摘　　要：微波介质材料的电磁参数决定了其在各领域的应用性能。为探索高温条件下介电常数的变化趋势,文章讨论了设有空气隔热层时的微带线法测量原理,分析了微带线法测量不确定度的影响因素。完成了介质材料1~40 GHz的常温、高温介电常数测量,并对测量结果的不确定度进行评估。测量结果表明:20 GHz以上,介电常数的相对不确定度略有增加,微带线法的测量结果较为准确。The electromagnetic parameters of microwave dielectric materials determine its application performance in various fields.In order to explore the variation trend of dielectric constant under high temperature,this article discusses the principle of the microstrip line method when an air insulation layer is installed,and analyzes the influencing factors of the measurement uncertainty of the microstrip line method.The dielectric constants of dielectric materials at room temperature and high temperature of 1~40 GHz are measured in this article,and the uncertainty of the measurement results is evaluated.The measurement and analysis results show that the relative uncertainty of the dielectric constant above 20 GHz is slightly increased.Meanwhile,the measurement results show that the microstrip line method is more reliable.

关 键 词：介电常数 微带线 高温 不确定度分析 

分 类 号：TB30[一般工业技术—材料科学与工程]