微波陶瓷介质谐振器优选组合检测法  

Optimized combination detection for microwave ceramic dielectric resonator measurement

作　　者：肖芬[1] 董晓盈[1] 陈赐海[2] 熊兆贤[3] 

机构地区：[1]厦门大学物理系,厦门361005 [2]漳州师范学院物理系,漳州363000 [3]厦门大学材料系,厦门361005

出　　处：《仪器仪表学报》2008年第2期295-298,共4页Chinese Journal of Scientific Instrument

基　　金：国家863计划(2001AA325100);福建省自然科学基金(11081087);厦门大学创新基金(70009)资助项目

摘　　要：微波介质陶瓷材料的介电性能主要由3个参数表示:介电常数、介质损耗和谐振频率温度系数。本文优选组合了3种检测介质谐振器方法:短路型介质谐振器轴向的短路界面测定方便准确,用于测量微波介质陶瓷材料的相对介电常数;开路型平行板与介质谐振器无直接接触,用于测量介质损耗系数;自行研制的旋转开放腔,可同时放置多个样品,加快温度系数的测量速度。3个参数采用3种不同测试法,充分应用了不同测试法各自的优势,满足微波介质陶瓷材料介电常数跨度大、介质损耗低、温度系数快速测量的需求,可得到精确、快速的测试效果。Dielectric properties of microwave dielectric ceramic material are featured in three parameters： complex permittivity, dielectric loss and temperature coefficient of resonant frequency. In this paper, a short-circuited resonator method is developed to measure the complex permittivity of a microwave dielectric material ; an open - circuited parallel plate resonator method is developed to measure the dielectric loss due to the fact that the dielectric resonator does not contact the open parallel plates physically; the temperature coefficient of the resonant frequency is efficiently measured in a rotary open resonator cavity designed by ourselves. All the parameters are measured precisely and efficiently by taking the respective advantages of short-circuited and open-circuited methods to satisfy the specific measurement requirements of microwave dielectric material.

关 键 词：介质谐振器 介电常数 损耗系数 温度系数 

分 类 号：TN015[电子电信—物理电子学] TQ174[化学工程—陶瓷工业]