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.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
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
关键词
介质谐振器
介电常数
损耗系数
温度系数
dielectric resonator
complex permittivity
dielectric loss
temperature coefficient of resonant frequency
