关键词: 复介电常数;电导率;谐振腔

    摘 要:目的 研究2450MHz频率下复介电常数测量系统的可靠性. 方法 分别测量低损耗介质和高损耗介质的复介电常数，对比测量值和标称值的差异，检验测量结果的可靠性和可重复性. 结果 对低损耗和高损耗介质的测量精度都较高，测量误差较小. 结论 此测量系统能较准确地测量2450MHz频率下介质的复介电常数.

    Research of2450MHz complex┐permittivity mea┐surement system

    GAO Yue，YANG Guo-Sheng，WANG Jian-Qi，WANG Hua，FAN Xiao-Yu

    Department of Electronics，Faculty of Biomedical Engineering，Fourth Military Medical University，Xi'an710033，China

    Keywords:complex-permittivity;conductivity;resonant cav-ity

    Abstract:AIM To study the reliability of complex-permit-tivity measurement system at2450MHz.METHODS The complex-permittivity of low-loss and high-loss dielectric ma-terials were measured separately ......