片状介质材料复介电常数优化计算及测量

Optimal computation and measurement of permittivity of flake dielectric materials

采用终端短路同轴开口波导技术,将开口同轴波导作为传感器,测量样品加载时的复反射系数,运用优化迭代反演求得待测材料的相对介电常数.详细介绍了所采用的理论模型和测量系统,测量了一些常见介质材料的复反射系数,复反射系数参考值与理论计算值基本吻合,证明了该方法的合理性及可行性.

Based on an open-ended flanged coaxial probe technique, this paper measures complex permittivity of flake dielectric materials loading at the end of a probe. The method compares measured values and theoretically calculated values, the measured values being processed by optimization iteration computation. This paper introduces a theoretical model and the measurement system in detail. Feasibility and rationality of the presented method are shown by measuring some common materials.