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本文阐述利用微带天线测量薄板型介质材料介电常数的方法。基本的试验装置是矩形微带天线,其补片既可以中心馈电,也可以偏心侧馈。借助计算机程序,可由微带天线的输入阻抗特性或谐振参数直接求出介电常数。文中给出输入阻抗和介电常数的实测结果和计算结果,其吻合程度是相当好的。
This article describes the use of microstrip antennas to measure the dielectric constant of sheet-type dielectric materials. The basic test device is a rectangular microstrip antenna, the patch can either feed the center, you can also eccentric side feed. With the aid of a computer program, the dielectric constant can be derived directly from the input impedance characteristics of the microstrip antenna or from the resonance parameters. The experimental results and calculation results of input impedance and dielectric constant are given in this paper. The degree of agreement is quite good.