级联网络分解法在材料电磁参数测量中的应用

Application of the decomposing cascade network method for measuring the electro-magnetic parameters of microwave materials

介绍了一种由三级级联网络构成的取样器,论述了分式线性变换级联网络分解法,并利用奇偶模法计算被测材料的复电磁参数.该方法适用于糊状及粉末状材料电磁参数的测量.给出了多种材料测量实例和数据,并根据不同测量对象的特征,讨论了一些值得重视的误差因素和修正方法.

This paper presents one kind of sampler formed by the cascade network with three segments, and discusses the decomposing cascade network method with the linear fraction transformation. By using the odd-even mode method, the electro-magnetic parameters of the material under test are easy to obtain. The method can be used to measure the electro-magnetic parameters of the mushy and powdered materials. Moreover, the measured data of several kinds of material are given. According to the features of different measured objects, techniques for correcting some noticeable error factors are also discussed.