分析双轴电介质加载对称双侧鳍线特性的谱域导抗法

Spectral Domain Immittance Approach for Characteristics Analysis of Symmetrical Bilateral Finline Loaded with Biaxial Medium

本文通过分析和推导,在不考虑TE和TM模耦合影响后,用一网络等效表示双轴电介质加载对称双侧鳍线。将场问题转化为路问题,简化了特征方程的推导过程。在网络中使用理想变压器元件等效双轴电介质与各向同性介质分界面处的场匹配条件。最后对双轴电介质加载对称双侧鳍线的有效介电常数进行了数值计算。结果表明本文近似是合理的,有较高精度的数值解。

The biaxial medium loaded symmetrical bilaterial finline is analysed and an equivalent circuit is used to represent it.when the couple between TE mode and TM mode is neglected. Therefore,the field problem is transformed to a circuit problem, the deduce of the characteristic equation is simplified. The ideal transformers in a network equate mode match condition of the interface between the isotropic and biaxial medium. Finally, the effective dielectric constants of the symmetrical bilateral finline loaded with biaxixl medium have been calculated numerically. Numerical results confirm that the approximation used in this paper is resonable and of high—accuracy.