计算多层介质中微带环谐振器谐振频率的频域方法

A Simple Method for Computing the Resonant Frequencies of Microstrip Ring Resonators in Multilayer Structure Dielectric

本文介绍计算多层介质微带环谐振器谐振频率的一种频域方法。它是基于电磁场理论中“反应原理”,由求解不同区域中满足边界条件的波动方程出发 ,通过傅立叶 -汉克尔变换得到频域中的一个广义积分方程。根据该方程的数值结果 ,可获得各种模式下的谐振频率随第二层介质层厚度及介电常数的变化曲线。与变分法比较 ,一致性很好。这种微带环谐振器在微波热疗中有着广阔的应用前景 ,本文结果将对临床应用起到一定的指导意义。

In this paper, a method for computing the resonant frequencies of microstrip ring resonators in multilayer structure dielectric is presented. Based on the well known 'reaction concept' of electromagnetic theory ,a generalized integral equation is derived by using the bounday conditions is in different domains and Fourier Hankel transformation.the results are in good agreement with those obtained by using variational method. The microstrip ring resonat is widely used as the microwave hyperthermia applicator . The results will play an important role in clinical use in the future.