为了减小辐射损耗,可以用介质覆盖层来屏蔽微带线。利用环形谐振器进行的实验表明,可使插入损耗显著降低。这些屏蔽微带线的有效介电常数是用变分法计算的。其结果与实验非常吻合。 In order to reduce the radiation loss, you can use the media cover to shield the microstrip line. Experiments using ring resonators have shown that the insertion loss can be significantly reduced. The effective permittivity of these shielded microstrip lines is calculated using the variational method. The results are in good agreement with the experiment.