aperture admittance

A "spectral expanded BEM" is introduced to calculate the dyadic Green's functions in the slot cavity and in the space out of waveguide. An accurate numerical calculation on the slot aperture electrical field and equivalent admittance is obtained.

本文将谱展开与边界元方法相结合，解决了波导壁缝隙腔中和波导外空间并矢Green函数的计算问题，从而得到了矩形波导窄边缝隙天线口面电场和等效导纳的精确数值解。

Once the cavity aperture admittance matrix is obtained, the aperture equivalent magnetic current and the backscattered field are found by the generalized network principle.

最后由广义网络原理求解腔体的口径等效磁流及后向散射场。

Using the connection algorithm, the aperture admittance matrix of the cavity can be derived by cascading the admittance matrices of individual sections.

然后利用连接算法得到整个腔体的口径导纳矩阵。

Finally based on the calculated and the experimental results, the electricfield distribution at the aperture suface, the admittance, the resonant conductance, and the resonant length of the slots are discussed.

文章最后根据计算和实验结果，讨论了缝隙的耦合对缝隙的口径场分布，导纳特性，谐振电导和谐振长度等特性参数的影响。