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本文用时域有限差分(FDTD)法计算了矩形波导中E面膜片的等效参量.为了很好地吸收波导中的散射波,采用了一种高精度的稳定的色散边界条件来截断计算空间.在考虑膜片厚度时.本文用环路积分法建立起膜片附近的修正迭代格式.所得结果与文献中的结果吻合.
In this paper, the equivalent parameters of the E-facets in a rectangular waveguide are calculated by the finite-difference time-domain (FDTD) method. In order to absorb the scattered waves well in the waveguide, a highly accurate and stable dispersion boundary condition is used to cut off the computational space. When considering the thickness of the diaphragm, a loop iteration method is used to establish a modified iterative scheme in the vicinity of the diaphragm. The obtained results agree well with those in the literature.