Extraordinary Transmission and Radiation From Finite by Infinite Arrays of Slots
Extraordinary Transmission and Radiation From Finite by Infinite Arrays of Slots
复制标题
从有限到无限的槽阵列的非凡传输和辐射
DOI：
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发表时间：
2020
影响因子：
5.7
通讯作者：
J. Sambles
中科院分区：
文献类型：
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作者：
M. Camacho;R. Boix;F. Medina;A. Hibbins;J. Sambles
在这种通信中，一个有效的矩量法（MoM）的代码被用于分析的非常传输（EOT）通过一个周期性阵列的矩形槽在导电屏幕上，在槽的数量是有限的，在一个方向和无限的情况下，在正交方向。槽可以在周期性单位单元内任意旋转。一旦通过矩量法获得槽上的磁流密度，则计算槽阵列的透射系数和远场辐射。EOT的发病原来是强烈依赖于相对于阵列是无限的方向的插槽的取向。如果插槽垂直于此方向，则EOT将显示为单个无限插槽链。然而，当槽沿着平行链方向对齐时，需要数十个平行的槽链来再现EOT响应。所得到的辐射方向图示出的激励栅瓣的槽的数量增长的方向上的阵列是有限的。
In this communication an efficient method of moments (MoM) code is used for the analysis of the extraordinary transmission (EOT) through a periodic array of rectangular slots in a conducting screen, in the case where the number of slots is finite in one direction and infinite in the orthogonal direction. The slots can be arbitrarily rotated within the periodic unit cell. Once the magnetic current density on the slots is obtained by means of MoM, both the transmission coefficient and the far-field radiated by the array of slots are computed. The onset of EOT turns out to be strongly dependent on the orientation of the slots with respect to the direction in which the array is infinite. If the slots are perpendicular to this direction, EOT appears for a single infinite chain of slots. However, tens of parallel chains of slots are required to reproduce the EOT response when the slots are aligned along the parallel chains direction. The obtained radiation patterns show the excitation of grating lobes as the number of slots grow in the direction where the arrays are finite.