導電平板上任意孔縫的TM波散射及傳輸特性分析
TM SCATTERING AND TRANSMISSION PROPERTIES OF AN ARBITRARY SLIT IN A CONDUCTING PLATE
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摘要: 該文利用邊界積分法分析導電平板上任意孔縫的TM波散射及傳輸特性,并引入了一種基于微波網絡原理的連接算法以緩解計算機內存對所計算孔縫尺寸的限制。首先將孔縫內腔分為幾段,用積分方程法分別計算每段的廣義導納矩陣,然后利用連接算法將各段連接起來得到整個孔縫的口徑導納矩陣,最后由廣義網絡原理求解孔縫的等效磁流、后向散射場以及傳輸系數(shù)。Abstract: This paper deals with the electromagnetic characterization of the transmission and scattering properties of a slit in a conducting plate for TM polarization. To alleviate computational constraints for the problem, a connection algorithm is developed based on microwave network theory.In this paper,the slit can be divided into sections and the generalized admittance matrix of each section can be computed by the boundary integral method. Using the connection algorithm,the aperture admittance matrix of the slit can be derived by cascading the admittance matrices of individual sections. Once the slit aperture admittance matrix is obtained,equivalent magnetic currents,the backscattered field, and the transmission coefficient are found by the generalized network principle.
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