【摘要】 本文对介质薄层上折线周期结构的电磁特性作了研究,考虑了介质薄层中高次模对折线电流的影响,给出了金属一介质层等效电纳的解析表达式。在建立积分方程时,运用平面高斯定理改善了级数的收敛性。通过适当选取全域基函数,使电流积分方程的求解速度较用脉冲基函数求解也有了很大的提高。更多还原

【Abstract】 In this paper,the electromagnetic scattering by a periodic meander-line array on a thin dielectric sheet is studied. The effect of the thin dielectric sheet to higher modes is considered. The paper presents more rigorous analytic expressions of equivalent susceptance for metal-dielectric sheet, and points discrepancy caused by Terret’s method. In deriving the integral equation, the convergence of series is modified by application of the plane Gauss Theorem. Because the basis functions of unknow current are properly seclected, the solution can be quickly obtained. Experimental result, using a two identical sheet polarizer, are compared with that from theoretical computation, and it shows that the analysis is correct.更多还原