【摘要】 多层周期阵列结构分解为多个位于介质半无限空间的单屏结构的级联,采用谱域矩量法,分析单屏结构,之后应用广义散射矩阵法(GSM),将单屏结构的散射矩阵进行级联,得到多层阵列结构的散射特性。最后选取若干算例进行数值仿真,结果表明,方法对多种周期阵列结构具有广泛的适用性,仿真软件CST计算结果说明算法的正确性。通过对多层结构散射特性的分析,说明多层周期阵列结构具有更陡峭的带通、带阻等滤波性能,还可实现宽频与多频点工作,具有较好的应用前景。更多还原

【Abstract】 Multilayered Periodic Array Structure is decomposed into several single screens with or without periodic metallic patches located on the interface of two dielectric half spaces. Using spectral domain moment method,scattering matrix of each single screen was obtained. Then the scattering matrices of single screens were cascaded iteratively by generalized scattering matrix to obtain the scattering characteristic of multilayered periodic array structure. Finally several numerical simulation results were presented. Simulation results showed the good agreement with other published paper and CST simulated results. The simulation also demonstrated that the method has wide applicability,and the multilayered periodic structure preserves better band-pass or band-stop characteristics,and can be used in broad-band or multi-band cases.更多还原