异向性材料的多带特性研究及在天线中的应用

设计了一种由两种不同谐振单元套构而成并按周期排列组成的平面型异向性材料,该平面结构由三角形和五边型的金属贴片周期平铺构成上表面,并通过金属化导孔与下底板的金属底板连接.实验和数值模拟显示这类表面的横电模式极化和横磁模式极化的表面波具有多带隙的丰富能带结构,同时它还有多个磁性谐振频率,实验和理论显示这些磁性谐振所对应的多个同位相反射区落在两个表面波带隙中.该研究提供了一种多带的平面型异向性结构的设计思想,在天线基板和微波电路噪声抑制中具有广泛的应用.

Multiband Properties of the Metamaterials and its Application in Antenna Substrate

We suggested one kind of planar Metamaterials with periodic patterns tiled by two resonant components, which consist of triangular and pentagonal patch arrays and a metallic ground plate interconnected by via arrays together. This structure possesses common spectra gaps with transverse-electric surface waves and transverse-magnetic surface waves, a multiple of in phase frequency regimes to characterize magnetic resonances are also within those spectra gaps, which were detected both by measuring return loss of an antenna near the surface and by FDTD simulations. The study provides one methodological design on multi-band planar metamaterials, to be applied in antenna substrate and noise suppression in microwave circuits.