零电磁材料聚焦器

Zero-electric and zero-magnetic material focuser

基于二维LC网络,设计了一种零电磁材料聚焦器,导出了该器件等效节点电压分布矩阵,研究了聚焦区域为三角形、四边形、六边形、八边形的电磁聚焦器,并在此基础上仿真了形状和尺寸对其聚焦特性的影响。结果表明:当聚焦区域小于两倍波长时,该器件的特性与聚焦区域的形状无关;当聚焦区域逐渐增大时,焦点的能量也随之增强;当聚焦区域大于两倍波长时,主焦点逐渐消失,同时将产生多个副焦点。

Based on two dimensional LC network, a zero-electric and zero magnetic material （ZEM） focuser is designed, and the equivalent node voltage distribution matrix is derived. The focuser with triangular, quadrilateral, hexagonal and octagonal contours is investigated, and the effects of shape and size on its performance are simulated. The results show that, the focusing effect is independent of the shape of the focuser when the size of the focusing area is smaller than twice the wavelength; energy at the focus point increases gradually with the focusing area; when the size of the focusing area is bigger than twice the wavelength, the main focusing area disappears and a number of sub-focusing points are generated at the same time.