可多重聚焦电磁能量的左手材料结构(英文)  

Structure of left-handed-materials for splitting electromagnetic energy

作　　者：林振[1] 马雪莹[1] 梁昌洪[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,西安710071

出　　处：《强激光与粒子束》2007年第7期1183-1186,共4页High Power Laser and Particle Beams

基　　金：Supported by National Basic Research Program(973)of China(00300113)

摘　　要：功分器在微波工程中广泛应用。基于有损耗的Lorentz模型的时域有限差分(FDTD)方法,分析模拟了左手材料(LHM)的平板结构和环状结构对电磁波源的不同聚焦特性。每个左手材料边界均可以对波源发出的波进行聚焦。同时通过比较,在对称结构中,每个聚焦点的电磁场幅度都相同。说明该左手材料结构可以对电磁波源进行多点聚焦。The energy-splitter is widely used in microwave engineering. Finite-difference time-domain （FDTD） method is used to analyze and verify new accurate energy-split structures with perfectly matched lossy left-handed-material（LHM） slabs or ring. From these numerical simulations, the sub-energy-sources at the outer focusing image points of each LHM slab are generated. All of the sub-energy-sources have almost the same magnitude in such symmetric structures. The energy splitting effect of these new LHM structures.can be seen.

关 键 词：功分器 时域有限差分方法 左手材料 多重聚焦 

分 类 号：TN011[电子电信—物理电子学]