基于分形的左手材料设计  

Left-handed metamaterials design based on fractal geometry

作　　者：陈华[1] 贾佳 贾媛媛[1] 陈喆思[3] 

机构地区：[1]成都军区疾病预防控制中心,四川成都610021 [2]空军装备部综合计划部信息中心,北京100843 [3]成都军区总医院康复医学科,四川成都610083

出　　处：《现代电子技术》2015年第8期96-98,102,共4页Modern Electronics Technique

摘　　要：为了寻找一种设计出特异媒质单元结构的可行方法,利用分形理论中的文法构图法,采用不同的公理和改写规则,设计出两种全新的分形图案,之后将其周期性地分别蚀刻在介质板两面,通过电磁仿真软件HFSS得到其散射参数的幅值和相位,利用等效参数提取软件提取其等效参数,成功构造出特异媒质中的一类,即左手材料,且在5.5～6 GHz频率下其等效介电常数和等效磁导率均为负。利用分形理论构造特异媒质单元结构的方法是方便可行的,且图形有无穷可能性。To find a feasible way to design metamaterial structure,by using different axioms and rewriting rules,two kinds of new fractal pattern were designed,and then periodically etched in the medium plate on both sides respectively. The amplitude and phase of scattering parameter were obtained with electromagnetic simulation software HFSS. The equivalent parameter is extracted with the equivalent parameter extraction software. The lefthanded metamaterial in peculiar medium was successfully constructed,whose equivalent dielectric constant and equivalent permeability are both negative under 5.5～6 GHz frequency. The method to construct metamaterial structure by using fractal theory is convenient and feasible,and the graphics have infinite possibility.

关 键 词：分形 左手材料 等效介电常数 等效磁导率 

分 类 号：TN82-34[电子电信—信息与通信工程]