摘要针对人工电磁介质，结合麦克斯韦方程组，研究其中电磁波传播的性质。运用电磁场边值关系，推导存在负折射率材料介质界面时电磁波的传播规律。给出相关结果的具体应用示例。提出一种基于开口谐振环的新型天线。开口谐振环在很多文献中被用作制备人工电磁介质的结构单元，人工电磁介质的奇异性可以制备各种微波器件和天线。本论文中仅仅取一个开口谐振环结构辐射单元，将双环SRR蚀刻在基片上，结合短路探针来减小尺寸，最后制备了一个紧凑的双频带天线。并给出了这种新型天线的回波损耗、增益、辐射效率的仿真结果。这种采用单个环做主要辐射器的天线能应用到很多对尺寸要求很紧凑的领域，比如射频识别天线以及应用于人体内的设备的前端天线等等。
关键词  人工电磁介质  开口谐振环  双频带  短路探针 紧凑型天线5056
毕业论文设计说明书（论文）外文摘要
Title    Characteristic and application in antenna design for Metamaterial
AbstractThe properties of electromagnetic wave propagation in Metamaterial are investigated by Maxwell’ equations. The propagation law of electromagnetic wave on the interface of negative refractive index material is obtained by use of electromagnetic boundary relation. The application examples of the related results are given. An innovation antenna based on split ring resonators (SRRs)is presented. SRRs have been exhaustively used in the literature as the unit cell of periodic structures for obtaining left-handed media, whose interesting characteristics can be applied to waveguides or antennas. In this work, the authors propose the use of only one unit cell of a double SRR as radiator. The double SRR is printed on a grounded dielectric slab, acting as the radiating element of a microstrip patch antenna, and grounded pins are used to short-circuit the structure for size reduction. A compact dual band antenna is obtained in this way. Simulated results of return losses, gain and radiation efficiency of this new type of patch antenna are provided. This antenna using this unit cell as the main radiator could be useful in realistic scenarios where compactness is required, such as for instance in RFID applications or integrated body communications.

Keywords  Metamaterial  split-ring resonators  dual-band   short-circuit pins    compact antenna
目   次

1  引言    1
1.1 人工电磁介质的发展历史及其研究的科学意义    1
1.2 本文的主要工作    3
2  人工电磁介质的性质    4
2.1 右手材料中电磁波的传播    4
2.2 人工电磁介质中电磁波的性质    6
2.2.1  能流的方向和波矢方向相反    6
2.2.2 逆多普勒频移    7
2.2.3 LHM和RHM界面处菲涅耳公式    7
2.2.4 异常折射现象    7
2.2.5 自聚焦效应    7
3  人工电磁介质的应用    7
3.1 人工电磁介质与天线    7
3.2 人工电磁介质与微波器件    7
3.2.1新型滤波器    7
3.2.2  新型零阶谐振器    7
3.2.3 任意双频带分支藕合器    7
3.3 人工电磁介质与光学器件    7
3.4  SRRs与双频带天线之间的关系    7
4  基于SRRs的微带天线设计    7
4.1 微带线侧边耦合馈电    7
4.1.1 考虑微带线与环的间距的影响。    7
4.1.2  介质板介电常数对谐振频率点的影响。    7 新型谐振式人工电磁介质的特性以及在天线设计中的应用:http://www.751com.cn/tongxin/lunwen_1928.html