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提出一种基于磁导率近零超材料实现对称振子方向性辐射的技术手段。使用经典的开口谐振环结构,设计出工作在10 GHz附近的磁导率近零超材料,并将其放置于对称振子天线周围,在水平面内将原天线的全向辐射转化为多波束辐射。对比了各向同性和各向异性磁导率近零超材料在方向性辐射中的性能,全波仿真结果表明,各向异性超材料的性能更优异。使用磁导率近零超材料实现了3个波束的高方向性辐射,该种技术方案可以降低多点之间通信的建设费用,有一定的工程应用前景。
Abstract：A technique based on mu-near-zero( MNZ) metamaterial is proposed to achieve directive radiation of dipole antenna.The MNZ metamaterial operating around 10 GHz is constructed with classical split ring resonators. The originally omnidirectional radiation of a dipole antenna is converted into multibeam radiation by loading with MNZ metamaterial. The radiation performances of the isotropic and anisotropic MNZ metamaterials are compared,and the full wave simulation results show that the anisotropic metamaterial is superior to its isotropic counterpart. Finally,a multibeam radiation with three directions is illustrated by using MNZ metamaterial,which could reduce the construction cost of multipoint communication and have some potential applications in engineering.
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基本信息:
中图分类号:O441.6
引用信息:
[1]丁宁,何应然,张文静.磁导率近零超材料实现方向性辐射[J].无线电工程,2015,45(02):46-50.
基金信息:
国家部委基金资助项目