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开口谐振单环(Split Single Ring Resonators,简记SSRRs)和开口谐振环(SRRs)一样可以激励磁谐振,从而实现负的磁导率。提出在SSRRs结构中引入平行于其开口边的金属线的方法设计了新的磁谐振单元,研究了金属线的引入对谐振频率以及负磁导率特性的影响。数值模拟结果表明:随着金属线长度l的增加,SSRRs的谐振频率随之减小;随着金属线与开口边的间距d的增加,SSRRs的谐振频率随之增加。金属线的加入不会对SSRRs的负磁导率特性产生重要影响,改变金属线的结构参数可以实现μ’<0频段的调控。所提出的新的磁谐振单元对于新型负磁导率材料和新型左手材料的设计具有重要的实际意义,也为新型无线通信材料的实现提供了可能。
Split Single Ring Resonators (SRRs), like Open SRs, can excite magnetic resonance and thus achieve negative permeability. A new magnetic resonance unit is proposed by introducing a metal line parallel to the opening edge of the SSRRs structure. The effect of the introduction of the metal line on the resonance frequency and the negative permeability characteristic is studied. The numerical simulation results show that the resonance frequency of SSRRs decreases with the increase of the length l of the metal wire, and the resonance frequency of the SSRRs increases with the increase of the distance d between the metal wire and the opening edge. The addition of metal wire will not have a significant impact on the negative permeability characteristics of SSRRs. Changing the structural parameters of metal wire can realize the control of μ ’<0 band. The proposed new magnetic resonance unit is of great practical significance for the design of new negative permeability materials and new left-handed materials, and also provides the possibility of implementing new wireless communication materials.