基于斜三角开口对环的宽带低耗左手材料

本文将磁谐振环-金属线共面结构与磁谐振环相结合, 提出了一种基于斜三角开口对环结构的新型宽频带低耗左手材料结构. 该结构能产生两个磁谐振, 实现两个双负频段. 研究表明, 调节单元尺寸可使两个双负频段移动重合形成一个宽频带. 理论分析、仿真和测试结果均表明, 本文提出的新形结构在9.3—13.2 GHz频段同时具有负的磁导率和负的介电常数, 相对带宽34.7%, 损耗性能系数347.9, 实现了宽带低耗左手材料. 其研究结果对多频段、宽带低耗左手材料的设计具有重要的指导意义.

Broadband and low-loss left-handed metamaterial composed of oblique triangular open-loop pairs resonator

A method of realizing multiband and broadband left-handed metamaterials with low-loss is presented. By integrating oblique triangular open-loop pair resonator plus wire (OTOR-wire) with oblique triangular open-loop pair resonator (OTOR), the combined structure exhibits double LH passbands, which can form broad LH passband by adjusting the unit cell geometrical dimension. Simulation and experimental results and analysis demonstrate that this structure exhibits negative effective permittivity and permeability simultaneously in a frequency range from 9.3 GHz to 13.2 GHz, its relative negative refraction passband reaches 347%, and the figure of merit reaches 347.9. The idea can help us to design multiband and broadband left-handed metamaterials with low-loss