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基于多开口田字形宽频带低损耗左手材料
引用本文:吴良威,张正平.基于多开口田字形宽频带低损耗左手材料[J].物理学报,2016,65(16):164101-164101.
作者姓名:吴良威  张正平
作者单位:1. 贵州大学大数据与信息工程学院, 贵阳 550025;2. 贵州航天计量测试技术研究所, 贵阳 550000
基金项目:国家自然科学基金(批准号:11204046)和国家科技部国际科技合作项目(批准号:2014DFA00670)资助的课题.
摘    要:提出了一种基于多开口田字形单元结构实现材料左手特性的设计方案.该结构是在介质基板单侧集成电、磁谐振器形成左手单元.通过理论分析、软件仿真、加工测试、提取有效电磁参数,结果表明该结构在12.7—21.1 GHz范围内具有双负特性(等效介电常数ε0,等效磁导率μ0),基本覆盖Ku波段,绝对带宽可达8.4 GHz,单元损耗低于0.3 d B.同传统的左手材料相比,该结构以更小的单元尺寸,更低的损耗实现了更宽的左手频带,为宽频带、低损耗微波左手材料的设计及广泛应用提供了重要参考.

关 键 词:左手材料  多开口田字形  宽频带  低损耗
收稿时间:2016-02-29

Broadband and low-loss left-handed materials based on multi-opening cross shape structures
Wu Liang-Wei,Zhang Zheng-Ping.Broadband and low-loss left-handed materials based on multi-opening cross shape structures[J].Acta Physica Sinica,2016,65(16):164101-164101.
Authors:Wu Liang-Wei  Zhang Zheng-Ping
Institution:1. College of Big Data and Information Engineering, Guizhou University, Guiyang 550025, China;2. Guizhou Aerospace Measurement and Testing Technology Research Institute, Guiyang 550000, China
Abstract:The unique electromagnetic properties of left-handed materials have received much attention due to their applications in microwave devices, radar antenna and electromagnetic stealth and so on. However, the double side etching of dielectric substrate for most traditional left-handed materials will lead to the complexity of manufacture, narrow left-handed bandwidth and higher loss. In order to overcome the shortages of traditional left-handed materials, a new broadband and low-loss left-handed material with multi-opening cross shape structure is presented in this paper. The structure is fabricated on a single side of a dielectric substrate by integrating an electric resonator with a magnetic resonator to form a left-handed unit. Through theoretical analysis, software simulation and effective electromagnetic parameters extraction, the results show that the structure has a double negative characteristics (ε <0, μ <0) in the 12.7-21.1 GHz range, which is basically in the Ku band. The absolute bandwidth of left-handed character is up to 8.4 GHz and the loss of unit cell is less than 0.3 dB. The structure realizes a wider left-handed bandwidth with smaller cell size and lower loss than the conventional left-handed materials, and it provides an important reference for the application and design of the broadband and low-loss microwave left-handed materials.
Keywords:left-handed materials  multi-opening cross-shape  broadband  low-loss
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