物理学报2016，Vol.65Issue(16)：164101-1-164101-6,6.DOI:10.7498/aps.65.164101
基于多开口田字形宽频带低损耗左手材料∗
Broadband and low-loss left-handed materials based on multi-op ening cross shap e structures
摘要
Abstract
The unique electromagnetic properties of left-handed materials have received much attention due to their appli-cations 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.关键词
左手材料/多开口田字形/宽频带/低损耗Key words
left-handed materials/multi-opening cross-shape/broadband/low-loss引用本文复制引用
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):164101-1-164101-6,6.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.* Project supported by the National Natural Science Foundation of China (Grant No.11204046) and the Program for International S&T Cooperation Projects of the Ministry of Science and Technology of China (Grant No.2014DFA00670) （批准号:11204046）
