一种K波段电磁超材料的设计及其在微带天线中的应用

发布时间：2018-06-30 21:08

本文选题：负磁导率 + 负介电常数　；参考：《现代电子技术》2017年05期

【摘要】：根据电磁材料的相关理论,设计出一种由新型谐振器和金属线组成的电磁双负超材料,即介电常数和磁导率同时为负的电磁材料。新型谐振器通过较小谐振腔并联的方式,在较大的单元尺寸下提高了谐振频率,既使该电磁超材料在K波段实现了双负特性,又保证了材料的辐射面积,克服了高频段超材料由于尺寸太小而难以应用的困难。设计出一种K波段的微带天线,将新型谐振器加载在天线上,并用HFSS软件对未加载谐振器和加载谐振器的天线进行仿真对比。仿真结果表明,相比普通天线,加载新型谐振器的微带天线性能得到明显提升,驻波比2 d B以下的带宽增加了58.3%,增益变大,并且由于谐振器对天线副瓣的抑制,提高了天线的方向性。
[Abstract]:Based on the theory of electromagnetic materials, a new type of electromagnetic double negative supermaterial, consisting of a new resonator and a metal line, is designed, that is, the dielectric constant and the magnetic permeability are negative. The resonant frequency of the new resonator is raised in a larger cell size by the parallel mode of the smaller resonator, and the electromagnetic supermaterial is in the K wave. The section realizes the double negative characteristic and ensures the radiation area of the material, and overcomes the difficulty that the high frequency section supermaterial is difficult to apply because of the small size. A K band microstrip antenna is designed to load the new resonator on the antenna, and the simulation results are compared with the antenna of the unloaded resonator and the loaded resonator with the HFSS software. It is shown that the performance of the microstrip antenna with the new resonator is obviously improved compared with the normal antenna. The bandwidth under 2 D B in Bobbi is increased by 58.3%, the gain becomes larger, and the directional of the antenna is improved because of the suppression of the antenna sidelobe.
【作者单位】：中国矿业大学机电与信息工程学院;
【基金】：国家自然科学基金资助重点项目(51134024) 中央高校基本科研业务费专项资金项目(2009KJ03)
【分类号】：TN822

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