用于增益增强的分形启发超材料衬底

Q2 Engineering
B. K. A. Shaji, A. Pradeep, P. Mohanan
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引用次数: 3

摘要

本文提出了一种分形激励的超材料衬底,用于增强2.4 GHz微带贴片天线的增益。超材料单元胞采用分形结构,设计在厚度为1.6 mm的FR4衬底上。超材料单晶电池在2.4 GHz时折射率接近于零。该超层由2×2阵列的超材料单元组成,充当法布里-珀罗(FP)腔的部分反射表面。利用FP谐振条件优化了天线与衬底之间的距离。该天线具有比微带贴片天线更多的定向辐射方向图。该天线的峰值增益为7 dBi,增益增强4 dB,波束宽度沿H面和E面分别减小23°和2°。天线的孔径效率为80.47%。采用有限元法对整个结构进行了仿真分析。仿真结果与实测结果吻合较好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fractal Inspired Metamaterial Superstrate for Gain Enhancement
In this paper, a fractal inspired metamaterial superstrate is proposed for the gain enhancement of microstrip patch antenna resonating at 2.4 GHz. Fractal structure is used as the metamaterial unit cell, which is designed on a FR4 substrate with a thickness of 1.6 mm. The metamaterial unit cell exhibits near-zero refractive index at 2.4 GHz. The superstrate consists of a 2×2 array of metamaterial unit cells which acts as a partial reflective surface of Fabry-Perot (FP) cavity. The distance between the antenna and the superstrate is optimized by the FP resonance condition. The antenna has a directional radiation pattern more than the microstrip patch antenna. The antenna gives a peak gain of 7 dBi with a gain enhancement of 4 dB and a beamwidth reduction of 23° and 2° along H plane and E plane respectively. The aperture efficiency of the antenna is 80.47%. The whole structure is simulated and analyzed using finite element method. The simulated and the measured results show good agreement.
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来源期刊
CiteScore
2.90
自引率
0.00%
发文量
17
期刊介绍: The International Journal on Communications Antenna and Propagation (IRECAP) is a peer-reviewed journal that publishes original theoretical and applied papers on all aspects of Communications, Antenna, Propagation and networking technologies.
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