基于零折射率超材料的高定向性微带天线

研究了一种基于平面网格状零折射率超材料的高定向性微带天线。利用超材料结构的平均效应实现了在10．24GHz处介电常数为零，进而实现了超材料的折射率为零。实验结果表明，利用零折射率超材料对波束产生汇聚作用，使微带天线的定向性明显增强，E面、H面半功率波束宽度分别收缩了56．67°和26．60°，侧向辐射明显减弱，天线的增益提高了3．80dB。...

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Bibliographic Details
Published in电子技术应用 Vol. 37; no. 6; pp. 110 - 112
Main Author 郭晓静 赵晓鹏 刘亚红 朱卫仁
Format Journal Article
LanguageChinese
Published 西北工业大学应用物理系智能材料实验室,陕西西安,710129 2011
Subjects
微带天线
零折射率
高定向性
零折射率
微带天线
高定向性
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ISSN0258-7998
DOI10.3969/j.issn.0258-7998.2011.06.037

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Summary:研究了一种基于平面网格状零折射率超材料的高定向性微带天线。利用超材料结构的平均效应实现了在10．24GHz处介电常数为零，进而实现了超材料的折射率为零。实验结果表明，利用零折射率超材料对波束产生汇聚作用，使微带天线的定向性明显增强，E面、H面半功率波束宽度分别收缩了56．67°和26．60°，侧向辐射明显减弱，天线的增益提高了3．80dB。
Bibliography:Guo Xiaojing, Zhao Xiaopeng, Liu Yahong, Zhu Weiren （Smart material laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi ＇an 710129, China）
high-directivity; microstrip antenna; zero-index metamaterial
We design, fabricate, and experimental demonstrate a high-directivity microstrip antenna based on planar net-shaped zero-index metamaterial. An averaging effect over the metamaterial structure yields an zero permittivity at 10.24 GHz, which results in a metamaterial with zero index of refraction. The experimental results indicated that, the directivity of the zero-index microstrip antenna improved greatly, the half-power beamwidths reduction of E plane and H plane are 56.67° and 26,60°, respectively. Moreover, the side radiation reduced while the forward radiation increased, and the gain of the antenna is enhanced by 3.80 dB.
11-2305/TN
ISSN:0258-7998
DOI:10.3969/j.issn.0258-7998.2011.06.037