【作者】 袁鑫； 丁礼俊； 静玉浩； 刘亚红；

【Author】 YUAN Xin;DING Lijun;JING Yuhao;LIU Yahong;School of Physical Science and Technology,Northwestern Polytechnical University;

【机构】 西北工业大学物理科学与技术学院；

【摘要】 手性超材料由于具有特殊的物理性质而引起了人们的广泛关注,其对LCP波和RCP波具有不同的响应。利用手性超材料的思想,设计了一种螺旋状缝隙漏波天线。本文主要是在螺旋缝隙天线内外分别包裹厚度为4.5mm和1.0 mm,介电常数为2.65的介质层,以此来对天线的辐射波束进行调节。与未包裹介质管的螺旋天线相比,在1 GHz的频带范围内,天线的扫描范围由15°增加到了30°,且增益保持在11～12 dB,这使得天线的频率扫描特性得以更好的发挥,从而得到了具有优良频率扫描特性和稳定增益值的螺旋带状缝隙波导天线。更多还原

【Abstract】 Chiral metamaterials have attracted wide attention due to their special physical properties,which have different responses to LCP and RCP waves.Based on the idea of chiral metamaterials,a spiral slot leaky wave antenna is designed.In this paper,the dielectric layer with the thickness of 4.5 mm and 1.0 mm,and the dielectric constant of 2.65 are respectively wrapped inside and outside the spiral slot antenna to adjust the radiation beam of the antenna.Compared with the spiral antenna with unwrapped dielectric tube,the scanning range of the antenna is increased from 15° to 30° in the frequency band range of 1 GHz,and the gain is 11～12 dB.The slot antenna with good excellent frequency scanning characteristics and high gain is obtained.更多还原