【作者】 陈娟； 张安学；

【Author】 Chen Juan;Zhang Anxue;School of Electronic and Information Engineering,Xi’an Jiaotong University;

【机构】 西安交通大学电子与信息工程学院；

【摘要】 本文分析了一款基于超材料的高增益圆极化天线。超材料由两块刻有金属谐振环的介质基板构成。将超材料作为半波天线的反射面,调整半波天线与反射面的距离,可得到圆极化辐射特性。该天线的阻抗带宽(S11 <-10dB)为12%,轴比带宽(AR <3)为7%,天线增益大于9dB。更多还原

【Abstract】 A high gain circularly polarized antenna based on metamaterials has been presented in this paper. Metamaterials is composed of two pieces of substrates coated on one side with split ring resonator（SRRs）. Using the metamaterials as the reflection plane of a half-wave antenna,and adjusting the distance between the antenna and the reflection plane, it obtains a circularly polarized radiation. The impedance bandwidth(S₁₁<-10 d B)and axial ratio bandwidth（ AR <3）of the antenna are 12% and 7%,respectively,and its gain exceeds 9 d B.更多还原