摘要
提出了一种新型复合左右手结构微带漏波天线,利用超材料的左手特性消除开路阻带效应、曲折线单元在纵轴上的垂直偏移提高天线增益以及调节群时延法提高天线的扫描率。采用全波分析法分析了天线的阻抗带宽和辐射特性,实测结果表明在9.7~11.45 GHz工作频段内,天线的回波损耗小于-10 dB,当频率从9.7 GHz变化到11.1 GHz时,主波束可以从-50°到+31°进行电子扫描且增益均大于9.8 dB。该天线具有高增益、高扫描率和小型化的优点,可以应用于轻质机载频扫雷达系统中。
A new composite right/left-handed transmission line structure microstrip leaky antenna was proposed.The openstop band effect can be eliminated by using the metamaterial left-handed characteristics,while the antenna gain can be improved by shifting the serpentine unit vertically in the longitudinal axis.And the antenna scanning rate can be increased by adjusting the group time delay method.Full wave analysis method was employed to calculate the impedance bandwidth and radiation characteristics of the antenna.The test results demonstrate that S_(11) is less than-10 dB within 9.7-11.45 GHz bands,and the main beam can be electronically scanned from-50°to+31°within 9.7-11.1 GHz with the gain higher than 9.8 dB.That antenna has the advantages of high gain,high scan rate and miniaturization,which can be applied in light airborne frequency-scan radar.
作者
马民政
王宏建
刘明月
MA Minzheng;WANG Hongjian;LIU Mingyue(CAS Key Laboratory of Microwave Remote Sensing,National Space Science Center,Beijing 100190,China;University of Chinese Academy of Science,Beijing 100049,China)
出处
《电子元件与材料》
CAS
CSCD
北大核心
2022年第6期635-640,共6页
Electronic Components And Materials
