摘要
利用EBG结构改善平面微带天线的性能已得到广泛研究,同时在天线研究领域,圆柱共形微带天线由于其低剖面、易于共形,重量轻等特性而在航空航天及移动通信等众多领域得到广泛应用,因此,对高阻表面EBG结构在圆柱共形微带天线中的应用问题进行了着重研究。通过建立模型数值仿真了EBG结构对天线谐振频率、方向图的影响规律及有EBG结构时曲率对天线性能影响。结果表明,在天线周围加载EBG结构后,天线谐振频率升高,方向图得到显著改善,前向增益提高,后瓣减小,3 dB波束宽度变窄。比较研究发现,EBG结构减小了曲率对圆柱共形微带天线增益的影响。
Application of the high impedance surface EBG structures for cylindrical eonformal mierostrip antenna is studied. Through modeling and numerical simulation, the effects of EBG structures on antenna resonance frequency and pattern as well as effect of curvature on antenna performance with EBG structures are obtained. The results demonstrate that the resonance frequency of antenna shifts higher frequency, the antenna pattern is improved obviously, the forward gain increases, the back lobe decrease ,3 dB beam width gets narrower. The comparison research shows that the effect of curvature on cylindrical eonformal microstrip antenna gain is decreased remarkably after EBG structures are applied to antenna.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2009年第1期79-82,共4页
Journal of Air Force Engineering University(Natural Science Edition)
基金
国家自然科学基金资助项目(60671001)
陕西省自然科学基础研究计划资助项目(2005F21)
西安市工业攻关项目(GG06020)
空军工程大学电讯工程学院博士创新基金资助项目
关键词
电磁带隙
圆柱共形天线
谐振频率
方向图
曲率
electromagnetic band - gap
cylindrical confonnal microstrip antenna
resonance frequency
antenna pattern
curvature
