摘要
设计了一种带有2个陷波频段的超宽带天线。天线的缝隙和馈电枝节采用相反的梯形结构,以实现较好的阻抗匹配。通过在宽缝隙中增加2个线形枝节和1个"E"形结构,使得天线在3.0 GHz^3.9 GHz和5 GHz^6 GHz 2个频段内出现频率阻断。根据天线的阻抗曲线,给出等效谐振电路并对陷波产生的原理进行了分析。最后对天线的远场辐射特性进行分析和阐述,测试结果良好,达到了陷波超宽带天线频率阻断的效果。
A planar uhra-wideband antenna with dual band-notched characteristics is proposed. Using a broad trapeziform slot at the bottom of radiating patch and an inversed trapeziform shaped feeded metal stub, good impedance match can be achieved. Intro- ducing two linear shape and one E-shaped metal stubs in the broad slot, dual band-notched characteristics can be created within the frequency range between 3.0 GHz - 3.9 GHz and 5 GHz - 6 GHz. The equivalent electrocircuit can be drawn according to the impedance curve, analysis of the cause of band rejection. The farfield radiating characteristics is analized in the end. The measured results shows a well meet to the initial design.
出处
《现代雷达》
CSCD
北大核心
2011年第2期58-61,共4页
Modern Radar
关键词
超宽带天线
双陷波
阻抗曲线
全向性
ultra-wideband antenna
dual bands rejection
impedance curve
omnidirectional
