摘要
设计了一种小型化超低轮廓多臂折叠天线，通过在天线臂之间引入集总元件加载并使用一个简单的高通匹配网络，实现了30～115MHz频带内驻波比〈3的宽带特性，天线高度仅0．4m，为其最大波长的4％。仿真结果表明：此天线频率低端辐射效率达13％，高端辐射效率达60％。通过与单极子天线的增益对比，验证了仿真结果可靠性。
A compact low profile multiple-arm folded wire antenna is presented. Broad bandwidth covering 30-115 MHz （VSWR〈3） can be achieved by means of lumped elements loading between arms and a simple high-pass matching network. The proposed antenna has a low profile of only 0.4m （4% of the wavelength at 30 MHz）. Simulated results show that the radiation efficiency is larger than 13% in lower band and 60% in its upper band. The simulated radiation characteristics of the antenna are validated by comparing the radiation gain of the proposed antenna with that of conventional monopoles.
出处
《电波科学学报》
EI
CSCD
北大核心
2009年第1期50-54,共5页
Chinese Journal of Radio Science
基金
国家自然科学基金资助项目(No.60571056
No.U0635004)
广东省自然科学基金重点项目07118061)
关键词
电小天线
宽带天线
加载天线
多臂天线
compact antenna
wideband antenna
loaded antenna
multiple-- arm antenna
