摘要
为了提高机载单极子天线的终端匹配性能,实现天线的小型化,设计了一种VHF频段顶加载与弯折面式的机载刀型天线。采用顶载技术与弯折线理论构建天线结构模型,并且运用遗传算法和数值优化等方法对天线电性能进行分析。仿真分析与实物测试结果表明,在105~265 MHz频段范围内满足S11≤10 dB,达到相对带宽86.5%,为工程设计提供了良好的理论依据。
A top-loaded antenna structure with meander surfaces in VHF band is designed,which can not only improve the termi- nal match performance of monopole airborne antenna,but also meet the miniaturization requirements.The structure of the antenna model is constructed by using the top-loaded technology and the meander line theory.And the electric performance of the antenna is analyzed by genetic algorithm and numerical optimization.The simulation and test results show that the antenna has a good radiation performance and is well matched with a 86.5% relative impedance bandwidth,with Sll Ⅲ- 10 dB, in the band of 105- 265 MHz.h can provide a correlative theoretical basis for the engineering design.
出处
《无线电工程》
2016年第12期51-53,57,共4页
Radio Engineering
基金
国家自然科学基金资助项目(61361005
61001020
61461016)
桂林电子科技大学研究生教育创新计划资助项目(YJCXS201526)
关键词
机载天线
顶加载
弯折线
宽带
airborne antenna
top-loaded
meander line
broadband
