摘要
针对无线通信系统对双频天线的应用需求,提出了一种新型双频平面天线。为了实现天线的双频特性,将2个不同的折叠线阶跃阻抗谐振器(SIR)分别放置在印刷平面单极子上下两侧。在天线近距近场加载设计原理的基础上,对该双频平面天线的匹配过程进行了简要介绍。对天线关键参数,应用三维电磁场仿真软件CST进行了仿真分析。设计的天线整体结构尺寸约为21 mm×39 mm,天线的双频工作为2.45,3.48 GHz,实测结果表明,该天线在工作频点处的S 11达到-14 dB以下,且具有良好的全向辐射和交叉极化特性。
For the application requirements of dual band antenna in wireless communication system,a novel dual-band planar antenna is proposed.To realize the dual-band characteristics of the antenna,two different kinds of folded-line SIR are put at the near upper and lower side of printed monopole antenna.Based on the design principle of closely spaced and near-field loading,the matching process of the dual band planar antenna is briefly introduced.The simulation verification and optimization are carried out by electromagnetic simulation software CST.The size of the antenna is around 21 mm×39 mm,and the operation frequency of the proposed antenna is 2.45,3.48 GHz.The measured results show that S 11 of the antenna is below-14 dB at the operation frequency,and it has good omni-directional radiation and cross polarization characteristics.
作者
彭丽
赵显超
PENG Li;ZHAO Xianchao(Unit 93160,PLA,Beijing 100071,China)
出处
《无线电工程》
北大核心
2021年第7期598-604,共7页
Radio Engineering
基金
国家部委基金资助项目。
