一种频率可重构短波宽带鞭状天线设计  

Design of frequency reconfigurable shortwave broadband whip antenna

作　　者：王衡峰 柳超[1] 吴华宁[1] WANG Heng-feng;LIU Chao;WU Hua-ning(College of Electronic Engineering,Naval Univ.of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学电子工程学院,武汉430033

出　　处：《海军工程大学学报》2019年第1期41-45,共5页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(61501195)

摘　　要：针对目前10 m短波鞭状天线存在的低频段增益和效率低的问题,基于入侵性野草(invasive weed optimization,IWO)算法和分波段加载匹配网络重构技术,设计了一款分波段短波宽带鞭状天线;然后,采用IWO算法对每个分波段内天线的加载网络和匹配网络分别进行了优化,设置了不同标称阻抗、传输线变压器变比以及下加载点的位置;最后,进行了仿真分析,结果表明:所提方法使低频段天线增益最多提高了6 d B,有效解决了该天线低频段的增益缺陷。The research is expanded from the problems of small gain and low efficiency at low frequency in 10 m high frequency(HF)broadband whip antenna.To begin with,a sub-band HF broadband whip antenna is designed based on the sub-band loading,matching and reconfiguration technology,as well as invasive weed optimization(IWO)algorithm.Then,the loading and matching network of the antenna in each sub-band is optimized through the IWO algorithm.As it turns out,by changing the nominal impedance,the ratio of transmission-line transformer and the location of lower loading point,the antenna gain at low-frequency is increased by 6 dB,effectively solving the gain defect in low frequency band of the antenna.

关 键 词：鞭状天线 短波 宽带 分波段 加载 匹配网络 重构技术 

分 类 号：TN822.3[电子电信—信息与通信工程]