中国舰船研究2025，Vol.20Issue(2)：350-356,7.DOI:10.19693/j.issn.1673-3185.03530
寄生单元加载的高增益可重构对称扇形贴片天线
High gain reconfigurable symmetrical sector patch antenna loaded with parasitic elements
摘要
Abstract
[Objectives]To meet the demand for multifunctional antennas in shipborne communication sys-tems,this paper proposes a novel high gain four-beam reconfigurable patch antenna based on the Yagi an-tenna.[Methods]The proposed antenna is composed of four symmetrical sector elements,with four PIN diodes loaded between the central patch and the sector components.These PIN diodes are used to control the radiation pattern by switching their on/off states,allowing the antenna to achieve four distinct directional pat-terns.Additionally,arc-shaped parasitic units are incorporated as reflectors or directors to enhance the antenna's gain and suppress sidelobes.The antenna is fabricated on a single-layer PTFE substrate with a dielec-tric constant of 2.2 and a loss tangent of 0.001,with overall dimensions of 80 mm×80 mm×4 mm.The design process involved optimizing various parameters,such as the radius of the sector patches(R1)and the spacing between the parasitic units and the sector patches(D1),to achieve the desired performance.The an-tenna's performance was evaluated through both simulation and experimental testing,with detailed analysis of its radiation patterns,gain,and impedance characteristics.[Results]Experimental results demonstrate that the antenna can achieve beam pointing at four specific azimuth angles(45°,135°,225°,and 315°)across four operating modes.Within the frequency range of 5.47 to 6.05 GHz,the antenna exhibits a high average gain of 7.46 dBi,with a measured impedance bandwidth of 10.07%.The measured gain is consistent across all four modes,with a maximum gain of 8.68 dBi observed within the operating band.The introduction of parasitic elements significantly enhances the antenna's directional radiation pattern,reducing sidelobes and improving gain.The optimized antenna demonstrates excellent impedance matching and radiation characteristics,with the measured results closely matching the simulated performance.[Conclusions]The proposed antenna has the advantages of high gain,low profile and simple control.Its radiation direction can be dynamically adjusted ac-cording to the communication needs of ships in order to reduce signal interference and improve communica-tion quality.关键词
贴片天线/天线方向图/方向图可重构/高增益/PIN二极管Key words
patch antenna/directional patterns(antenna)/pattern reconfigurable/high gain/PIN diodes分类
交通工程引用本文复制引用
黄元芯,卞立安,李高升,李延秀,陈冉昊,王琰..寄生单元加载的高增益可重构对称扇形贴片天线[J].中国舰船研究,2025,20(2):350-356,7.基金项目
装备预先研究领域基金资助项目(61402090118) （61402090118）
