摘要
本文基于基片集成波导(SIW)结构设计了一种厚度约2.5%λ的低剖面、极化可重构宽带SIW天线。通过在SIW腔体上开环形槽激励出两个辐射谐振频点,并通过对SIW腔中所设计的过孔位置调节,实现了对两个谐振频率点的调控,扩展了低剖面天线的工作带宽。另外,通过对安装在SIW天线表面射频二极管的开关控制,可以实现对该天线两个辐射谐振频点控制,从而获得该天线的左右圆极化重构。仿真和测试结果表明,厚度仅为2.5%λ的低剖面SIW天线,其相对工作带宽可达6.4%;在5~5.3 GHz频率范围内天线增益大于5 dBi,其中在5.17±0.035 GHz频率范围内可实现对该天线左右圆极化的重构,且天线极化隔离度优于15 dB。
This paper presents the design of a low-profile,polarization-reconfigurable broadband substrate integrated waveguide(SIW)antenna based on the SIW structure,with a thickness of approximately 2.5%λ.By introducing a circular slot on the SIW cavity,two radiation resonant frequencies are excited.The adjustment of the via positions within the SIW cavity allows for the control of these two resonant frequencies,thereby extending the operating bandwidth of the low-profile antenna.Additionally,by controlling the RF diodes mounted on the surface of the SIW antenna,the two radiation resonant frequencies can be manipulated,enabling the reconfiguration of the antenna′s left-hand and right-hand circular polarizations.Simulation and experimental results demonstrate that the low-profile SIW antenna,with a thickness of only 2.5%λ,achieves a relative operating bandwidth of 6.4%.Within the frequency range of 5~5.3 GHz,the antenna gain exceeds 5 dBi.Furthermore,the antenna can achieve reconfiguration between left-hand and right-hand circular polarizations within the frequency range of 5.17±0.035 GHz,with a polarization isolation better than 15 dB.
作者
王潮涌
葛俊祥
汪洁
刘恒超
周嘉程
Wang Chaoyong;Ge Junxiang;Wang Jie;Liu Hengchao;Zhou Jiacheng(Nanjing University of Information Science and Technology,School of Electronic and Information Engineering,Nanjing 210044,China;Nanjing Vocational University of Industry Technology,School of Electronic and Information Engineering,Nanjing 210023,China)
出处
《电子测量技术》
北大核心
2025年第19期18-24,共7页
Electronic Measurement Technology
