基于CPWG馈电结构的D频段SIW缝隙天线研究  

Research on D-Band CPWG-Feed SIW Slot Antenna

作　　者：邢成浩 刘昊 祝大龙 马同礼 XING Chenghao;LIU Hao;ZHU Dalong;MA Tongli(Beijing Research Institute of Telemetry,Beijing 100076,China)

机构地区：[1]北京遥测技术研究所,北京100076

出　　处：《遥测遥控》2025年第2期137-142,共6页Journal of Telemetry,Tracking and Command

摘　　要：提出了一种工作在D频段的基片集成波导缝隙天线,信号从共面波导端口馈入,通过一段CPWG-SIW(Coplanar Waveguide-Substrate Integrated Waveguide,共面波导-基片集成波导)结构实现宽带低损耗的准TEM(横电磁)模和准TE10(横电10)模式转换,经过矩形窗耦合垂直过渡、传输和功率分配,最终在SIW(Substrate Integrated Waveguide,基片集成波导)缝隙天线阵列实现高增益辐射,这种结构可以实现天线辐射场与馈电端口的良好隔离。仿真结果显示,在120 GHz频点处实现了1×4阵列天线,主瓣宽度为24°(E面)和10°(H面),天线增益≥18.29 dBi,驻波比≤2.0,天线尺寸为18.73 mm×5.83 mm×0.55 mm。A D-band SIW slot antenna was proposed in this paper.The feeding network consists of a CPWG input,a CPWGSIW transmission with the wideband and low-loss characteristics from the quasi-TEM mode to quasi-TE10 mode and a rectangular slot with functions of vertical transition,transmission and power-dividing.High-gain radiation was achieved at the SIW slot antenna with good isolation between radiation field and the feeding network.As shown in the simulation results,the bandwidth of 1×4 antenna array achieved an E-plane beam-width of 24°and an H-plane beam-width of 10°at 120 GHz.The gain is more than 18.29 dBi and the VSWR is less than 2.0 with the size of 18.73 mm×5.83 mm×0.55 mm.

关 键 词：基片集成波导 缝隙天线 带地共面波导 D频段 

分 类 号：TN821.8[电子电信—信息与通信工程] TN828.4