W波段SIW高增益宽带沙漏形缝隙阵列天线设计  

Design of a W-Band SIW High-Gain,Broadband Hourglass-Shaped Slot Array Antenna

作　　者：马家琪 李春树[1] 贾兴宁 来翔 Ma Jiaqi;Li Chunshu;Jia Xingning;Lai Xiang(School of Electronics and Electrical Engineering,Ningxia University,Yinchuan 750021,Ningxia,China)

机构地区：[1]宁夏大学电子与电气工程学院,宁夏银川750021

出　　处：《激光与光电子学进展》2024年第23期357-364,共8页Laser & Optoelectronics Progress

基　　金：宁夏大学研究生创新项目(CXXM202402);宁夏自然科学基金(2022AAC03116)。

摘　　要：针对高速发展的毫米波雷达对宽带、高增益天线设计提出的需求及挑战,提出一款改进型沙漏形缝隙结构,进而设计出W波段高增益宽带基片集成波导(SIW)多谐振沙漏形缝隙阵列天线,并利用遗传算法优化参数以平衡阻抗带宽和辐射效率。仿真结果显示,该SIW缝隙面阵可激励出多个谐振频率,实现带宽拓展,使得-10 dB阻抗带宽达到了76.32~100.39 GHz,相对带宽为27.24%,覆盖W波段68.8%。且辐射效率为93%,最高增益达到了19.6 dBi,天线尺寸小,增益及效率提升明显。谐振频点处电压驻波比(VSWR)小于1.2,回波损耗S11小于-20 dB。该天线频带宽、剖面低、增益高且易于高度集成化,可广泛应用于无线通信及毫米波领域。To address the demands and challenges of rapidly advancing millimeter-wave radar technology for broadband and high-gain antenna design,we propose a novel hourglass-shaped slot structure.We develope a W-band high-gain broadband substrate integrated waveguide(SIW)antenna with a multiresonant hourglass-shaped slot array,which is optimized using genetic algorithms to balance the impedance bandwidth and radiation efficiency.The simulation results indicate that the SIW slot array excited multiple resonant frequencies,leading to bandwidth expansion.The antenna achieves a−10 dB impedance bandwidth from 76.32 to−100.39 GHz,with a relative bandwidth of 27.24%and coverage of 68.8%of the W-band.In addition,the radiation efficiency is 93%,with a maximum gain of 19.6 dBi.Despite its small size,the antenna offers considerable improvements in the gain and efficiency.The voltage standing wave ratio at the resonant frequency point is less than 1.2,and the return loss is below−20 dB.This antenna features a widefrequency band,low profile,high gain,and ease of integration,making it suitable for wireless communication and millimeter-wave applications.

关 键 词：W波段 宽带天线 高增益 基片集成波导 沙漏形缝隙 毫米波雷达 

分 类 号：TN822.4[电子电信—信息与通信工程] TN823.24