【作者】 雷辰露； 葛飞宇； 李顺礼； 赵洪新； 殷晓星；

【Author】 LEI Chen-lu;GE Fei-yu;LI Shun-li;ZHAO Hong-xin;YIN Xiao-xing;National Key Laboratory of Millimeter Wave, Southeast University;

【机构】 东南大学毫米波全国重点实验室；

【摘要】 本文探讨了平面端射圆极化天线的设计,提出了一款采用基片集成波导(SIW)技术和对跖渐变槽天线(ALTSA)的平面喇叭天线,通过巧妙的功率分配和反射波相干抵消,实现了较高增益的圆极化辐射。设计中特别关注了垂直与水平极化分量的相位和幅度匹配,以确保低轴比和高增益。CST软件的仿真结果表明,在18.79-19.90GHz频段(相对带宽5.7%)内,天线的反射系数低于-10 dB,轴比小于3 dB,增益超过7.8 dBi。该天线设计适用于卫星导航、中长距离通信和物联网等应用场景,在高性能通信系统中具有应用潜力。更多还原

【Abstract】 The design of planar endfire circularly polarized antenna is discussed in this paper. A planar horn antenna using substrate integrated waveguide(SIW) technology and antipodal tapered tapered slot antenna(ALTSA)is proposed. Through the smart power allocation and the coherent cancellation of the reflected waves, the circularpolarized radiation with high gain is achieved. Special attention has been paid to matching the phase and amplitude of the vertical versus horizontal polarization components in the design to ensure low axial ratio and high gain. CST simulation results show that the reflection coefficient is less than-10 dB, the axial ratio is less than 3 dB, and the gain is more than 7.8 dBi in the 18.79-19.90 GHz band(relative bandwidth 5.7%). The proposed antenna design is suitable for application scenarios such as satellite navigation, medium and long distance communication and Internet of things, and has potential application in high-performance communication systems.更多还原