一种Ku波段宽带微带天线的设计  

Design of a wideband microstrip antenna at Ku-band

作　　者：王鹏[1,2] 李民权[2] 付灿[2] 金秀梅[2] 

机构地区：[1]安庆师范学院物理与电气工程学院,安徽安庆246011 [2]安徽大学计算智能与信号处理教育部重点实验室,安徽合肥230039

出　　处：《合肥工业大学学报（自然科学版）》2012年第1期62-65,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金重点资助项目(60931002);安徽高校省级自然科学研究基金重点资助项目(KJ2011A007);安庆师范学院青年科研基金资助项目(KJ201101)

摘　　要：文章给出一种新型结构的Ku波段宽频带微带天线的设计方法。在接地板上开H型缝隙进行耦合馈电,并在辐射贴片表面开矩形缝隙以扩展带宽,在天线的底面加反射板以提高增益、改善天线方向图的前后比性能。用高频仿真软件HFSS进行仿真优化,结果表明该结构天线具有良好的宽频谐振特性,其回波损耗小于-10dB,阻抗相对带宽高达39.8%,交叉极化电平小于-28dB,前后比优于19dB。A novel design approach of the wideband microstrip patch antenna at Ku-band is presented in this paper.The coupling feed is made by H-shaped apertures in the ground plane.Two narrow slots are etched on the radiating patch to expand bandwidth.The reflector in the bottom of the antenna is used to enhance the gain and improve the front-to-back ratio.The antenna is analyzed and optimized by the high frequency simulation software HFSS.The simulation results show that this structure of antenna can effectively improve the wideband resonance of the microstrip antenna.The antenna can achieve 39.8 % impedance bandwidth with a return loss less than-10 dB and a cross polarization level less than-28 dB.The front-to-back ratio of the antenna radiation pattern is better than 19 dB.

关 键 词：KU波段 宽频带 微带天线 耦合馈电 

分 类 号：TN823[电子电信—信息与通信工程]