用于整流天线的口径耦合圆极化微带天线的设计与实验  

Design and Experiment of Aperture-coupled Circularly Polarized Microstrip Antenna Used for Rectifying Antenna

作　　者：蔡鹏[1] 杨雪霞[1] 徐得名[2] 

机构地区：[1]上海大学通信与信息工程学院,上海200072 [2]东南大学毫米波国家重点实验室,南京210018

出　　处：《微波学报》2005年第5期34-36,50,共4页Journal of Microwaves

基　　金：国家自然科学基金(60171007);上海市重点学科建设项目(2001-44)

摘　　要：提出了一种用于整流天线的新型圆极化微带天线形式,此天线采用单端口径耦合馈电,易与整流电路集成和匹配。利用电磁场仿真软件分析了天线参数对天线性能的影响,设计并加工了一个圆极化天线单元。设计值和实验值较吻合,实验结果表明该天线在10.25GHz具有良好的圆极化特性:在最大方向上圆极化轴比为0.3dB,3dB圆极化带宽达到160MHz,驻波比小于2的带宽达到800MHz。A novel aperture-coupled circularly polarized microstrip antenna is proposed, which is used in rectenna system. The aperture-coupled single-feed antenna could be integrated and matched to the circuit of rectenna easily. An electromagnetic simulator is applied to analyze the circularly polarized microstrip antenna. An element has been designed and manufactured. The measured results are in good agreement with the simulated results. The antenna has good circular characters at 10.25GHz. The experimental results show that the axial ratio is 0.3dB at the centre frequency, the 3dB bandwidth reaches 160MHz, and the bandwidth of VSWR below 2 reaches 800MHz.

关 键 词：整流天线 圆极化 口径耦合 微带天线 圆极化轴比 实验值 设计值 800MHz 电路集成 天线性能 

分 类 号：TN822[电子电信—信息与通信工程]