基于皮亚诺分形结构的微带阵列天线设计  

Design of microstrip array antenna based on Peano fractal structure

作　　者：张泽奎[1] 陈星[1] 

机构地区：[1]四川大学电子信息学院,四川成都610064

出　　处：《现代电子技术》2015年第15期74-76,79,共4页Modern Electronics Technique

摘　　要：为了适应现代无线通信对高增益宽频带天线的要求,改善微带天线增益低、带宽窄的缺陷,基于皮亚诺分形结构,设计研究一款工作在X波段的高增益、宽频带微带阵列天线。该天线由64个分形辐射单元组成辐射阵列来获得较高的增益,同时增加了寄生层形成F-P谐振腔,有效地提高了天线的带宽。仿真和测试结果表明,在10 GHz处天线的增益为24.1 d Bi,小于-10 d B的相对阻抗带宽达到了12.6%,同时天线的口径效率为89.4%。相对于传统的矩形结构,减小了天线的尺寸,实现了天线的小型化。To adapt to the requirements of modern wireless communication to high?gain broadband antenna,and improve the defects of low gain and narrow bandwidth of microstrip antenna,a microstrip array antenna with high?gain broadband works at x?band is studied based on Peano fractal structure. This antenna consists of 8 × 8 fractal radiation array to acquire the higher gain. The parasitism layer is added to form F?P resonant cavity,which can improve antenna bandwidth efficiently. Simulation and test results show that the antenna gain is 24.1 dBi when antenna works at 10 GHz,the relative impedance bandwidth can reach 12.6% when |S11|< -10 dB,and the caliber efficiency can reach 89.4%. Compared with traditional rectangle structure, the proposed fractal array can reduce antenna dimension,and realize antenna miniaturization.

关 键 词：皮亚诺分形 高增益 宽频带 小型化天线 

分 类 号：TN823-34[电子电信—信息与通信工程]