摘要
文章提出了一种适用于基站天线的新型双频双极化微带偶极子天线单元,采用改进的微带偶极子、附加耦合贴片以及对称平衡馈电的结构形式。用商业软件Ansoft对天线的电特性进行仿真计算,并制作了实验模型,测试结果和仿真结果吻合良好。天线在880MHz^960MHz的GSM(全球移动通信系统)频段和1 710MHz^1 880MHz的DCS(数字蜂窝系统)频段上的反射损耗均大于10dB,且在两个频段上极化互相垂直的两个端口的隔离度均大于31dB。
A novel dual - band dual - polarized microstrip antenna element suitable for applications in a base station antenna is presented. The antenna uses a structure of improved microstrip dipole, appended coupled patch, and symmetrical balance feed. The parameters of the antenna are calculated by Ansoft simu- lation. The experimental prototype is also mode. The measured results are in good agreement with the calculated results. The bandwidth for Return loss 〉 10 dB of the element covers both the 880 -960MHz GSM （ Global System for Mobile Communication） band and the 1710 - 1880MHz DCS （ Digital Cellular System） frequency band. The measured isolation between the ports corresponding to the two orthogonal polarizations is greater than 31dB in both bands.
出处
《空间电子技术》
2006年第B11期92-95,共4页
Space Electronic Technology
关键词
基站天线
双频双极化天线
微带天线
偶极子
Base station antenna, Dual- band dual -polarized antenna, microstrip dipole
