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为解决圆极化微带天线阵馈电网络较为复杂、工程实现较为困难这一问题,提供一种适用于宽带全球局域网陆地移动终端的天线阵简易设计方法.采用微带线三维过渡段倾斜馈电,利用方形贴片切角实现圆极化工作,并采用叠层单元结构连续旋转组成天线阵,使得天线的阻抗带宽(VSWR≤2)和轴比带宽(AR≤3 dB)分别达到35%和20%.实测结果表明,天线在整个海事卫星工作频带内驻波比小于1.5,增益高于13 dB.实测结果与仿真结果具有良好的一致性.
In order to solve the problem that the circularly polarized microstrip antenna array feeding network is more complicated and the project is difficult to realize, an antenna array simple design method suitable for a broadband global land mobile terminal is provided. The microstrip line three- The circular polarizations are realized by using the square corner cut of the patch and the antenna array is rotated continuously by the laminated unit structure so that the impedance bandwidth (VSWR≤2) and axial ratio bandwidth (AR≤3 dB) of the antenna are respectively 35% And 20% respectively.The measured results show that the antenna has a VSWR of less than 1.5 and a gain higher than 13 dB over the entire maritime satellite working frequency band.The measured results are in good agreement with the simulation results.