宽带圆极化阵列天线设计

Broadband circularly polarized antenna array design

提出了一种应用于S波段小型宽带圆极化微带贴片天线阵列。单点背馈式方形贴片印刷于Duroid5880介质板上,在贴片上加载两个相邻矩形缝隙,一方面实现圆极化辐射,另一方面拓展天线单元的阻抗带宽。利用该单元组阵,通过采用连续相位旋转法馈电天线单元拓展天线阵列的轴比带宽,仿真结果表明,线阵和面阵的阻抗和轴比带宽均达到10%以上。

Put forward a kind of applied in s-band small broadband circularly polarized microstrip patch antenna array.Single point back feedback square tiles printed in Duroid5880 medium plate,on the patch loading two adjacent rectangular aperture,on the one hand to realize circular polarized radiation,on the other hand,expand the impedance bandwidth of the antenna element.Using the unit group,through the adoption of continuous phase rotation method feed antenna unit development axis than the bandwidth of the antenna array,the simulation results show that the impedance of the line array and array and the axial ratio bandwidth are above 10%.