Ku波段双极化宽带阵列天线

Dual-Polarized Wideband Array Antenna at Ku-Band

在Ku波段的微带阵列天线贴片单元基础上,进行了低旁瓣阵列的设计。设计了切比雪夫阵列、切比雪夫分布与等幅分布综合的16×16阵列,利用CST软件对这些阵列进行仿真。通过比较仿真结果,选择旁瓣电平较低的切比雪夫分布与等幅分布综合的16×16阵列进行加权处理。结果表明,权值为0.9、阵元间距为0.7λ的16×16切比雪夫分布与等幅分布综合阵列,旁瓣电平小于-26 dB,阵元电流相差较小,达到了性能指标要求。

Low side lobe level array is designed by microstrip array antenna patch unit. The Chebyshev current distribution array and Chebyshev current distribution synthesized with continuous current distribution array are designed. Both arraies are simulated by software CST. Through the comparation between the results of simula- tion Chebyshev current distribution synthesized with continuous current distribution array with lower side lobe level is chosen to weight and simulate. The simulation results show that when weight equal to 0.9 and array unit space d = 0. 7A, the side lobe level is less than - 26 dB and the current differences between each array unit are small. It satisfies the demand of performance index.