【摘要】 混合使用了两种形式微带贴片单元在Ku波段实现了反射阵列天线,一种形式为不同大小贴片,另外一种形式为带不同长度延迟线的贴片。通过使用两种形式的贴片,优化了贴片单元的反射方向图,使其最大反射方向始终朝向阵列最大辐射方向,从而保证了阵列的效率。仿真与实测结果表明,所设计的口径约为13.5波长的反射阵列天线在5.5%的带宽内,实现了效率大于48%的设计。更多还原

【Abstract】 Two kinds of microstrip patch elements are employed in a Ka band microstrip reflectarray,one kind of elements are patches with different sizes and the other are patches with delay lines of different length.Through incorporating of two kinds of elements,reflect pattern of the element is optimized;and the maximum reflect direction of the element is always aligning to the maximum radiation direction of the array,which is benefit to ensure efficiency of the array.Simulation and experimental results show that,to a designed reflectarray antenna with aperture of 13.5 wavelength,its efficiency within 5.5% relative bandwidth is more than 48%.更多还原