基于菲涅尔区修正结构的多波束自适应天线

A New Multibeam Adaptive Antenna Based on the Fresnel Zone Phase Correcting Antenna

菲涅尔区相位修正结构具有类似于二次曲面的聚焦特性和更好的偏轴扫描特性，将该结构与馈源阵列相组合，并通过用改进的ＬＭＳ算法对馈源阵列输出的自适应信号处理，实现了对来波方向的估计和数字波束形成，从而构成了一类新型的多波束自适应天线。计算机模拟的有关结果证实了其可行性。

The Fresnel Zone phase correcting Plate (FZP) has its focusing characteristics similar to that of the quadric surface, such as paraboloid etc., and with better paraxial scanning property. In this paper, the FZP is used to construct a multibeam antenna with a feeding array, and with an adaptive signal processing procedure applied to the array. An estimation to the direction of arrival and a digital beamforming are achieved. This is verified by the computer simulation results.