针对基于二元光栅演化的周期性闪耀光栅，限制了液晶相控阵所能实现的衍射角度数量以及分布，基于微波相控阵理论提出了一种基于非周期性闪耀光栅的液晶相控阵波控方法。通过衍射理论推导，证明周期性闪耀光栅是非周期闪耀光栅的特定形式。并仿真验证了基于非周期性闪耀光栅的方法能够极大地增加扫描角度数量，实现多于周期闪耀光栅10倍的可分辨角数量，使液晶相控阵阵列在不需要级联其它器件的前提下，实现视场范围内几乎所有可分辨角的光波束扫描，且不以衍射效率降低为代价。通过光束偏转实验，验证了基于非周期闪耀光栅进行液晶相控阵波控可实现均匀扫描，且可实现周期性闪耀光栅所不能实现的衍射角度。

Periodic blazed grating of binary grating limits the number and distribution of the diffraction angles realized by liquid crystal phased array (LCPA). Inspired by microwave radar phase arrays theory, a beam steering approach of liquid crystal phased array based on a nonperiodic blazed grating is proposed. Through the deduction of diffraction theory, it is verified that periodic blazed grating is a special case of nonperiodic blazed grating. Simulations are presented to testify that the beam steering approach based on nonperiodic blazed grating can obtain steering angles which are ten times as many as those produced by periodic blazed grating. Without combining with other devices, LCPA can realize continuous beam steering of almost all the resolvable spots over the field of view and will not decrease diffraction efficiency. In order to validate the proposed approach, beam steering experiment is performed with single LCPA. The results show that the beam steering approach based on nonperiodic blazed grating can obtain continous beam steering and steering angles which periodic blazed grating cannot.