设计了一种收发一体化的光控相控阵天线系统.该系统中,采用基于微光学元件堆栈集成技术实现真时延的产生.天线系统通过光域内的延迟控制实现微波射频域的波束控制.对系统接收模式状态进行实验验证,±10.6°、±30.8°波束指向的暗室实验结果表明,在2~6GHz宽带微波信号下,±10.6°指向角的最大指向角误差为3.1°,±30.8°指向角的最大指向角误差为1.2°.相控阵天线系统在2GHz频点动态范围约为71 dB左右.该光控相控阵系统能够实现与宽带射频信号频率无关的波束指向及一维平面内方位向运动物体的跟踪.

A transceiver integrated optically controlled phase array antenna system was introduced. The true time delay of the system was generated by stack integration of micro-optical components. The antenna system accomplishes the control of microwave signal by virtue of controlling the time delay in optical domain. Experimental verification of the system in receive mode is conducted. Experimental results on steering angle of ±10.6°、±30.8°demonstrate that maximum error of steering angle at ±10.6°is 3.1°and that at ±30.8°is 1.2°under 2-6 GHz broadband microwave signal. The dynamic range of the optically controlled phase array antenna at 2 GHz microwave frequency is about 71 dB. The system can realize radio frequency independent broadband beam steering and the tracking of moving target in azimuth angle direction in one-dimensional plane.