Integrated optical true time delay phased array antenna systems

The integrated optical true time delay phased array antenna system has the advantages of high bandwidth, small size, low loss and strong anti-interference capability, etc. The high integration of the optically controlled phased array antenna system is a necessary trend for the future development of the phased array, and it is also a major focus and difficulty in the current research of integrated microwave photonics. This paper firstly introduces the basic principle and development history of optical true time delay phased array antenna system based on microwave photonics, and briefly introduces the main implementation methods and integration platform of optical true time delay. Then, the application and development prospect of optical true time delay technology in beam control of phased array antenna system are mainly presented. Finally, according to the current research progress, the possible research directions of integrated optically controlled phased array antenna systems in the future are proposed.