In order to realize multi-function, the radar has wide instantaneous bandwidth and working bandwidth. Unfortunately, the traditional phased array radar antenna by microwave phase shifter in the way of phasing. This paper presents a kind of optical beamforming network based on cascaded micro-ring resonator. The simulation results show that the proposed antenna system can be more effectively satisfied with requirement of wideband and wide-angle scanning of phased array radar.
In order to realize multi-function, the radar has wide instantaneous bandwidth and working bandwidth. Unfortunately, the traditional phased array radar antenna by microwave phase shifter in the way of phasing. With the increasing demands of radar network performance in terms of bandwidth, distance and synchronization accuracy of information transmission links, microwave photonic radar network is gaining great attention from researchers. This paper analyzes key technologies in microwave photonic optical beamforming networks, reviews the recent advancement and discusses its possible research directions in the future.
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