集成微波光子射频前端技术

微波光子射频前端具有频率覆盖范围大、工作波段和瞬时带宽可灵活重构、抗电磁干扰等优势,在泛在无线通信、软件无线电、雷达和电子战系统中有着广阔的应用前景。为进一步减小系统的尺寸和功耗以满足实际应用的需求,构建基于光子集成芯片技术的微波光子射频前端微系统势在必行。文章分析了集成微波光子射频前端微系统目前在器件层面和系统集成层面面临的挑战,并从高精细、可重构的光滤波器设计、混合集成系统架构设计和系统频率漂移抑制方案三个方面重点介绍了作者所在课题组开展的关于混合集成可重构微波光子射频前端的研究现状。

Integrated Microwave Photonic RF Frontend Technologies

Microwave photonic radio-frequency (RF) frontends, exhibiting the advantages of large frequency coverage, reconfigurable operation frequency bands and instantaneous bandwidths, and immunity to electromagnetic interference, have shown great potential in wireless communication, software-defined radio, radar systems, and electronic warfare. To further balance the performance superiority with the requirements of miniaturized application scenarios on size, weight, and power consumption (SWaP), the implementation of integrated microwave photonic RF frontends has been considered as an upgrade path. In this article, the challenges of the demonstration of integrated microwave photonic RF frontends are briefly analyzed from the device design to the microsystem integration, and then the research of our group on the hybrid integrated reconfigurable microwave photonic RF frontend are presented from such three aspects:the design of reconfigurable narrowband integrated photonic filters, the architecture of hybrid integrated microsystems, and the method for suppressing the frequency drift.