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近年来,人们在各种毫米波与微波应用中采用光学技术与电子光学装置的兴趣正日益增加。最引人注目的是在通讯、监视和成像中新一代的机载与太空站相控阵天线系统的应用。由于要求波束快速改变形状与扫描,从而导致提出了对新的波束形成方案的研究,而光学技术将成为实现这些要求的一条可能途径。工作在毫米波频率(20千兆赫以上)的新一代天线系统,是由独立分布在空间的固态收发模件构成,每个可控的有源收发单元将采用砷化镓单片微波集成电路制造。为了弥补单片
In recent years, interest in using optical technologies and electro-optical devices in various millimeter-wave and microwave applications is on the rise. The most notable is the application of a new generation of airborne and space station phased array antenna systems in communications, surveillance and imaging. Due to the requirement to quickly change the shape and the scanning of the beam, a new beamforming scheme has been proposed and optics technology will be a possible way to fulfill these requirements. A new generation of antenna systems operating at millimeter-wave frequencies (above 20 gigahertz) consists of solid-state transceiver modules distributed in space independently. Each controllable active transceiver unit will be fabricated using a GaAs monolithic microwave integrated circuit . To make up for the monolithic