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罗姆航空发展中心、威斯汀豪斯和其他航天公司的研究人员正在研究如何把相位列阵雷达天线上的有源元件和光缆联接。嵌在飞机机壳上的先进机载雷达天线有1000～10000个有源辐射元件。每一元件必须用微波元件与同轴电缆连接。微波元件的成本占相位列阵系统的大部分。同轴电缆既笨又重,使机载或地面运动装置负载不希望承担的重量。光纤轻得多,更廉价,且能传输更多数据,因而是一种引人的替代物。如能研制出高调制速率的激光器和调制器,光缆就能用来连接相位列阵天线元。需要
Researchers at the Roma Air Development Center, Westinghouse and other space companies are studying how to interface active elements on phase-array radar antennas with fiber optic cables. The advanced airborne radar antenna embedded in the aircraft’s case has 1000 to 10,000 active radiating elements. Each component must be connected with a coaxial cable using a microwave component. The cost of microwave components account for most of the phase array system. Coaxial cable is stupid and heavy, so that the airborne or ground moving device does not want to bear the weight of the load. Fibers are much lighter, cheaper, and transmit more data, making them an attractive alternative. If you can develop a high modulation rate of lasers and modulators, optical cables can be used to connect phase array antenna elements. need