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3 mm波段烟幕插入损耗测量

Shu-sheng PENG,Gang-feng ZHAO,Jian-guang GUO,Xing-hui YIN,Zhi-cai XU

Nanjing Li Gong Daxue Xuebao/Journal of Nanjing University of Science and Technology（2006）

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Abstract
为了满足3 mm波段烟幕辐射特性和插入损耗特性测量的需要,研制了3 mm波段烟幕特性自动测量系统--3 mm辐射源和3 mm辐射计/接收机一体机.一体机是对Dicke型辐射计的改进,在保持毫米波辐射计接收机高频前端不变的前提下,分别为辐射特性测量和插入损耗特性测量设计了独立的被动通道和主动通道,并在窄带的插入损耗测量的主动通道增加了中频锁相环路.探讨了该系统的烟幕插入损耗特性测量方法,实验结果表明:该系统能满足3 mm波段烟幕特性自动化测量的要求.
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Key words
3 mm band,Insertion loss,Measurement method,Radiometers,Receivers,Smoke screen
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