一种用于电视无源双基地雷达系统中的射频接收系统  

A RF Receiver System Used in Televisionbased Passive Bistatic Radar

作　　者：张珊珊[1] 费元春[1] 

机构地区：[1]北京理工大学信息科学技术学院,北京100081

出　　处：《现代电子技术》2003年第5期90-91,94,共3页Modern Electronics Technique

摘　　要：主要介绍了一种低噪声大动态接收机的设计。该机用于电视无源双基地雷达系统中 ,接收参考信号直达波。该接收机采用了自行设计的低噪声射频放大器 ,降低了接收机的整机噪声系数 ,使用了 AGC(自动增益控制 )结构 ,大大提高了接收信号的范围。因此采用低噪声大动态接收机可以提高接收信号的灵敏度和信噪比 。Describe a receiver whice performs low noise amplifying,radio frequnency filter, frequency down conversion,signal amplifying and automatic gain controlling The receiver is used in the televisionbased passive bistatic radar It improve parameters of received signals notably The noise coefficient of the receiver system is decreased because a low noise RF amplifier designed by ourself and other monolithic microwave integrated circuit are used Its automatic gain controlling module expand the power range of receivedsignal In a word, it improve the signal process of the televisionbased passive bistatic radar system

关 键 词：电视无源双基地雷达 接收机 噪声系数 AGC 自动增益控制 

分 类 号：TN957.5[电子电信—信号与信息处理]