有源相控阵接收系统的噪声测试  

Noise Temperature Measurements of Active Phased Array Receiving System

作　　者：顾墨琳[1] 林守远[1] 

机构地区：[1]南京电子技术研究所,南京210013

出　　处：《现代雷达》2004年第3期54-57,共4页Modern Radar

摘　　要：讨论有源相控阵中接收系统的噪声测试问题。在推广了IRE噪声系数定义的基础上 ,采用Y参数法可测得在特定条件下各通道接收组件、子阵组件或整个接收阵的有效输入噪声温度。讨论中可设定各通道接收组件的有效输入噪声温度和增益均不相同 ,并考虑了功率合成网络的损耗。The noise temperature measurements for the receiving modules, the sub-arrays and the whole active phased array are discussed in this paper. Based on the extension of IRE effective noise temperature definition and using the well-known ' Y -factor ' method, the effective noise temperature of the system or individual channels under certain prescribed conditions may be obtained. The effective input noise temperature (or gain) of the receiving modules may be different from each other in the discussion. The loss of the power combining networks, the unequal power combining, and the two level power combining networks are considered also.

关 键 词：有源相控阵雷达 接收系统 噪声测试 噪声温度 噪声系数 功率合成 

分 类 号：TN957[电子电信—信号与信息处理]