高频雷达模拟前端与天线的匹配问题研究  

The Matching Problem of Analog Front End with the Antenna for HF Radar

作　　者：赵娟[1] 李东明[1] 曾旭明[2] 李亚敏[2] 

机构地区：[1]中国地质大学信息技术教学实验中心 [2]中国地质大学机械与电子信息学院

出　　处：《电子技术（上海）》2014年第11期18-21,共4页Electronic Technology

基　　金：中央高校基本业务费项目(CUGL130264)

摘　　要：针对模拟前端设计过程中,模拟前端与天线的匹配问题,文章分析了天线的各性能参数对于增益可调模拟前端的噪声系数、灵敏度、动态范围等技术指标的影响,得出了模拟前端的噪声系数和输出三阶截点的具体表达式,为模拟前端的设计提供了理论依据。Aiming at the matching issue between analog front end and antenna in the design process of analog front end, this paper analyzes the influence of various performance parameters of antenna on technical indicators of gain adjustable analog front end, such as noise figure, sensitivity, and dynamic range. The expressions of the noise figure of analog front end and the third-order intercept point of output has been obtained, which provide the theoretical basis for the design of analog front end.

关 键 词：模拟前端 天线 A/D转换器 匹配 

分 类 号：TN929.533[电子电信—通信与信息系统]