一种新型超宽带超外差接收前端的设计  

Design of A New Ultra-broadband Super Heterodyne Receiver Front-end

作　　者：李亮 张得才[1] 寇小兵[1] 陈坤[1] LI Liang;ZHANG De-cai;KOU Xiao-bing;CHEN Kun(The 723 Institute of CSIC,Yangzhou 225101,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,江苏扬州225101

出　　处：《舰船电子对抗》2019年第1期102-106,共5页Shipboard Electronic Countermeasure

摘　　要：介绍了一款0.38～40GHz的超宽带超外差接收前端的设计,提出了一种超外差新方案,通过共享本振信号实现了多个频段的统一,以及通过共享6～18GHz下变频通道实现了多个变频通道的整合;同时通过结合专用的多功能芯片设计及系统集成设计,实现了一种新型超宽带超外差接收前端的小型化设计。测试结果表明该前端在0.38～40GHz工作频带内增益波动、噪声系数、镜像抑制度、通道隔离度和杂散抑制度均满足指标要求。This paper introduces a design of 0.38~40 GHz ultra-broadband super heterodyne receiver front-end,puts forward a new scheme based on super heterodyne,which realizes the unification of multiple frequency bands by sharing the local oscillator signal,and the conformity of several variable frequency channels by sharing the 6~18 GHz down-conversion channel.At the meantime,the miniaturization design of a new ultra-broadband super heterodyne receiver front-end is realized by combining the special multifunction chip and system integration design.The test results show that the gain fluctuation,noise factor,mirror image rejection,channel isolation and stray rejection of the front-end in the 0.38~40 GHz working band completely meet the index requirements.

关 键 词：超宽带 变频通道 超外差 

分 类 号：TN851[电子电信—信息与通信工程]