K频段宽带小步进下变频单机设计与实现  

Design and Implementation of Broadband Small Step Down Converter in K-Band

作　　者：金山 李浩光 JIN Shan;LI Haoguang(The 38th Research Institute of CETC,Co.,Ltd.,Hefei 230088,China)

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《现代信息科技》2024年第19期1-6,共6页Modern Information Technology

摘　　要：为满足卫星通信系统对工作频带宽带化的需求,文章设计了一款宽带小步进下变频单机,其功能是将K频段(18~22 GHz)下变频至中频(1.2 GHz)。通过对关键指标的合理设计和优化,实现了1 kHz步进变频、瞬时带宽500 MHz以上、输出杂散低于-60 dBc的设计要求。测试结果表明,主要设计指标均优于系统指标要求。In order to meet the requirements of wide band in satellite communication system,this paper designs a broadband small step down converter,which has the function to down convert K-band(18~22 GHz)to IF(1.2 GHz).By rational design and optimization of key indexes,the design requirements of 1 kHz step frequency conversion,instantaneous bandwidth over 500 MHz and output spurious less than-60 dBc are realized.The testing results show that the main design indexes are better than the required system indexes.

关 键 词：下变频单机 宽带 小步进 

分 类 号：TN773[电子电信—电路与系统] TN927.2