幅相一致低杂散多通道上变频器设计  

Design of Multi-channel Up-converter with High Amplititute-phase Consistency and Low Spurious Signal

作　　者：苗利军[1] 张东[1] 孙宝平[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2009年第12期46-48,58,共4页Radio Engineering

摘　　要：介绍了一种幅相一致、低杂散多通道上变频器的电路组成及混频、滤波及增益控制等关键电路的设计。论述了杂散的产生及抑制,对影响幅度一致性和相位一致性的因素进行了分析,并提出了控制多路上变频器的幅度一致性、相位一致性的方法。该多通道上变频器的幅度一致性优于1dB,相位一致性优于6°,带内杂散优于-60dBc,带外杂散优于-45dBc。This paper introduces a up-converter circuit with high Amplitude-Phase consistency and low stray and the key design of mixing, filter and gain-control, analyzes the reason of stray appearance and its rejection, analyzes the factors that influence the amplitude- phase consistency and bring forward a method to control the amplitude-phase consistency of multi-channel up-converter. Its amplitude consistency is better than ldB, phase consistency better than 6 dB, stray in band better than - 60 dBc and out-of-band stray better than - 45 dBc.

关 键 词：上变频器 幅度一致性 相位一致性 杂散 

分 类 号：TN773.4[电子电信—电路与系统]