一种宽带Ka频段上变频模块的设计与实现  

Design and Implementation of a Ka-band Up-converter Module

作　　者：刘伯文 梁剑锋 崔平[1] LIU Bowen;LIANG Jianfeng;CUI Ping(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

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》2019年第1期72-75,共4页Radio Engineering

摘　　要：为了满足系统对工作频段宽带化的需求,设计了一种宽带Ka频段上变频模块,其功能是将C频段信号(2.0～4.0 GHz)上变频到Ka频段信号(25.0～27.0 GHz,29.0～31.0 GHz)。通过合理的链路频率配置和电平分配,减小了混频非线性导致的组合频率干扰,输出杂散降低到-60 d Bc。运用MMIC-1对本振输出信号进行二次、三次倍频。根据倍数次数不同,运用2组滤波器进行分段滤波来消除谐波杂散。测试结果表明,输出信号在100 k Hz处的相位噪声指标优于-100 d Bc/Hz。In order to meet the need of system for wide bandwidth,a new Ka-band Up-converter module is presented in this paper.The converter realizes frequency transform from C-band(2.0-4.0GHz)to Ka-band(25.0-27.0GHz,29.0-31.0GHz).Through proper frequency configuration and level allocation,the converter decreases the combined frequency interference caused by mixer nonlinearity,which makes the spurious achieve-60dBc.Following the local oscillator,the MMIC-1is used to realize the frequency doubler and tripler.According to different multiples,two filters are used to reject the unwanted harmonics.The test results show that the phase noise is better than-100dBc/Hz when the output signal is at100kHz.

关 键 词：变频 杂散 组合频率 微带-波导过渡 

分 类 号：TN773[电子电信—电路与系统]