一种L波段小步进低相噪跳频频率源的设计  

Design of an L-Band Small Step Low Phase Noise Frequency Hopping Source

作　　者：王敏 WANG Min(The 13th Research Institute of CETC,Shijiazhuang 050051,China)

机构地区：[1]中国电子科技集团第十三研究所,河北石家庄050051

出　　处：《通信电源技术》2022年第3期50-52,共3页Telecom Power Technology

摘　　要：当前通信系统中对频率源的综合性能要求越来越高,小步进、低杂散和低相噪是频率源发展的重要趋势。介绍一种L波段频率源的设计,结合各种频率源技术的优缺点,论述了一种直接数字式频率合成器(Direct Digital Synthesizer,DDS)与多个固定本振频率源分段混频后分段滤波的设计方案,并经过电路调试与测试,最终实现了小步进、低杂散和低相噪的较高指标要求。At present,the requirements for the comprehensive performance of frequency source in communication system are higher and higher,small step,low spurious and low phase noise are important trends in the development of frequency sources.This paper introduces the design of an L-band frequency source,combines the advantages and disadvantages of varioua frequency source technologies,introduces a design scheme of segmented filtering after segmented mixing between Direct Digital Synthesizer(DDS)and multiple fixed LO frequency sources.Finally,after circuit debugging and testing,the high target requirements of small step,low spurious and low phase noise are realized.

关 键 词：频率源 直接数字式频率合成器(DDS) 分段 

分 类 号：TN7[电子电信—电路与系统]