基于AD9858的快速捷变频频率合成器的设计  

AD9858 Based Frequency Synthesizer for Fast Frequency Hopping

作　　者：夏永祥[1] 郭德淳[1] 余军[2] 费元春[1] 

机构地区：[1]北京理工大学信息科学技术学院,北京100081 [2]海军飞行学院教研部,辽宁葫芦岛125001

出　　处：《现代雷达》2005年第7期58-61,共4页Modern Radar

摘　　要：选用内部时钟可达1GHz的高性能直接数字合成频率源DDS芯片AD9858作为核心器件设计频率合成器,采用DDS+DSP+SAWO的设计方案,设计成功905MHz低相噪、高稳定度的声表面波振荡器为AD9858提供参考时钟,整个系统采用高性能的DSP作为控制电路。文中详细阐述了AD9858芯片的主要性能及其在快速捷变频频率合成器设计中的应用方法。The high performance DDS chip AD9858 produced by Analog Device Inc is adopted to design a frequency synthesizer in this paper. A design scheme of DDS +DSP +SAWO is adopted. The designed synthesizer has low phase noise and high stability SAW oscillator to offer a reference clock for AD9858. The whole system adopts high-performance DSP as the control circuit .The main performance characteristics of AD9858 chip and its application to frequency synthesizer with fast frequency hopping is mainly introduced in detail.

关 键 词：AD9858芯片 声表谐振器 直接数字合成频率源 频率控制字 

分 类 号：TN74[电子电信—电路与系统]