波谱学杂志2011，Vol.28Issue(2)：207-215,9.
宽带低相噪频率合成器的设计与实现
Design and Implementation of a Frequency Synthesizer with Wide Frequency-Coverage and Low Phase Noise Level
摘要
Abstract
The design and implementation of a frequency synthesizer with wide-band output frequency spanning, high resolution, and low phase noise level was proposed. The frequency synthesizer contains three sections: 1) a STM32 which serves as the synthesizer′s controller and provides a CAN bus interface for remote frequency control, 2) a clock distribution section which generates fixed frequency references and provides fine output frequency resolution, and 3) a triple-mix section which operates in a drift canceling loop and alters the output frequency with a 30 MHz step. The frequency synthesizer design was used on a home-built 500 MHz NMR spectrometer. Its performance was demonstrated by sensitivity tests with 1H NMR spectroscopy.关键词
核磁共振(NMR)/频率合成器/三混频频率合成法/低相位噪声Key words
NMR/ frequency synthesizer/ triple-mix/ low phase noise分类
数理科学引用本文复制引用
梅径,毛文平,胡鹏,李正刚,陈方,刘朝阳..宽带低相噪频率合成器的设计与实现[J].波谱学杂志,2011,28(2):207-215,9.基金项目
国家自然科学基金资助项目(10675162),国家科技支撑计划资助项目(2006BAK03A22). （10675162）
