基于ADF4157的小数频率合成器设计  

Design of the Decimal Frequency Synthesizer Based on ADF4157

作　　者：付元增[1] 邵明省[2] 

机构地区：[1]濮阳职业技术学院机电系,河南濮阳457000 [2]鹤壁职业技术学院,河南鹤壁458030

出　　处：《实验室研究与探索》2010年第2期191-195,共5页Research and Exploration In Laboratory

摘　　要：介绍了由锁相技术的芯片ADF4157研制小数分频频率合成器的原理和设计方法。单片机AT89C51作为外围电路,解决了频率合成器中大的鉴相频率与小的频率间隔之间的矛盾,电路简单实用。仿真数据结果表明,不恶化相位噪声,环路开环增益与相位裕量比较好,频率分辨率有了提高。This article introduced the principle and design method of decimal division frequency synthesizer which was developed from the phase lock technique chip ADF4157.The Monolithic integrated circuit ATS9C51 was taken as the peripheral circuit,which solved the contradiction between the big phase demodulation frequency and the small frequency interval in the frequency synthesizer.The elctrical circuit is simple and practical.The simulation results indicated that it does not worsen the phase noise characters,the l...

关 键 词：小数频率 相位裕量 分辨率 双模分频器 

分 类 号：TN74[电子电信—电路与系统]