WANG Wei, ZHANG Bin, WU Song. Study of AM demodulation technology based on CORDIC algorithm[J]. 2012, 31(2): 36-38. DOI: 10.13873/j.1000-97872012.02.024.
基于CORDIC算法的AM解调技术研究
摘要
提出了一种基于CORDIC算法的数字正交AM解调设计技术
讨论了AM解调的原理
重点分析了利用CORDIC算法综合实现数控振荡器与混频器、计算开平方的过程
介绍了关键模块的设计方案
仿真结果表明:该方法高精度地完成了AM解调
具有较高的工程应用价值。
Abstract
A technique of digital quadrature AM demodulation design based on CORDIC algorithm is presented.The principle of AM demodulation is discussed
and the process of combining NCO and frequency mixer together and calculating square root using CORDIC algorithm are analyzed detailedly.The design schemes of key modules are introduced.The simulation results indicate that this method completes AM demodulation with high precision and has great application value in project.