现代电子技术2016，Vol.39Issue(9)：78-81,4.DOI:10.16652/j.issn.1004-373x.2016.09.018
基于ARM和DDS的频谱分析仪的设计与实现
Design and implementation of spectrum analyzer based on ARM and DDS
梁城1
作者信息
- 1. 合肥工业大学 电子科学与应用物理学院，安徽 合肥 230009
- 折叠
摘要
Abstract
A spectrum analysis scheme based on ARM platform is proposed,in which the fast Fourier transform (FFT) principle is used to realize signal,spectrum analysis and display. The DDS(direct digital synthesis)circuit is taken as the signal generator in spectral analysis. The signal processed by amplitude adjusting circuit is sampled by A/D inside STM32,and then operated with FFT. After that the amplitude spectrum of each frequency point is displayed on LCD. The experimental results show that the spectrum analyzer can entirely satisfy the spectrum analysis demand of 0~20 kHz low⁃frequency band,and can be applied to spectrum analysis and process of the audio signal. The analyzer has a certain application value due to its low cost.关键词
频谱分析/直接数字频率合成/幅度调整电路/快速傅里叶变换Key words
spectrum analysis/direct digital synthesis/amplitude adjusting circuit/fast Fourier transform分类
信息技术与安全科学引用本文复制引用
梁城..基于ARM和DDS的频谱分析仪的设计与实现[J].现代电子技术,2016,39(9):78-81,4.
