【作者】 林建英； 马忠志； 杨素英；

【Author】 Lin Jianying Ma Zhongzhi Yang Suying (Electronic & Engineering College Dalian University of technology Dalian 116023 China)

【机构】 大连理工大学电子信息工程学院；

【摘要】 本文提出了一种便携式数字频谱分析仪的设计方案与实现方法。该分析仪基于快速傅里叶变换(FFT)频谱分析原理,利用Altera公司提供的FFT IP core在FPGA上实现了512点FFT处理器,对高速A/D采集到的信号进行频谱分析;单片机与键盘、1602液晶显示器共同组成了人机接口,并通过总线接口向FPGA发送控制字。该频谱分析仪显示直观,使用方便,体现了便携式的设计要求。更多还原

【Abstract】 In this paper,a realization scheme of portable spectrum analyzer is proposed The design of analyzer is based on Fast Fourier Transform(FFT) which utilizes FPGA and Micro-chip as a core FFT IP core supplied by Altera is taken advantage to implement 512 FFT processor on FPGA,converting the time-domain signal collected by the high-speed A/D into the frequency-domain The Micro-chip sends control instructions to FPGA by bus interface It also implements the user interface with keyboard and 1602 LCD This spectrum analyzer could perform a visual display and easy usage which represents the portable design requirements.更多还原