| 基于A/D和DSP技术实现混频的实验方法 |
| |
| 引用本文： | 夏志忠,周广荣.基于A/D和DSP技术实现混频的实验方法[J].电气电子教学学报,2006,28(3):73-75,84. |
| |
| 作者姓名： | 夏志忠 周广荣 |
| |
| 作者单位： | 大连海事大学,信息工程学院,辽宁,大连,116026;大连海事大学,信息工程学院,辽宁,大连,116026 |
| |
| 摘 要： | 本文介绍采用A／D转换器和DSP技术实现混频的一种实验方法，文章从频域角度分析与研究A／D转换器的频率变换功能，并采用欠抽样技术（带通采样技术）对高频带通信号进行采样，然后通过DSP软件编程对采样信号进行实时处理与滤波，便得到低频带通信号。与常规电子线路组成的混频器比较，这种基于A／D和DSP技术实现混频的实验结果表明：对一些固定频率的带通信号是可以实现下混频的。
|
| 关 键 词： | A/D转换 DSP 混频 带通信号 |
| 文章编号： | 1008-0686（2006）03-0073-04 |
| 收稿时间： | 2005-12-30 |
| 修稿时间： | 2005-12-302006-04-27 |
The Experiment Method of the Realization of Frequency Mixing Based on A/D and DSP Technique |
| |
| XIA Zhi-zhong,ZHOU Guang-rong.The Experiment Method of the Realization of Frequency Mixing Based on A/D and DSP Technique[J].Journal of Electrical & Electronic Engineering Education,2006,28(3):73-75,84. |
| |
| Authors: | XIA Zhi-zhong ZHOU Guang-rong |
| |
| Affiliation: | College of Information Engineering, Oalian Maritime University, Oalian 116026, China |
| |
| Abstract: | This paper mainly introduces an experiment method of the realization of frequency mixing based on A/D convertor and DSP technique,analyzes and studies the frequency transformation function of the(A/D) convertor in frequency domain,down sampling(band pass sampling technique) is adopted to sample the high frequency band pass signal.Then the sampled signal is real-time processed and filtered by DSP software programming,and the low frequency band pass signal is obtained.Comparing with the conventional electronically circuit mixer,the experiment result of the frequency mixing based on A/D and DSP technique indicates that the realization of down mixing for some band pass signal of fixed carrier frequency is possible. |
| |
| Keywords: | DSP |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
