| 摘要: |
| 从软件无线电对宽带中频模数变换器(ADC)的要求出发，首先提出了一种以欠采样技术为基础的方案，并对宽带信号的采样率进行了计算；然后详细分析了地面反弹等因素对ADC器件性能的影响，给出了具体的分析结果，最后介绍了指标选取时需考虑的因素。本文的分析和结论对宽带中频采样的设计和器件选取有一定指导意义。 |
| 关键词: 软件无线电 中频采样 宽带中频 ADC A／D 器件性能 宽带信号 欠采样 模数变换器 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目:中国科学院创新工程重大项目资助(KGCX1-Y-03) |
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| Characteristic Analysis of ADC in Broadband IF Sampling Scheme of Software Radio |
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| Abstract: |
| According to the requirements of broadband intermediate-frequency (IF) A/D converter(ADC) needed by software radio, the sampling rate of broadband signal is calculated. Then the influence of some factors such as ground bounce on ADC's characteristics is analysed. Finally, the practical principles for choosing ADC's specifications are discussed.The analysis and conclusion in this paper is helpful for design of broadband IF sampling and ADC selection. |
| Key words: Software radio,Broadband IF sampling,A/D convertor (ADC),Characteristic analysis |
