| 一体化核磁共振数字接收机的设计 |
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| 引用本文： | 徐勤,沈杰,蒋瑜,李鲠颖.一体化核磁共振数字接收机的设计[J].波谱学杂志,2005,22(4):357-365. |
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| 作者姓名： | 徐勤 沈杰 蒋瑜 李鲠颖 |
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| 作者单位： | 华东师范大学物理系,华东师范大学光谱学与波谱学教育部重点实验室,上海200062;华东师范大学物理系,华东师范大学光谱学与波谱学教育部重点实验室,上海200062;华东师范大学物理系,华东师范大学光谱学与波谱学教育部重点实验室,上海200062;华东师范大学物理系,华东师范大学光谱学与波谱学教育部重点实验室,上海200062 |
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| 摘 要： | 提出一种基于AD9874的数字接收机设计，其主要部件如放大器、混频器、数字解调器等都集成在单块芯片中，利用此一体化数字接收机可以大大简化核磁共振谱仪的设计. 最后给出了核磁共振的实验结果.
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| 关 键 词： | 核磁共振 磁共振成像 数字接收机 直接数字频率合成 |
| 文章编号： | 1000-4556（2005）04-0357-09 |
| 收稿时间： | 2005-04-11 |
| 修稿时间： | 2005-06-22 |
A Digital Receiver for Nuclear Magnetic Resonance Spectrometer |
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| XU Qin,SHEN Jie,JIANG Yu,LI Geng-ying.A Digital Receiver for Nuclear Magnetic Resonance Spectrometer[J].Chinese Journal of Magnetic Resonance,2005,22(4):357-365. |
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| Authors: | XU Qin SHEN Jie JIANG Yu LI Geng-ying |
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| Institution: | Key Laboratory for Optical and Magnetic Resonance Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China |
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| Abstract: | A digital receiver for uses in nuclear magnetic resonance spectrometers was developed. Compared with the traditional ones, the digital receiver described in this study is capable of eliminating completely image peaks resulting from phase errors in the reference signals and unbalance in the gains between the two receiver channels. In addition, the digital receiver has features such as low cost, high flexibility, easy to use and small size. Detailed design strategy and experimental demonstration are given in the paper. |
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| Keywords: | NMR MRI digital receiver DDS |
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