| 四路并行DDS合成技术在核磁共振中的应用 |
| |
| 引用本文： | 蒋瑜,沈建华,蒋赟,李鲠颖. 四路并行DDS合成技术在核磁共振中的应用[J]. 波谱学杂志, 2000, 17(6): 483-487 |
| |
| 作者姓名： | 蒋瑜 沈建华 蒋赟 李鲠颖 |
| |
| 作者单位： | 1. 教育部光谱学与波谱学重点实验室, 华东师范大学物理系, 上海 200062;2. 华东师范大学计算机系, 上海 200062 |
| |
| 基金项目： | 国家自然科学基金，高等学校骨干教师资助计划课题 |
| |
| 摘 要： | 频率综合仪是核磁共振(NMR)谱仪的重要组成部分.随着微电子技术的迅速发展,用直接数字频率合成(DDS)方法来产生核磁共振射频信号已经成为可能.但是,由于数字集成电路工作频率的局限性,制约了DDS在高频段的应用.本文采用多路并行DDS合成技术,大大地提高了数字合成信号的频率范围。
|
| 关 键 词： | 直接数字合成 四路并行 核磁共振 |
| 收稿时间： | 2000-10-16 |
APPLICATION OF THE FOUR DDS DEVICES RUNNING IN PARALLEL TO NMR |
| |
| JIANG Yu,SHEN Jian-hua,JIANG Yun,LI Geng-ying. APPLICATION OF THE FOUR DDS DEVICES RUNNING IN PARALLEL TO NMR[J]. Chinese Journal of Magnetic Resonance, 2000, 17(6): 483-487 |
| |
| Authors: | JIANG Yu SHEN Jian-hua JIANG Yun LI Geng-ying |
| |
| Affiliation: | 1. Key Laboratory for Optical and Magnetic Resonance Spectroscopy, East China Normal University Department of Physics;2. Computer Department, East China Normal University, Shanghai 200062 |
| |
| Abstract: | Frequency synthesizer is an important part in Nuclear Magnetic Resonance (NMR). With rapid development of micro electronics technology, Direct Digital Synthesizer (DDS) becomes possible. Application of DDS to NMR spectroscopy has been successful, but it is generally limited to low frequency range. In order to solve the difficulty, we studied and designed a frequency synthesizer, which involves multiple DDS chips running in parallel. |
| |
| Keywords: | DDS Parallel operation NMR |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《波谱学杂志》浏览原始摘要信息 |
|
点击此处可从《波谱学杂志》下载全文 |
|
