设计和实施集成的双模脉冲和连续波电子偏磁共振光谱仪
IEEE transactions on biomedical circuits and systems
|September 20, 2024
概括
这项研究引入了第一个集成的芯片脉冲电子磁共振 (EPR) 光谱仪. 这种便携式,低功耗的设备可以在各种应用中灵敏地检测激素.
科学领域:
- 频谱学是一种光谱学.
- 电子 电子 电子 电子 电子 电子 电子
- 化学 化学 化学
背景情况:
- 电子偏磁共振 (EPR) 检测具有未配对电子的基.
- 便携式EPR系统可以扩展诊断和基础科学的应用.
- 现有的EPR方法包括连续波 (CW) 和脉冲EPR.
研究的目的:
- 开发第一个完全集成的芯片式脉冲EPR光谱仪.
- 为了展示一个便携式,低功耗的EPR传感模式.
- 为了验证设备的性能,用于CW和脉冲EPR实验.
主要方法:
- 为芯片上的EPR光谱仪设计了一个亚波直接转换架构.
- 使用芯片上的振荡器作为CW和脉冲EPR的双模式传感单元.
- 采用芯片上的参考振荡器用于脉冲生成和信号向下转换.
主要成果:
- 实现了旋转的脉冲灵敏度 (1000平均值) 和旋转的CW灵敏度/.
- 证明低功耗低至2.1mW (CW模式).
- 该系统可在12.8-14.9GHz之间调,并通过USB控制.
结论:
- 集成的芯片上的光谱仪可用于便携式EPR传感.
- 该设备支持各种脉冲EPR序列 (FID,反转恢复,哈恩回声,刺激回声) 和CW操作.
- 这项技术有可能用于临床诊断和更广泛的科学应用.
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