基于水冷磁体的超高场核磁共振波谱仪前置放大器系统设计与实现

波谱学杂志

基于水冷磁体的超高场核磁共振波谱仪前置放大器系统设计与实现

朱天雄1,2，刘造1，鲍庆嘉1，刘洋1，李正刚1，刘朝阳1*

1. 波谱与原子分子物理国家重点实验室，武汉磁共振中心（中国科学院武汉物理与数学研究所），湖北武汉 430071；2. 中国科学院大学，北京 10049

收稿日期:2013-05-06 修回日期:2013-05-14 出版日期:2014-06-05 发布日期:2014-06-05
作者简介:朱天雄(1987-)，男，湖北人，硕士研究生，无线电物理专业，E-mail：zhu.tianxiong@163.com. *通讯联系人：刘朝阳，电话：027-87198790，E-mail：chyliu@wipm.ac.cn.
基金资助:
国家重大科学仪器设备开发专项资助项目(2011YQ120035).

A Preamplifier System for Water-Cooled Ultra-High Field NMR Spectrometers

ZHU Tian-xiong^1,2，LIU Zao¹，BAO Qing-jia¹，LIU Yang¹，LI Zheng-gang¹，LIU Chao-yang^1*

1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance (Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;2. University of the Chinese Academy of Sciences, Beijing 100049, China

Received:2013-05-06 Revised:2013-05-14 Online:2014-06-05 Published:2014-06-05
About author:*Corresponding author：LIU Chao-yang, Tel: 027-87198790, E-mail：chyliu@wipm.ac.cn.
Supported by:
国家重大科学仪器设备开发专项资助项目(2011YQ120035).

摘要/Abstract

摘要：

基于水冷电磁体的超高场核磁共振实验的需求，提出了一种适用于该类核磁共振波谱仪的前置放大器系统的设计方案并予以实现．该系统包括前置放大器控制器、高带前置放大器、高带混频器、宽带前置放大器以及宽带混频器，实现了通道之间的自由切换、发射与接收的快速切换以及较大的接收动态范围、较低的噪声系数．

关键词: 固体核磁共振(solid state NMR), 波谱仪, 水冷磁体, 前置放大器, 低噪声放大器

Abstract:

This paper introduces the design and implementation of a preamplifier system for water-cooled ultra-high field NMR spectrometers. The system consists of a controller, a high-band low noise amplifier, a high-band mixer, a broadband low noise amplifier and a broadband mixer. The system was shown to be capable of flexible and fast switching between the transmitter mode and receiver mode, and have low noise figure and large receiving range.

Key words: solid state NMR, spectrometers, water-cooling system, preamplifier, low noise amplifier

中图分类号:

O482.53

朱天雄1,2，刘造1，鲍庆嘉1，刘洋1，李正刚1，刘朝阳1*. 基于水冷磁体的超高场核磁共振波谱仪前置放大器系统设计与实现[J]. 波谱学杂志.

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