The design of a low-noise preamplifier for MRI

被引：0
|
作者：
CAO XueMing
机构：
来源：
Science China Technological Sciences | 2011年 / 07期
基金：
中国国家自然科学基金;
关键词：
MRI; noise figure; preamplifier; noise matching network; gain; source impedance;
D O I：
暂无
中图分类号：
TN722 [放大器];
学科分类号：
080902 ;
摘要：
In this paper, a low-noise preamplifier for MRI is designed and studied. A noise matching network consisting of three elements is presented. To the single-stage AsGa-FET preamplifier working at 128 MHz, the measured gain through network analyzer (HP8712C) and noise figure through noise figure analyzer (8970B) are 25 and 0.43 dB, respectively.
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页码：1766 / 1770
页数：5
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