The design of a low-noise preamplifier for MRI

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 analyz...

Full description

Saved in:
Bibliographic Details
Published in:Science China Technological Sciences 2011-07, Vol.54 (7), p.1766-1770
Main Authors: Cao, XueMing, Zu, DongLin, Zhao, XuNa, Fan, Yang, Gao, JiaHong
Format: Article
Language:English
Subjects:
China
Engineering
FET
Gain
Matching
MRI
Networks
Noise
Noise levels
Preamplifiers
低噪声
前置放大器
匹配网络
噪声系数
网络分析仪
设计
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1674-7321
1869-1900
1862-281X
DOI:10.1007/s11431-011-4379-z