SIGNAL-PROCESSING IN TRANSCEIVERS FOR NUCLEAR-MAGNETIC-RESONANCE AND IMAGING

被引：12

作者：

KASAL, M ^{[1
]}

HALAMEK, J ^{[1
]}

HUSEK, V ^{[1
]}

VILLA, M ^{[1
]}

RUFFINA, U ^{[1
]}

COFRANCESCO, P ^{[1
]}

机构：

[1] DIPARTIMENTO FIS A VOLTA,I-27100 PAVIA,ITALY

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1994年 / 65卷 / 06期

关键词：

D O I：

10.1063/1.1144840

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The relationships between signal processing schemes and expected performances of several types of NMR transceiver are discussed to show how emerging digital technologies may be used in future systems. We identify a transceiver architecture where accuracy of the analog signal processing functions is not critical, and top performances are obtained through real-time digital signal processing. Our receiver, comprising an oversampling analog-to-digital converter scheme, achieves a dynamic range of 12 bits at bandwidths above 1 MHz, and a dynamic range in excess of 16 bits at bandwidths < 15 kHz. We give an outline of specifications and hardware design issues of the main parts of this transceiver and demonstrate experimentally the superior performances of our receiver.

引用

页码：1897 / 1902

页数：6

共 18 条

[1]

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[2] A NEW NMR DUPLEXER MADE WITH QUADRATURE COUPLERS [J].