MULTIGAP PARALLEL-PLATE BRACELET RESONATOR FREQUENCY DETERMINATION AND APPLICATIONS

被引：24

作者：

GONORD, P ^{[1
]}

KAN, S ^{[1
]}

LEROYWILLIG, A ^{[1
]}

WARY, C ^{[1
]}

机构：

[1] CEA,DRIPP,SHFJ,F-91406 ORSAY,FRANCE

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1994年 / 65卷 / 11期

关键词：

D O I：

10.1063/1.1144573

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A loop made from a length of transmission line with alternate electrical discontinuities (gaps) on the two conductors behaves as a resonator whose resonant frequency is a function of the transmission line parameters as well as its form and the number (n) of gaps. For a given loop diameter, one can thus design a wide range of resonant frequency by choice of n and the characteristic impedance Zc of the line. The analysis is illustrated by a parallel-plate transmission line resonator in the form of a bracelet. Experimental resonant frequencies obtained from resonators of various dimensions are in good agreement with calculated values. Two resonators were tested on a 3 T NMR imager: A 11 cm diameter 1H surface coil, yielding results comparable to those obtained from a lumped capacitor coil and a 13 cm diameter volume coil to perform in vivo muscle 13C spectroscopy without 1H decoupling.

引用

页码：3363 / 3366

页数：4

共 10 条

[1] QUICK MEASUREMENT OF NMR-COIL SENSITIVITY WITH A DUAL-LOOP PROBE [J].