发明名称 |
Mutual inductance NMR RF coil matching device |
摘要 |
A matching device uses mutual inductance to couple an NMR radio frequency (RF) coil to an RF power amplifier and RF receiver preamplifier. The device includes a matching coil connected to the RF power amplifier and preamplifier and which is positioned between the NMR RF coil and a decoupling shield in a region where RF flux density, produced by the NMR RF coil, is maximum. This ensures effective coupling to the NMR RF coil and provides a way for adjusting the degree of coupling (hence, input impedance) by varying the area of the matching coil available for intercepting the RF flux.
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申请公布号 |
US4638253(A) |
申请公布日期 |
1987.01.20 |
申请号 |
US19840665487 |
申请日期 |
1984.10.29 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
JASKOLSKI, PATRICK L.;EASH, MATTHEW G. |
分类号 |
H03H7/38;G01N24/08;G01R33/28;G01R33/32;G01R33/34;G01R33/36;G01R33/421;G01R33/422;(IPC1-7):G01R33/20 |
主分类号 |
H03H7/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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