Abstract
The radio-frequency (RF) front-end can operate at power levels, bandwidths, and circuit length unique in the NMR field. New technology has been developed for these components to optimize the performance of the NMR spectrometer. For broader spectral bandwidths and to compensate for chemical shift dispersion error, two 15kW solid state amplifiers have been developed for implementation on a 'home-built' 4.1 Tesla clinical system. A stripline transformed, nonmagnetic, tuned GaAsFET preamp has been built for achieving high gain and low noise at the RF coil. A nonmagnetic dual quadrature hybrid -PIN diode T/R switch was developed to isolate the RF power amplifier from the receiver. New high frequency coils have made use of tuned cavities and transmission lines.
Original language | English (US) |
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Title of host publication | IEEE Nuclear Science Symposium & Medical Imaging Conference |
Editors | Anon |
Publisher | IEEE |
Pages | 1524-1528 |
Number of pages | 5 |
Volume | 4 |
State | Published - Jan 1 1995 |
Event | Proceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4) - Norfolk, VA, USA Duration: Oct 30 1994 → Nov 5 1994 |
Other
Other | Proceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4) |
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City | Norfolk, VA, USA |
Period | 10/30/94 → 11/5/94 |