A method for matching high-temperature superconductor resonators used for NMR signal pickup at 400 MHz.
basic_science · Level V
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Abstract
This paper describes a method for matching high-temperature superconducting nuclear magnetic resonance (NMR) signal pickup coils to field-effect transistor (FET) preamplifiers using amplifier-specific noise figure and gain parameters to obtain a matching compromise that improves gain flatness for a given permissible noise figure. A technique for obtaining these parameters is also described in an appendix.
Medical subject headings
- Hot Temperature
- Magnetic Resonance Spectroscopy
- Microscopy
- Signal Processing, Computer-Assisted