A compact Class D RF power amplifier for mobile nuclear magnetic resonance systems

J. Zhen, R. Dykstra, C. Eccles, G. Gouws, S. Obruchkov

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A 20 MHz Class D amplifier with an output of 100 W of RF power has been developed. The compact size printed circuit board area of 50 cm2 and efficiency of 73% make it suitable for mobile nuclear magnetic resonance (NMR) systems. Test results show that the rise and ring down times of the amplifier are less than 0.2 μs, and it is capable of producing constant amplitude pulses as short as 2 μs. Experiments using a Carr Purcell Meiboom Gill pulse sequence with a NMR MOUSE sensor confirm that the Class D amplifier is suitable for mobile NMR applications.

Original languageEnglish
Article number074704
Number of pages6
JournalReview of Scientific Instruments
Volume88
Issue number7
DOIs
Publication statusPublished - 1 Jul 2017

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