THE PRINCIPLE & IMPLEMENT OF DIGITAL RECEIVER FOR NMR

Chinese Journal of Magnetic Resonance ›› 2000, Vol. 17 ›› Issue (2): 161-165.

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THE PRINCIPLE & IMPLEMENT OF DIGITAL RECEIVER FOR NMR

LIU Chaoyang, TAN Ping, QIU Jianqing, YE Chaohui

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Science, Wuhan 430071

Received:1999-12-23 Revised:2000-01-24 Published:2000-04-05 Online:2018-01-11

Abstract

Abstract: The digitalization for RF system of NMR spectrometer is the improvement of modern NMR spectrometer, and the replacement for analog quadrature phase-detection with digital phase-detection is a new technology for digital receiver. After analyzing the principle and difficulties of analog QPD receiver, the article introduces the principle of digital QFD, oversampling and IF-sampling, and the implement of digital receiver on MSL-400 spectrometer.

Key words: NMR, Spectrometer, Digital, IF-sampling, Oversampling

LIU Chaoyang, TAN Ping, QIU Jianqing, YE Chaohui. THE PRINCIPLE & IMPLEMENT OF DIGITAL RECEIVER FOR NMR[J]. Chinese Journal of Magnetic Resonance, 2000, 17(2): 161-165.

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THE PRINCIPLE & IMPLEMENT OF DIGITAL RECEIVER FOR NMR

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