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.

  • 本文在分析模拟正交检波原理与不足的基础上,介绍了数字正交检波、过采样和采用中频直接采样的原理,及在400MHz核磁谱仪上的实现方案。

  • 互联网摘选 2025-01-20 17:38:27

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