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12 March 2019 Design of a very high resolution FTIR atmospheric monitoring pre-amplifier circuit
Zhengyang Yu, Xin Li, Zhipeng Gong, Jian Su, Yugui Zhang, Mao Yan
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Proceedings Volume 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application; 110232X (2019) https://doi.org/10.1117/12.2521824
Event: Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 2018, Xi'an, China
Abstract
Due to its high resolution, large flux, and high signal-to-noise ratio, Fourier Transform Infrared Spectroscopy (FTIR) is often used to monitor atmospheric environment. The preamplifier, as the key module of the FTIR optical receiver system, determines the accuracy, SNR and other key parameters of the subsequent signal directly. This paper presents a high gain and wide dynamic range preamplifier based on high performance integrated op amp. Using a low noise op amp IV conversion and multi-level Butterworth type active filter, a very weak signal input, multi-file Gain low noise and high SNR preamplifier circuit was designed. Experiments show: the preamplifier can make the signal of the atmospheric FTIR monitor meet the SNR and quality requirements.
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Zhengyang Yu, Xin Li, Zhipeng Gong, Jian Su, Yugui Zhang, and Mao Yan "Design of a very high resolution FTIR atmospheric monitoring pre-amplifier circuit", Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110232X (12 March 2019); https://doi.org/10.1117/12.2521824
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KEYWORDS
Signal to noise ratio
Interference (communication)
Amplifiers
Signal detection
FT-IR spectroscopy
Electronic filtering
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