Improving the Signal to Noise Ratio of QTF Preamplifiers Dedicated for QEPAS Applications
Authors:
- Piotr Z. Wieczorek,
- Tomasz Starecki,
- Frank K. Tittel
Abstract
The signal-to-noise ratio (SNR) is a major factor that limits the detection sensitivity of quartz-enhanced photoacoustic spectroscopy (QEPAS) sensors. The higher the electrical signal level compared to the noise amplitude is the lower the concentration of gases that can be detected. For this reason the preamplifier circuits used in QEPAS should be optimized for low-frequency narrow-band applications. Moreover, special care should be taken when choosing a particular operational amplifier in either a transimpedance or voltage (differential) configuration. It turns out that depending on the preamp topology different operational amplifier parameters should be carefully considered when a high SNR of the whole QEPAS system is required. In this article we analyzed the influence of the crucial parameters of low-noise operational preamplifiers used in QEPAS applications and show the resulting limitations of transimpedance and voltage configurations.
- Record ID
- WUTbcb2bb2f566a43e59fc61e8e98f3c10a
- Author
- Journal series
- Applied Sciences-Basel, ISSN 2076-3417, Monthly
- Issue year
- 2020
- Vol
- 10
- No
- 12
- Pages
- 1-7
- Publication size in sheets
- 205.25
- Keywords in English
- quartz tuning fork; quartz enhanced photoacoustic; QEPAS sensor preamplifier; QTF front-end electronics
- ASJC Classification
- ; ; ; ; ;
- DOI
- DOI:10.3390/app10124105 Opening in a new tab
- URL
- https://www.mdpi.com/2076-3417/10/12/4105 Opening in a new tab
- Language
- (en) English
- License
- File
-
- File: 1
- Improving the Signal to Noise Ratio of QTF Preamplifiers Dedicated for QEPAS Applications, File WUTbcb2bb2f566a43e59fc61e8e98f3c10a.pdf / 4 MB
- WUTbcb2bb2f566a43e59fc61e8e98f3c10a.pdf
- publication date: 10-11-2020
- Improving the Signal to Noise Ratio of QTF Preamplifiers Dedicated for QEPAS Applications, File WUTbcb2bb2f566a43e59fc61e8e98f3c10a.pdf / 4 MB
-
- Score (nominal)
- 100
- Score source
- journalList
- Score
- = 100.0, 02-05-2022, ArticleFromJournal
- Publication indicators
- = 0; = 1; = 1; : 2018 = 0.985; : 2018 (2 years) = 2.217 - 2018 (5 years) =2.287
- Citation count
- 1
Share
- Uniform Resource Identifier
- https://repo.pw.edu.pl/info/article/WUTbcb2bb2f566a43e59fc61e8e98f3c10a/
- URN
urn:pw-repo:WUTbcb2bb2f566a43e59fc61e8e98f3c10a
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.