Journal of Radio Electronics. eISSN 1684-1719. 2025. ¹11
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2025.11.45
high-resolution spectrometer of 75-110 GHz frequency
range for study of the multicomponent gas mixtures
V.L. Vaks1, V.A. Anfertev1, E.G. Domracheva1, S.I. Pripolzin1,
M.B. Chernyaeva1,2, A.A. Yablokov1, A.S. Cherniaeva1
1Institute for Physics of Microstructures of RAS,
603950, Russia, Nizhny Novgorod, GSP-1052Lobachevsky University
603022, Nizhny Novgorod, Gagarina av, 23
The paper was received October 21, 2025.
Abstract. The use of measurements in several ranges leads to an increase in the reliability of the determination of substances in the compositions of multicomponent gas mixtures of various origins (detection of a substance in several ranges reliably confirms its presence in the studied mixture), which is relevant for various applications, including those actual for the medical diagnosis and control of the treatment of metabolites-markers of diseases and pathologies. In addition, it becomes possible to detect substances in a more convenient range for measurements. The aim of the work is to develop and implement a non-stationary gas spectrometer in the 75-110 GHz range with phase switching of radiation acting on the gas. The spectrometer concept is based on the use of commercially available devices and components. Test measurements were carried out using the example of acetonitrile, which has strong absorption lines in the operating range of the spectrometer. The developed and realized spectrometer complements the spectroscopic complex, which includes high-resolution gas spectrometers based on the effect of fast frequency swiping and phase manipulation of radiation acting on the gas in the frequency ranges 18-26 GHz, 118-175 GHz, as well as near 2 THz and 3.78 THz. In addition, besides developed software for measuring and processing the results obtained, a program has been written that allows the identification of experimentally measured absorption lines using freely available spectroscopic databases.
Key words: high-resolution spectrometer, subterahertz frequency range, devices of semiconductor electronics, multicomponent gas mixture, absorption spectrum.
Financing: The work is supported by the Russian Science Foundation, grant No. 24-19-00623, https://rscf.en/project /24-19-00623/
Corresponding author: Domracheva Elena Georgievna, elena@ipmras.ru
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For citation:
Vaks V.L., Anfertev V.A., Domracheva E.G., Pripolzin S.I., Chernyaeva M.B., Yablokov A.A., Cherniaeva A.S. High-resolution spectrometer of 75-110 frequency range for study of the multicomponent fas mixtures. // The Journal of Radio Electronics. – 2025. – ¹. 11. – https://doi.org/10.30898/1684-1719.2025.11.45 (In Russian)