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Towards Breath Gas Analysis Based on Millimeter-Wave Molecular Spectroscopy

Rothbart, Nick and Hübers, Heinz-Wilhelm and Schmalz, K. and Borngräber, J. and Kissinger, D. (2018) Towards Breath Gas Analysis Based on Millimeter-Wave Molecular Spectroscopy. Frequenz, 72 (3-4), pp. 87-92. de Gruyter. DOI: 10.1515/freq-2018-0015 ISSN 0016-1136

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Official URL: https://doi.org/10.1515/freq-2018-0015


Breath gas analysis is a promising non-invasive tool for medical diagnosis as there are thousands of Volatile Organic Compounds (VOCs) in human breath that can be used as health monitoring markers. Millimeter-wave/terahertz molecular spectroscopy is highly suitable for breath gas analysis due to unique fingerprint spectra of many VOCs in that frequency range. We present our recent work on sensor systems for gas spectroscopy based on integrated transmitters (TX) and receivers (RX) fabricated in IHPs 0.13 um SiGe BiCMOS technology. For a single-band system, spectroscopic measurements and beam profiles are presented. The frequency is tuned by direct voltage-frequency tuning and by a fractional-n PLL, respectively. The spectroscopic system includes a folded gas absorption cell with gas pre-concentration abilities demonstrating the detection of a 50 ppm mixture of ethanol in ambient air corresponding to a minimum detectable concentration of 260 ppb. Finally, the design of a 3-band system covering frequencies from 225 to 273 GHz is introduced.

Item URL in elib:https://elib.dlr.de/124530/
Document Type:Article
Title:Towards Breath Gas Analysis Based on Millimeter-Wave Molecular Spectroscopy
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rothbart, Nicknick.rothbart (at) dlr.deUNSPECIFIED
Hübers, Heinz-Wilhelmheinz-wilhelm.huebers (at) dlr.deUNSPECIFIED
Schmalz, K.IHP Frankfurt, OderUNSPECIFIED
Borngräber, J.IHP Frankfurt, OderUNSPECIFIED
Kissinger, D.IHP Frankfurt, OderUNSPECIFIED
Date:28 March 2018
Journal or Publication Title:Frequenz
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1515/freq-2018-0015
Page Range:pp. 87-92
Publisher:de Gruyter
Keywords:Gasspektroskopie, Gassensor, Terahertz, Millimeterwellen
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Traffic Management (old)
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - Optimode.net (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Rothbart, Nick
Deposited On:07 Dec 2018 09:22
Last Modified:06 Sep 2019 15:16

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