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Gas Spectroscopy System for Breath Analysis at mm-wave/THz Using SiGe BiCMOS Circuits

Schmalz, K. and Rothbart, Nick and Neumaier, Philipp F.-X. and Borngräber, J. and Hübers, H.-W. and Kissinger, D. (2017) Gas Spectroscopy System for Breath Analysis at mm-wave/THz Using SiGe BiCMOS Circuits. IEEE Transactions on Microwave Theory and Techniques, 65 (5), pp. 1807-1818. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TMTT.2017.2650915 ISSN 0018-9480

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The unique fingerprint spectra of volatile organic compounds for breath analysis and toxic industrial chemicals make an mm-wave (mmW)/THz gas sensor very specific and sensitive. This paper reviews and updates results of our recent work on sensor systems for gas spectroscopy based on integrated transmitter (TX) and receiver (RX), which are developed and fabricated in IHP’s 0.13 µm SiGe BiCMOS technology. In this paper, we present an mmW/THz spectroscopic system including a folded gas absorption cell of 1.9 m length between the TX and RX modules. We discuss the results and specifications of our sensor system based on integrated TX and RX. We demonstrate TXs and RXs with integrated antennas for spectroscopy at 238-252 GHz and 494-500 GHz using integer-N phase-locked loops (PLLs). We present a compact system by using fractional-N PLLs allowing frequency ramps for the TX and RX, and for TX with superimposed frequency shift keying or reference frequency modulation. In another configuration, the voltage controlled oscillators of the TX and RX local oscillator are tuned directly without PLLs by applying external voltages. Further developments of our system are aimed at realizing an even wider frequency span by switching between frequency bands, and to use a more compact gas absorption cell.

Item URL in elib:https://elib.dlr.de/113402/
Document Type:Article
Title:Gas Spectroscopy System for Breath Analysis at mm-wave/THz Using SiGe BiCMOS Circuits
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schmalz, K.ihp frankfurt, oderUNSPECIFIED
Rothbart, Nicknick.rothbart (at) dlr.deUNSPECIFIED
Neumaier, Philipp F.-X.philipp.neumaier (at) dlr.deUNSPECIFIED
Borngräber, J.ihp frankfurt, oderUNSPECIFIED
Kissinger, D.ihp frankfurt, oderUNSPECIFIED
Date:May 2017
Journal or Publication Title:IEEE Transactions on Microwave Theory and Techniques
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1109/TMTT.2017.2650915
Page Range:pp. 1807-1818
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Keywords:Gas spectroscopy, mm-wave (mmW), receiver, sensor, SiGe, terahertz (THz), transmitter
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
Deposited By: Rothbart, Nick
Deposited On:25 Jul 2017 13:55
Last Modified:08 Mar 2018 18:36

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