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Molecular Spectroscopy With a Compact 557-GHz Heterodyne Receiver

Neumaier, Philipp F.-X. and Richter, Heiko and Stake, Jan and Zhao, Huan and Tang, Aik-Yean and Drakinskiy, Vladimir and Sobis, Peter and Emrich, Anders and Hülsmann, Axel and Johansen, Tom K. and Bryllert, Tomas and Hanning, Johanna and Krozer, Viktor and Hübers, Heinz-Wilhelm (2014) Molecular Spectroscopy With a Compact 557-GHz Heterodyne Receiver. IEEE Transactions on Terahertz Science and Technology, 4 (4), pp. 469-478. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TTHZ.2014.2326554 ISSN 2156-342X

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Official URL: http://dx.doi.org/10.1109/TTHZ.2014.2326554

Abstract

We report on a heterodyne terahertz spectrometer based on a fully integrated 557-GHz receiver and a digital fast Fourier transform spectrometer. The receiver consists of a chain of multipliers and power amplifiers, followed by a heterostructure barrier varactor tripler that subharmonically pumps a membrane GaAs Schottky diode mixer. All sub-components are newly developed and optimized with regard to the overall receiver performance such as noise temperature, power consumption, weight and physical size. The receiver works at room temperature, has a double sideband noise temperature as low as 2000 K at a maximum power consumption of 4.5 W with an Allan time of 10 s and a sideband gain ratio of 0.52. The performance of the spectrometer is demonstrated by absorption spectroscopy of H2O and CH3OH with an instantaneous bandwidth of 1.5 GHz and a resolution of 183 kHz. Several pressure broadening parameters of methanol absorption lines were determined, that agree with other published data. Using the experimentally determined molecular parameters the CH3OH absorption spectrum could be modeled with very high precision.

Item URL in elib:https://elib.dlr.de/94013/
Document Type:Article
Title:Molecular Spectroscopy With a Compact 557-GHz Heterodyne Receiver
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Neumaier, Philipp F.-X.philipp.neumaier (at) dlr.deUNSPECIFIED
Richter, HeikoHeiko.Richter (at) dlr.deUNSPECIFIED
Stake, JanChalmers University of TechnologyUNSPECIFIED
Zhao, HuanChalmers University of TechnologyUNSPECIFIED
Tang, Aik-YeanChalmers University of TechnologyUNSPECIFIED
Drakinskiy, VladimirChalmers University of TechnologyUNSPECIFIED
Sobis, PeterOmnisys Instruments ABUNSPECIFIED
Emrich, AndersOmnisys Instruments ABUNSPECIFIED
Hülsmann, AxelFraunhofer Institute for Applied Solid State PhysicsUNSPECIFIED
Johansen, Tom K.Technical University DenmarkUNSPECIFIED
Bryllert, TomasWasa Millimeter Wave ABUNSPECIFIED
Hanning, JohannaWasa Millimeter Wave ABUNSPECIFIED
Krozer, ViktorGoethe-University FrankfurtUNSPECIFIED
Hübers, Heinz-Wilhelmheinz-wilhelm.huebers (at) dlr.deUNSPECIFIED
Date:4 June 2014
Journal or Publication Title:IEEE Transactions on Terahertz Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:4
DOI :10.1109/TTHZ.2014.2326554
Page Range:pp. 469-478
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:2156-342X
Status:Published
Keywords:MMICs, Schottky diode, heterodyne receiver, heterostructure barrier varactors, mHEMT, methanol, molecular spectroscopy, power amplifiers, terahertz
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 (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Deposited By: Neumaier, Philipp
Deposited On:07 Jan 2015 10:08
Last Modified:06 Sep 2019 15:23

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