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Superconducting hot-electron bolometer mixer for terahertz heterodyne receivers

Semenov, A.D. and Hübers, H.-W. and Richter, H. and Birk, Manfred and Krocka, Michail and Mair, Ulrich and Vachtomin, Y.V. and Finkel, M. and Antipov, S. and Voronov, B. and Smirnov, K. and Kaurova, N. and Drakinski, V. and Gotsman, G. (2003) Superconducting hot-electron bolometer mixer for terahertz heterodyne receivers. IEEE Transactions on Applied Superconductivity, 13 (2), pp. 168-171. DOI: 10.1109/TASC.2003.813672. ISSN 1051-8223.

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Official URL: http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?isnumber=27267&arnumber=1211568&count=270&index=25


We present recent results showing the development of superconducting NbN hot-electron bolometer mixer for German receiver for astronomy at terahertz frequencies and terahertz limb sounder. The mixer is incorporated into a planar feed antenna, which has either logarithmic spiral or double-slot configuration, and backed on a silicon lens. The hybrid antenna had almost frequency independent and symmetric radiation pattern slightly broader than expected for a diffraction limited antenna. At 2.5 THz the best 2200 K double side-band receiver noise temperature was achieved across a 1 GHz intermediate frequency bandwidth centred at 1.5 GHz. For this operation regime, a receiver conversion efficiency of -17 dB was directly measured and the loss budget was evaluated. The mixer response was linear at load temperatures smaller than 400 K. Implementation of the MgO buffer layer on Si resulted in an increased 5.2 GHz gain bandwidth. The receiver was tested in the laboratory environment by measuring a methanol emission line at 2.5 THz.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2004,
Title:Superconducting hot-electron bolometer mixer for terahertz heterodyne receivers
AuthorsInstitution or Email of Authors
Krocka, MichailUNSPECIFIED
Vachtomin, Y.V.Staatliche Pädagogische Universität, Moskau, Russland
Finkel, M.Staatliche Pädagogische Universität, Moskau, Russland
Antipov, S.Staatliche Pädagogische Universität, Moskau, Russland
Voronov, B.Staatliche Pädagogische Universität, Moskau, Russland
Smirnov, K.Staatliche Pädagogische Universität, Moskau, Russland
Kaurova, N.Staatliche Pädagogische Universität, Moskau, Russland
Drakinski, V.Staatliche Pädagogische Universität, Moskau, Russland
Gotsman, G.Staatliche Pädagogische Universität, Moskau, Russland
Journal or Publication Title:IEEE Transactions on Applied Superconductivity
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 168-171
Keywords:hot electron bolometer, heterodyne receiver
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben IR-Astronomie (old)
Location: Berlin-Adlershof , Oberpfaffenhofen
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Remote Sensing Technology Institute
Deposited By: Susanne Pieth
Deposited On:01 Dec 2005
Last Modified:27 Apr 2009 04:42

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