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Maslennikov, S. N.; Morozov, D. V.; Ozhegov, R. V.; Smirnov, K. V.; Okunev, O. V.; Gol’tsman, G. N. |
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Title |
Imaging system for submillimeter wave range based on AlGaAs/GaAs hot electron bolometer mixers |
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Conference Article |
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2004 |
Publication  |
Proc. 5-th MSMW |
Abbreviated Journal |
Proc. 5-th MSMW |
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2 |
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558-560 |
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Keywords |
AlGaAs/GaAs HEB mixers |
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Abstract |
Electromagnetic radiation of the submillimeter (SMM) range is dispersed and absorbed significantly less than infrared (IR) radiation when passing through different objects. That is the reason for the development of an SMM imaging system. In this paper, we discuss the design of an SMM heterodyne imager, based on a matrix of AlGaAs/GaAs heterostructure hot electron bolometer mixers (HEB) with relatively high (about 77 K) operating temperature. The predicted double side band (DSB) noise temperature is about 1000 K and optimal local oscillator (LO) power is about 1 /spl mu/W for such mixers, which seems to be quite prospective for an SMM heterodyne imager. |
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Kharkov, Ukraine |
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The Fifth International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves (IEEE Cat. No.04EX828) |
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1487 |
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Gao, J. R.; Hajenius, M.; Baselmans, J. J. A.; Klapwijk, T. M.; de Korte, P. A. J.; Voronov, B.; Gol'tsman, G. |
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Title |
NbN hot electron bolometer mixers with superior performance for space applications |
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Conference Article |
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Year |
2004 |
Publication |
Proc. Int. workshop on low temp. electronics |
Abbreviated Journal |
Proc. Int. workshop on low temp. electronics |
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11-17 |
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Keywords |
NbN HEB mixers, applications |
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Noordwijk |
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Armandillo, E.; Leone, B. |
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International workshop on low temperature electronics- WOLTE 6 - Noordwijk |
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1496 |
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Yorke, Harold W.; Paine, Christopher G.; Bradford, Charles M.; Mark Dragovan; Nash, Al E.; Dooley, Jennifer A.; Lawrence, Charles R. |
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Title |
Thermal design trades for SAFIR architecture concepts |
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Conference Article |
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2004 |
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Proc. SPIE |
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5487 |
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1617-1624 |
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RPLAB @ s @ sun_shield_SAFIR_SPIE_2004 |
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340 |
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Alexandre Karpov; David Miller; Rice, Frank R.; Stern, Jeffrey A.; Bruce Bumble; LeDuc, Henry G.; Jonas Zmuidzinas |
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Title |
Low-noise SIS mixer for far-infrared radio astronomy |
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Conference Article |
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2004 |
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Proc. SPIE |
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5498 |
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616-621 |
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Glasgow, Scotland, UK |
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no |
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RPLAB @ s @ nt_SIS_550at1p2THz |
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353 |
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Author |
Klapwijk, T. M.; Barends, R.; Gao, J. R.; Hajenius, M.; Baselmans, J. J. A. |
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Title |
Improved superconducting hot-electron bolometer devices for the THz range |
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Conference Article |
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Year |
2004 |
Publication |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
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Volume |
5498 |
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Pages |
129-139 |
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Keywords |
HEB mixer distributed model, numerical model |
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Improved and reproducible heterodyne mixing (noise temperatures of 950 K at 2.5 THz) has been realized with NbN based hot-electron superconducting devices with low contact resistances. A distributed temperature numerical model of the NbN bridge, based on a local electron and a phonon temperature, has been used to understand the physical conditions during the mixing process. We find that the mixing is predominantly due to the exponential rise of the local resistivity as a function of electron temperature. |
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Invited talk, Recommended by Klapwijk |
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912 |
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