Records |
Author |
Baselmans, J. J. A.; Hajenius, M.; Gao, J. R.; Baryshev, A.; Kooi, J.; Klapwijk, T. M.; Voronov, B.; de Korte, P.; Gol'tsman, G. |
Title |
NbN hot electron bolometer mixers: sensitivity, LO power, direct detection and stability |
Type |
Journal Article |
Year |
2005 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
Volume |
15 |
Issue |
2 |
Pages |
484-489 |
Keywords |
HEB mixers, direct detection effect, stability, Allan variance |
Abstract |
We demonstrate that the performance of NbN lattice cooled hot electron bolometer mixers depends strongly on the interface quality between the bolometer and the contact structure. Both the receiver noise temperature and the gain bandwidth can be improved by a factor of 2 by cleaning the interface and adding an additional superconducting interlayer to the contact pad. Using this we obtain a double sideband receiver noise temperature of 950 K at 2.5 THz and 4.3 K, using a 0.4/spl times/4 /spl mu/m HEB mixer with a spiral antenna. At the same bias point, we obtain an IF gain bandwidth of 6 GHz. To comply with current demands on THz mixers for use in space based receivers we reduce the device size to 0.15/spl times/1 /spl mu/m and use a twin slot antenna. We report measurements of the noise temperature, LO power requirement, stability and the direct detection effect, using a mixer with a 1.6 THz twin slot antenna and a 1.462 THz solid state LO source with calibrated output power. |
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ISSN |
1051-8223 |
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Serial |
546 |
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Author |
Gao, J. R.; Hajenius, M.; Baselmans, J. J. A.; Klapwijk, T. M.; de Korte, P. A. J.; Voronov, B.; Gol'tsman, G. |
Title |
NbN hot electron bolometer mixers with superior performance for space applications |
Type |
Conference Article |
Year |
2004 |
Publication |
Proc. Int. workshop on low temp. electronics |
Abbreviated Journal |
Proc. Int. workshop on low temp. electronics |
Volume |
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Issue |
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Pages |
11-17 |
Keywords |
NbN HEB mixers, applications |
Abstract |
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Thesis |
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Publisher |
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Place of Publication |
Noordwijk |
Editor |
Armandillo, E.; Leone, B. |
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Conference |
International workshop on low temperature electronics- WOLTE 6 - Noordwijk |
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no |
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Serial |
1496 |
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Author |
Maslennikov, S.; Vachtomin, Yu.; Antipov, S.; Smirnov, K.; Kaurova, N.; Grishina, E.; Voronov, B.; Gol'tsman, G. |
Title |
NbN HEB mixers for frequencies of 2.5 and 3.8 THz |
Type |
Conference Article |
Year |
2004 |
Publication |
Proc. Tenth All-Russian sceintific conference of student-physicists and young sceintists (VNKSF-10) |
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Place of Publication |
Moscow |
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RPLAB @ s @ qoheb_vnksf10_2004 |
Serial |
349 |
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Author |
Tretyakov, I. V.; Ryabchun, S. A.; Maslennikov, S. N.; Finkel, M. I.; Kaurova, N. S.; Seleznev, V. A.; Voronov, B. M.; Gol'tsman, G.N. |
Title |
NbN HEB mixer: fabrication, noise temperature reduction and characterization |
Type |
Conference Article |
Year |
2008 |
Publication |
Proc. Basic problems of superconductivity |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
HEB, mixer, noise temperature, conversion gain bandwidth |
Abstract |
We demonstrate that in the terahertz region superconducting hot-electron mixers offer the lowest noise temperature, opening the possibility of using HTS's in the future to fabricate these devices. Specifically, a noise temperature of 950 K was measured for the receiver operating at 2.5 THz with a NbN HEB mixer, and a gain bandwidth of 6 GHz was measured at 300 GHz near Tc for the same mixer. |
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Moscow-Zvenigorod |
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no |
Call Number |
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Serial |
591 |
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Author |
Maslennikov, S.; Antipov, S.; Shishkov, A.; Svechnikov, S.; Voronov, B.; Smirnov, K.; Kaurova, N.; Drakinski, V.; Gol'tsman, G. |
Title |
NbN HEB mixer noise temperature measurements with hot/cold load mounted inside the helium cryostat at 300 GHz |
Type |
Conference Article |
Year |
2002 |
Publication |
Proc. Int. Student Seminar on Microwave Appl. of Novel Physical Phenomena supported by IEEE |
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Volume |
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Issue |
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Pages |
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Publisher |
LETI |
Place of Publication |
St.-Petersburg |
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Call Number |
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Serial |
324 |
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