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Author |
Рябчун, С. А. |
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Title |
Широкополосные высокостабильные терагерцовые смесители на горячих электронах из тонких сверхпроводниковых пленок NbN |
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Year |
2009 |
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М. МПГУ |
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98 |
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Keywords |
HEB, mixer, terahertz, THz, stability, Allan variance, conversion bandwidth, in-situ technique, Au contacts |
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Ph.D. thesis |
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598 |
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Baselmans, J. J. A.; Baryshev, A.; Reker, S. F.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; Vahtomin, Yu.; Maslennikov, S.; Antipov, S.; Voronov, B.; Gol'tsman, G. |
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Title |
Direct detection effect in small volume hot electron bolometer mixers |
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Journal Article |
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Year |
2005 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
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86 |
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16 |
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163503 (1 to 3) |
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Keywords |
HEB, mixer, direct detection effect |
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Abstract |
We measure the direct detection effect in a small volume (0.15μm×1μm×3.5nm)(0.15μm×1μm×3.5nm) quasioptical NbN phonon cooled hot electronbolometermixer at 1.6THz1.6THz. We find that the small signal sensitivity of the receiver is underestimated by 35% due to the direct detection effect and that the optimal operating point is shifted to higher bias voltages when using calibration loads of 300K300K and 77K77K. Using a 200GHz200GHzbandpass filter at 4.2K4.2K the direct detection effect virtually disappears. This has important implications for the calibration procedure of these receivers in real telescope systems. |
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377 |
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Author |
Гольцман, Г.Н.; Лудков, Д.Н. |
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Title |
Сверхпроводниковые смесители на горячих электронах терагерцового диапазона и их применение в радиоастрономии |
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Journal Article |
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2003 |
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Изв. высших учебных заведений. Радиофизика |
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46 |
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8/9 |
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HEB, mixers |
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russian |
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RPLAB @ s @ |
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473 |
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Uzawa, Y.; Miki, S.; Wang, Z.; Kawakami, A.; Kroug, M.; Yagoubov, P.; Kollberg, E. |
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Title |
Performance of a quasi-optical NbN hot-electron bolometric mixer at terahertz frequencies |
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Journal Article |
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2002 |
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Superconductor Science and Technology |
Abbreviated Journal |
Supercond. Sci. Technol. |
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15 |
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1 |
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141-145 |
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Keywords |
HEB, mixer |
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0953-2048 |
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RPLAB @ s @ |
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548 |
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Author |
Cherednichenko, S.; Drakinskiy, V. |
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Title |
Low noise hot-electron bolometer mixers for terahertz frequencies |
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Journal Article |
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2008 |
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J. Low Temp. Phys. |
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J. Low Temp. Phys. |
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151 |
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1-2 |
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575-579 |
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Keywords |
HEB, mixer, gain bandwidth, MgB2 |
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Hot-electron bolometer (HEB) mixers are used in many low noise heterodyne radio astronomical receivers. Their noise temperature is at the level of 10–15 times the quantum limit. However, their gain bandwidth is a serious limiting factor. Here we review the state of the art of the HEB mixers gain bandwidth for different materials and substrates. We compare the gain bandwidth of HEB mixers made on bulk substrates and thin membranes. Finally, results for MgB2 thin films for broadband HEB mixers are discussed. |
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0022-2291 |
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RPLAB @ lobanovyury @ |
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553 |
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