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Gao, J. R.; Hajenius, M.; Baselmans, J. J. A.; Yang, Z. Q.; Baryshev, A. M.; Barends, R.; Klapwijk, T. M.; Voronov, B.; Gol'tsman, G.; Callaos, N. |
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Title |
Twin-slot antenna coupled NbN hot electron bolometer mixers for space applications |
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Conference Article |
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Year |
2005 |
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Proc. 9-th WMSCI |
Abbreviated Journal |
Proc. 9-th WMSCI |
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9 |
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148-153 |
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NbN HEB mixers |
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International Institute of Informatics and Systemics |
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9806560639, 9789806560635 |
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9th World Multi-Conference on Systemics, Cybernetics and Informatics |
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1480 |
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Jiang, L.; Zhang, W.; Yao, Q. J.; Lin, Z. H.; Li, J.; Shi, S. C.; Svechnikov, S. I.; Vachtomin, Y. B.; Antipov, S. V.; Voronov, B. M.; Kaurova, N. S.; Gol'tsman, G. N. |
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Title |
Characterization of a quasi-optical NbN superconducting hot-electron bolometer mixer |
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Conference Article |
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Year |
2005 |
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Proc. PIERS |
Abbreviated Journal |
Proc. PIERS |
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1 |
Issue |
5 |
Pages |
587-590 |
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Keywords |
NbN HEB mixers |
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Abstract |
In this paper, we report the performance of a quasi-optical NbN superconducting HEB (hot electron bolome-ter) mixer measured at 500 GHz. The quasi-optical NbN superconducting HEB mixer is cryogenically cooled bya 4-K close-cycled refrigerator. Its receiver noise temperature and conversion gain are thoroughly investigatedfor different LO pumping levels and dc biases. The lowest receiver noise temperature is found to be approxi-mately 1200 K, and reduced to about 445 K after correcting theloss of the measurement system. The stabilityof the mixer’s IF output power is also demonstrated. |
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Hangzhou, China |
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1931-7360 |
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Progress In Electromagnetics Research Symposium |
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1482 |
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Meledin, D. V.; Marrone, D. P.; Tong, C.-Y. E.; Gibson, H.; Blundell, R.; Paine, S. N.; Papa, D.C.; Smith, M.; Hunter, T. R.; Battat, J.; Voronov, B.; Gol'tsman, G. |
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Title |
A 1-THz superconducting hot-electron-bolometer receiver for astronomical observations |
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Journal Article |
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Year |
2004 |
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IEEE Trans. Microwave Theory Techn. |
Abbreviated Journal |
IEEE Trans. Microwave Theory Techn. |
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Volume |
52 |
Issue |
10 |
Pages |
2338-2343 |
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Keywords |
NbN HEB mixer, applications |
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In this paper, we describe a superconducting hot-electron-bolometer mixer receiver developed to operate in atmospheric windows between 800-1300 GHz. The receiver uses a waveguide mixer element made of 3-4-nm-thick NbN film deposited over crystalline quartz. This mixer yields double-sideband receiver noise temperatures of 1000 K at around 1.0 THz, and 1600 K at 1.26 THz, at an IF of 3.0 GHz. The receiver was successfully tested in the laboratory using a gas cell as a spectral line test source. It is now in use on the Smithsonian Astrophysical Observatory terahertz test telescope in northern Chile. |
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0018-9480 |
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1484 |
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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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Year |
2004 |
Publication |
Proc. 5-th MSMW |
Abbreviated Journal |
Proc. 5-th MSMW |
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Volume |
2 |
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Pages |
558-560 |
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Keywords |
AlGaAs/GaAs HEB mixers |
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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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Author |
Cherednichenko, S.; Khosropanah, P.; Berg, T.; Merkel, H.; Kollberg, E.; Drakinskiy, V.; Voronov, B.; Gol’tsman, G. |
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Title |
Optimization of HEB mixer for the Herschel Space Observatory |
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Abstract |
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Year |
2004 |
Publication |
Proc. 15th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 15th Int. Symp. Space Terahertz Technol. |
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Pages |
16 |
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Keywords |
NbN HEB mixers, applications |
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A mixer development for the HIFI instrument of the Herschel Space Observatory has come to the final stage. In our paper and conference presentation we will describe the most important details of the Band 6 Low and High Mixer Unit design. Special attention will be given to the optimization of the hot- electron bolometer mixer chip, which is based on 3.5nm NbN superconducting film on silicon. As the HEB’s local oscillator power requirements depend on the bolometer size, we have compared mixer noise temperature for different bolometer width- to- length ratio. A trade- off between mixer performance and local oscillator power requirements results in the mixer units equipped with optimized mixer chips, providing the largest coverage of the Band6 RF band with the lowest possible receiver noise. A short account of the beam pattern measurements of Band6 mixers will be given as well. |
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1490 |
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