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Author |
Калмыков, Б.; Фридкин, Г. |
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Title |
Сольфеджио. Часть 2. Двухголосие |
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Year |
1970 |
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Keywords |
children, music, piano, school, learning |
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Музыка |
Place of Publication |
Москва |
Editor |
Дурандина, Е. |
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no |
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1844 |
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Author |
Czerny, Carl; Germer, Heinrich |
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Title |
Selected pianoforte-studies. Edition nr. 300 |
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Year |
1900 |
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children, music, piano, learning, school |
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Hansen |
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no |
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1845 |
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Author |
Kroug, M.; Yagoubov, P.; Gol'tsman, G.; Kollberg, E. |
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Title |
NbN quasioptical phonon cooled hot electron bolometric mixers at THz frequencies |
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Conference Article |
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Year |
1997 |
Publication |
Inst. Phys. Conf. Ser. |
Abbreviated Journal |
Inst. Phys. Conf. Ser. |
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Volume |
1 |
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Pages |
405-408 |
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Keywords |
NbN HEB mixers |
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Address |
Veldhoven |
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Place of Publication |
Bristol |
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ISSN |
0951-3248 |
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3rd Eur. Conf. on Applied Superconductivity |
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no |
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Serial |
1600 |
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Author |
Merkel, H. F.; Yagoubov, P. A.; Kroug, M.; Khosropanah, P.; Kollberg, E. L.; Gol’tsman, G. N.; Gershenzon, E. M. |
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Title |
Noise temperature and absorbed LO power measurement methods for NbN phonon-cooled hot electron bolometric mixers at terahertz frequencies |
Type |
Conference Article |
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Year |
1998 |
Publication |
Proc. 28th European Microwave Conf. |
Abbreviated Journal |
Proc. 28th European Microwave Conf. |
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Volume |
1 |
Issue |
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Pages |
294-299 |
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Keywords |
NbN HEB mixers |
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Abstract |
In this paper the absorbed LO power requirements and the noise performance of NbN based phonon-cooled hot electron bolometric (HEB) quasioptical mixers are investigated for RF frequencies in the 0.55-1.1 range The minimal measured DSB noise temperatures are about 500 K at 640 GHz, 600 K at 750 GHz, 850 K at 910 GHz and 1250 K at 1.1 THz. The increase in noise temperature at 1.1THz is attributed to water absorption. The absorbed LO power is measured using a calorimetric approach. The results are subsequently corrected for lattice heating. These values are compared to results of a novel one dimensional hot spot mixer models and to a more traditional isotherm method which tends to underestimate the absorbed LO power for small bias powers. Typically a LO power between 50nW and 100nW is needed to pump the device to the optimal operating point. |
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28th European Microwave Conference |
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no |
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1580 |
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Author |
Chen, J.; Kang, L.; Jin, B. B.; Xu, W. W.; Wu, P. H.; Zhang, W.; Jiang, L.; Li, N.; Shi, S. C.; Gol'tsman, G. N. |
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Title |
Properties of terahertz superconducting hot electron bolometer mixers |
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Journal Article |
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Year |
2008 |
Publication |
Int. J. Terahertz Sci. Technol. |
Abbreviated Journal |
Int. J. Terahertz Sci. Technol. |
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Volume |
1 |
Issue |
1 |
Pages |
37-41 |
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Keywords |
NbN HEB mixers, noise temperature |
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Abstract |
A quasi-optical superconducting niobium nitride (NbN) hot electron bolometer (HEB) mixer has been fabricated and measured in the terahertz (THz) frequency range of 0.5~2.52 THz. A receiver noise temperature of 2000 K at 2.52 THz has been obtained for the mixer without corrections. Also, the effect of a Parylene C anti-reflection (AR) coating on the silicon (Si) lens has been studied. |
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1417 |
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