| Records |
| Author |
Uzawa, Y.; Miki, S.; Wang, Z.; Kawakami, A.; Kroug, M.; Yagoubov, P.; Kollberg, E. |
| Title |
Performance of a quasi-optical NbN hot-electron bolometric mixer at terahertz frequencies |
Type |
Journal Article |
| Year |
2002 |
Publication |
Superconductor Science and Technology |
Abbreviated Journal |
Supercond. Sci. Technol. |
| Volume |
15 |
Issue |
1 |
Pages |
141-145 |
Keywords  |
HEB, mixer |
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| ISSN |
0953-2048 |
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no |
| Call Number |
RPLAB @ s @ |
Serial |
548 |
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| Author |
Burke, P. J.; Schoelkopf, R. J.; Prober, D. E.; Skalare, A.; Karasik, B. S.; Gaidis, M. C.; McGrath, W. R.; Bumble, B.; LeDuc, H. G. |
| Title |
Mixing and noise in diffusion and phonon cooled superconducting hot-electron bolometers |
Type |
Journal Article |
| Year |
1999 |
Publication |
J. Appl. Phys. |
Abbreviated Journal |
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| Volume |
85 |
Issue |
3 |
Pages |
1644-1653 |
| Keywords |
HEB, mixer |
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| ISSN |
0021-8979 |
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no |
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Serial |
556 |
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| Author |
Ryabchun, Sergey; Tong, Cheuk-Yu Edward; Blundell, Raymond; Gol'tsman, Gregory |
| Title |
Stabilization scheme for hot-electron bolometer receivers using microwave radiation |
Type |
Journal Article |
| Year |
2009 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
19 |
Issue |
1 |
Pages |
14-19 |
| Keywords |
HEB, mixer, Allan variance, stabilization, radiometer equation |
| Abstract |
We present the results of a stabilization scheme for terahertz receivers based on NbN hot-electron bolometer (HEB) mixers that uses microwave radiation with a frequency much lower than the gap frequency of NbN to compensate for mixer current fluctuations. A feedback control loop, which actively controls the power level of the injected microwave radiation, has successfully been implemented to stabilize the operating point of the HEB mixer. This allows us to increase the receiver Allan time to 10 s and also improve the temperature resolution of the receiver by about 30% in the total power mode of operation. |
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| ISSN |
1051-8223 |
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no |
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RPLAB @ lobanovyury @ |
Serial |
559 |
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| Author |
Ryabchun, S. A.; Tretyakov, I. V.; Finkel, M. I.; Maslennikov, S. N.; Kaurova, N. S.; Seleznev, V. A.; Voronov, B. M.; Gol'tsman, G. N. |
| Title |
NbN phonon-cooled hot-electron bolometer mixer with additional diffusion cooling |
Type |
Conference Article |
| Year |
2009 |
Publication |
Proc. 20th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 20th ISSTT |
| Volume |
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Issue |
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Pages |
151-154 |
| Keywords |
HEB, mixer, bandwidth, noise temperatue, in-situ contacts, in situ contacts |
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Place of Publication |
Charlottesville, USA |
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no |
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Serial |
590 |
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| Author |
Cherednichenko, S.; Kollberg, E.; Angelov, I.; Drakinskiy, V.; Berg, T.; Merkel, H. |
| Title |
Effect of the direct detection effect on the HEB receiver sensitivity calibration |
Type |
Conference Article |
| Year |
2005 |
Publication |
Proc. 16th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
235-239 |
| Keywords |
HEB, mixer, direct detection effect |
| Abstract |
We analyze the scale of the HEB receiver sensitivity calibration error caused by the so called “direct detection effect”. The effect comes from changing of the HEB parameters when whey face the calibration loads of different temperatures. We found that for HIFI Band 6 mixers (Herschel Space Observatory) the noise temperature error is of the order of 8% for 300K/77K loads (lab receiver) and 2.5% for 100K/10K loads (in HIFI). Using different approach we also predict that with an isolator between the mixer and the low noise amplifiers the error can be much smaller. |
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Place of Publication |
Göteborg, Sweden |
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no |
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Serial |
360 |
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