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Vystavkin, A. N. |
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Title |
Estimation of noise equivalent power and design analysis of an andreev reflection hot-electron microbolometer for submillimeter radioastronomy |
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Journal Article |
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1999 |
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Rus. J. Radio Electron. |
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Rus. J. Radio Electron. |
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10 |
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HEB, detector, bolometer |
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Results of theoretical estimations and measurements of characteristics of an Andreev reflection hot-electron microbolometer for submillimeter radioastronomy made by different researchers are reviewed and analysed. Peculiarities and characteristics of the microbolometers using two types of microthermometer for measurement of the electron temperature increment under influence of the radiation: the SIN-junction and the transition-edge sensor (TES) with electrothermal feedback – are compared. Advantages of the microbolometer with the second type of the microthermometer when the TES is used simultaneously as the absorber of radiation are shown. Methods of achievement of the best noise equivalent power of the microbolometer in such version as well as methods of the matching the microbolometer with the incident radiation flow using planar antennas and with the channel of output signal measurement using a SQUID-picoammeter are considered. |
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496 |
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Author |
Масленников, Сергей Николаевич |
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Title |
Смесители на эффекте электронного разогрева для терагерцового и инфракрасного диапазонов |
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2007 |
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М. МПГУ |
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HEB, detector, mixer, terahertz, THz, infrared, IR, direct detection effect, conversion loss |
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Ph.D. thesis |
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Russian |
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481 |
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Ryabchun, Sergey; Tong, Cheuk-Yu Edward; Blundell, Raymond; Gol'tsman, Gregory |
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Title |
Stabilization scheme for hot-electron bolometer receivers using microwave radiation |
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2009 |
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IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
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19 |
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1 |
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14-19 |
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HEB, mixer, Allan variance, stabilization, radiometer equation |
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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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1051-8223 |
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RPLAB @ lobanovyury @ |
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559 |
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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. |
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NbN phonon-cooled hot-electron bolometer mixer with additional diffusion cooling |
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2009 |
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Proc. 20th Int. Symp. Space Terahertz Technol. |
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Proc. 20th ISSTT |
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151-154 |
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HEB, mixer, bandwidth, noise temperatue, in-situ contacts, in situ contacts |
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Charlottesville, USA |
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590 |
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Cherednichenko, S.; Kollberg, E.; Angelov, I.; Drakinskiy, V.; Berg, T.; Merkel, H. |
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Effect of the direct detection effect on the HEB receiver sensitivity calibration |
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2005 |
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Proc. 16th Int. Symp. Space Terahertz Technol. |
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235-239 |
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HEB, mixer, direct detection effect |
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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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Göteborg, Sweden |
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360 |
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