Records |
Author |
Kawamura, Jonathan; Blundell, Raymond; Tong, C.-Y. Edward; Papa, D. Cosmo; Hunter, Todd R.; Gol'tsman, Gregory; Cherednichenko, Sergei; Voronov, Boris; Gershenzon, Eugene |
Title |
First light with an 800 GHz phonon-cooled HEB mixer receiver |
Type |
Conference Article |
Year |
1998 |
Publication |
Proc. 9th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 9th Int. Symp. Space Terahertz Technol. |
Volume |
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Issue |
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Pages |
35-43 |
Keywords |
HEB, mixer, LO power, local oscillator power, saturation effect, dynamic range |
Abstract |
Phonon-cooled superconductive hot-electron bolometric (HEB) mixers are incorporated in a waveguide receiver designed to operate near 800 Gliz. The mixer elements are thin-film nio- bium nitride microbridges with dimensions of 4 nm thickness, 0.2 to 0.3 p.m in length and 2 jun in width. At 780 GHz the best receiver noise temperature is 840 K (DSB). The mixer IF bandwidth is 2.0 GHz, the absorbed LO power is —0.1 1.1W. A fixed-tuned version of the re- ceiver was installed at the Submillimeter Telescope Observatory on Mt. Graham, Arizona, to conduct astronomical observations. These observations represent the first time that a receiver incorporating any superconducting HEB mixer has been used to detect a spectral line of celes- tial origin. |
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Pasadena, California, USA |
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572 |
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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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1051-8223 |
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RPLAB @ lobanovyury @ |
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559 |
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Semenov, Alexei D.; Richter, Heiko; Hubers, Heinz-Wilhelm; Gunther, Burghardt.; Smirnov, Andrey; Il'in, Konstantin S.; Siegel, Michael; Karamarkovic, Jugoslav P. |
Title |
Terahertz performance of integrated lens antennas with a hot-electron bolometer |
Type |
Journal Article |
Year |
2007 |
Publication |
IEEE Trans. Microw. Theory Techn. |
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Volume |
55 |
Issue |
2 |
Pages |
239-247 |
Keywords |
HEB, lens antenna |
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0018-9480 |
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538 |
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Yagoubov, P.; Hübers, H.-W.; Gol’tsman, G.; Semenov, A.; Gao, J.; Hoogeveen, R.; de Graauw, T.; Birk, M.; Selig, A.; de Korte, P. |
Title |
Hot-electron bolometer mixers – technology for far-infrared heterodyne instruments in future atmospheric chemistry missions |
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Conference Article |
Year |
2001 |
Publication |
Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space |
Abbreviated Journal |
Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space |
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57-69 |
Keywords |
HEB mixers |
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Delmenhorst |
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Logos-Verlag |
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Buehler, S.; Berlin |
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3-89722-700-2 |
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International Symposium on Submillimeter Wave Earth Observation from Space, ISSMWEOS01 |
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1549 |
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Kroug, M.; Cherednichenko, S.; Choumas, M.; Merkel, H.; Kollberg, E.; Hübers, H.-W.; Richter, H.; Loudkov, D.; Voronov, B.; Gol'Tsman, G. |
Title |
HEB quasi-optical heterodyne receiver for THz frequencies |
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Conference Article |
Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
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Issue |
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Pages |
244-252 |
Keywords |
HEB mixer, NbN, MgO, conversion gain bandwidth, noise temperature |
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San Diego, CA, USA |
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319 |
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