| Records |
Author  |
Kardashev, N. S.; Andreyanov, V. V.; Buyakas, V. I.; Vinogradov, I. S.; Gvamichava, A. S.; Kotik, A. I.; Kurt, V. G.; Lazareva, G. S.; Mironova, E. N.; Myshonkova, N. V.; Slysh, V. I.; Trubnikov, A. G.; Troitskiy, V. F.; Puryaev, D. T.; Usyukin, V. I. |
| Title |
The Millimetron project |
Type |
Conference Article |
| Year |
2000 |
Publication |
Proc. Lebedev Phys. Institute |
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| Volume |
228 |
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RPLAB @ s @ MILLIMETRON_first |
Serial |
308 |
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Karpov, A.; Miller, D.; Rice, F.; Zmuidzinas, J.; Stern, J. A.; Bumble, B.; LeDuc, H. G. |
| Title |
Low noise 1.2 THz SIS receiver |
Type |
Conference Article |
| Year |
2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
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Pages |
21-22 |
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San Diego, CA, USA |
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Jet Propulsion Laboratory, California Inst.it.u.t.e of Technology |
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RPLAB @ s @ sis_650K_at_1p13THz |
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316 |
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Karpov, A.; Miller, D.; Stern, J. A.; Bumble, B.; LeDuc, H. G.; Zmuidzinas, J. |
| Title |
Low noise NbTiN 1.25 THz SIS mixer for Herschel Space Observatory |
Type |
Conference Article |
| Year |
2005 |
Publication |
Proc. 16th Int. Symp. Space Terahertz Technol. |
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Pages |
450 |
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Göteborg, Sweden |
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no |
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RPLAB @ s @ nt_SIS_760at1p25THz |
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359 |
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Karpov, A.; Miller, D.; Stern, J. A.; Bumble, B.; LeDuc, H. G.; Zmuidzinas, J. |
| Title |
Broadband SIS mixer for 1 THz Band |
Type |
Conference Article |
| Year |
2009 |
Publication |
Proc. 20th Int. Symp. Space Terahertz Technol. |
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Pages |
35-35 |
| Keywords |
SIS mixer, noise temperature |
| Abstract |
We report the development of a low noise and broadband SIS mixer aimed for 1 THz channel of the Caltech Airborne Submillimeter Interstellar Medium Investigations Receiver (CASIMIR), designed for the Stratospheric Observatory for Far Infrared Astronomy, (SOFIA). The mixer uses an array of 0.24 µm² Nb/Al-AlN/NbTiN SIS junctions with critical current density of 30-50 KA/cm². The junctions are shaped in order to optimize the suppression of the Josephson DC currents. We are using a double slot planar antenna to couple the mixer chip with the telescope beam. The RF matching microcircuit is made using Nb and gold films. The mixer IF circuit is designed to cover 4 – 8 GHz band. A test receiver with the new mixer has a low noise operation in a 0.87 – 1.12 THz band. The minimum DSB receiver noise measured at 1 THz is 260 K (Y=1.64), apparently the lowest reported up to date. The receiver noise corrected for the loss in the LO injection beam splitter and in the cryostat window is 200 K. The combination of a broad operation band of about 250 GHz with a low receiver noise is making the new mixer a useful element for application at SOFIA. We will discuss the prospective of a further improvement of the sensitivity and extension of the upper frequency of operation of SIS mixer. |
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614 |
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Kawamura, J. H.; Tong, C.-Y.E.; Blundell, R.; Cosmo Papa, D.; Hunter, T. R.; Gol'tsman, G.; Cherednichenko, S.; Voronov, B.; Gershenzon, E. |
| Title |
An 800 GHz NbN phonon-cooled hot-electron bolometer mixer receiver |
Type |
Journal Article |
| Year |
1999 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
9 |
Issue |
2 |
Pages |
3753-3756 |
| Keywords |
NbN HEB mixers |
| Abstract |
We describe a heterodyne receiver developed for astronomical applications to operate in the 350 /spl mu/m atmospheric window. The waveguide receiver employs a superconductive NbN phonon-cooled hot-electron bolometer mixer. The double sideband receiver noise temperature closely follows 1 kGHz/sup -1/ across 780-870 GHz, with the intermediate frequency centered at 1.4 GHz. The conversion loss is about 15 dB. The receiver was installed for operation at the University of Arizona/Max Planck Institute for Radio Astronomy Submillimeter Telescope facility. The instrument was successfully used to conduct test observations of a number of celestial sources in a number of astronomically important spectral lines. |
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1051-8223 |
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no |
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288 |
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