| Records |
| Author |
Jiang, L.; Li, J.; Zhang, W.; Yao, Q. J.; Lin, Z. L.; Shi, S. C.; Vachtomin, Y. B.; Antipov, S. V.; Svechnikov, S. I.; Voronov, B. M.; Goltsman, G. N. |
| Title |
Characterization of NbN HEB mixers cooled by a close-cycled 4 Kelvin refrigerator |
Type |
Journal Article |
| Year |
2005 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
15 |
Issue |
2 |
Pages |
511-513 |
| Keywords |
NbN HEB mixers |
| Abstract |
It is quite beneficial to operate superconducting hot-electron-bolometer (HEB) mixers with a close-cycled 4 Kelvin refrigerator for real applications such as astronomy and atmospheric research. In this paper, a phononcooled NbN HEB mixer (quasioptical type) is thoroughly characterized under such a cooling circumstance. The effects of mechanical vibration, electrical interference, and temperature fluctuation of a two-stage Gifford-McMahon 4 Kelvin refrigerator upon the characteristics of the phononcooled NbN HEB mixer are investigated in particular. Detailed measurement results are presented. |
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1558-2515 |
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1469 |
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| Author |
Baubert, J.; Salez, M.; Merkel, H.; Pons, P.; Cherednichenko, S.; Lecomte, B.; Drakinsky, V.; Goltsman, G.; Leone, B. |
| Title |
IF gain bandwidth of membrane-based NbN hot electron bolometers for SHAHIRA |
Type |
Journal Article |
| Year |
2005 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
15 |
Issue |
2 |
Pages |
507-510 |
| Keywords |
NbN HEB mixers, applications |
| Abstract |
SHAHIRA (Submm Heterodyne Array for HIgh-speed Radio Astronomy) is a project supported by the European Space Agency (ESA) and is designed to fly on the SOFIA observatory. A quasi-optic design has been chosen for 2.5/2.7 THz and 4.7 THz, for hydroxyde radical OH, deuterated hydrogen HD and neutral atomic oxygen OI lines observations. Hot electron bolometers (HEBs) have been processed on 1 /spl mu/m thick SiO/sub 2//Si/sub 3/N/sub 4/ stress-less membranes. In this paper we analyse the intermediate frequency (IF) gain bandwidth from the theoretical point of view, and compare it to measurements. |
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1558-2515 |
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1468 |
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Morozov, D. V.; Smirnov, K. V.; Smirnov, A. V.; Lyakhov, V. A.; Goltsman, G. N. |
| Title |
A millimeter-submillimeter phonon-cooled hot-electron bolometer mixer based on two-dimensional electron gas in an AlGaAs/GaAs heterostructure |
Type |
Journal Article |
| Year |
2005 |
Publication |
Semicond. |
Abbreviated Journal |
Semicond. |
| Volume |
39 |
Issue |
9 |
Pages |
1082-1086 |
| Keywords |
2D electron gas, AlGaAs/GaAs heterostructures, mixers |
| Abstract |
Experimental results obtained by studying the main characteristics of a millimeter-submillimeter wave mixer based on the hot-electron effect in a two-dimensional electron gas in a AlGaAs/GaAs heterostructure with a phonon-scattering cooling mechanism for charge carriers are reported. The gain bandwidth of the mixer is 4 GHz, the internal conversion losses are 13 dB, and the optimum local-oscillator power is 0.5 μW (for a mixer area of 1 μm2). It is shown that a millimeter-submillimeter-wave receiver with a noise temperature of 1900 K can be developed on the basis of a AlGaAs/GaAs mixer. This mixer also appears to be promising for use in array receiver elements. |
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1063-7826 |
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1463 |
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Bryerton, E.; Percy, R.; Bass, R.; Schultz, J.; Oluleye, O.; Lichtenberger, A.; Ediss, G. A.; Pan, S. K.; Goltsman, G. N. |
| Title |
Receiver measurements of pHEB beam lead mixers on 3-μm silicon |
Type |
Conference Article |
| Year |
2005 |
Publication |
Proc. 30th IRMMW / 13th THz |
Abbreviated Journal |
Proc. 30th IRMMW / 13th THz |
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Issue |
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Pages |
271-272 |
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| Abstract |
We report on receiver noise measurement results of phonon-cooled HEB beam lead mixers on 3 μm thick silicon. This type of ultra-thin mixer chip with integrated beam leads allows easy assembly into a block and holds great promise for array integration. Receiver measurements from 600-720 GHz are presented with a minimum noise temperature of 500 K at 666 GHz. These results verify the mixer performance of the SOI processing techniques allowing for further design and integration of SOI pHEB mixers in receivers operating above 1 THz. |
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Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics |
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no |
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1460 |
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| Author |
Goltsman, G. N. |
| Title |
Submillimeter superconducting receivers for astronomy, atmospheric studies and other applications |
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Abstract |
| Year |
2006 |
Publication |
31nd IRMW / 14th ICTE |
Abbreviated Journal |
31nd IRMW / 14th ICTE |
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177 |
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Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics |
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no |
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1443 |
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