| Records |
| Author |
Meledin, D.; Pantaleev, M.; Pavolotsky, A.; Risacher, C.; Belitsky, V.; Drakinskiy, V.; Cherednichenko, S. |
| Title |
Balanced waveguide HEB mixer for APEX 1.3 THz receiver |
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Conference Article |
| Year |
2005 |
Publication |
Proc. 16th Int. Symp. Space Terahertz Technol. |
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Göteborg, Sweden |
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RPLAB @ s @ wg_balanced |
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362 |
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Meledin, D.; Tong, C. Y.-E.; Blundell, R.; Kaurova, N.; Smirnov, K.; Voronov, B.; Gol'tsman, G. |
| Title |
The sensitivity and IF bandwidth of waveguide NbN hot electron bolometer mixers on MgO buffer layers over crystalline quartz |
Type |
Conference Article |
| Year |
2002 |
Publication |
Proc. 13th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 13th Int. Symp. Space Terahertz Technol. |
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Pages |
65-72 |
| Keywords |
waveguide NbN HEB mixers |
| Abstract |
We have developed and characterized waveguide phonon-cooled NbN Hot Electron Bolometer (FMB) mixers fabricated from a 3-4 nm thick NbN film deposited on a 200nm thick MgO buffer layer over crystalline quartz. Double side band receiver noise temperatures of 900-1050 K at 1.035 THz, and 1300-1400 K at 1.26 THz have been measured at an intermediate frequency of 1.5 GHz. The intermediate frequency bandwidth, measured at 0.8 THz LO frequency, is 3.2 GHz at the optimal bias point for low noise receiver operation. |
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Cambridge, MA, USA |
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Harvard university |
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326 |
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Blundell, R.; Barrett, J.; H. Gibson, C. Gotteib; Hunter, T.; Kimberk, R.; Leiker, S.; Marrone, D.; Meledin, D.; Paine, S.; Papa, D. C.; Plante, R.; Riddle, P.; Smith, M.; Sridharan, T.; Tong, C. E.; Wilson, R.; Diaz, M.; Bronfman, L.; May, J.; Otarola, A.; Radford, S. J. |
| Title |
Prospects for terahertz radio astronomy from Northean Chile |
Type |
Conference Article |
| Year |
2002 |
Publication |
Proc. 13th Int. Symp. Space Terahertz Technol. |
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Pages |
159-166 |
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Cambridge, MA, USA |
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Harvard university |
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RPLAB @ s @ meledin_2p5_stability |
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327 |
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Tong, C.-Y. E.; Meledin, D.; Loudkov, D.; Blundell, R.; Erickson, N.; Kawamura, J.; Mehdi, I.; Gol’tsman, G. |
| Title |
A 1.5 THz Hot-Electron Bolometer mixer operated by a planar diode based local oscillator |
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Conference Article |
| Year |
2003 |
Publication |
IEEE MTT-S Int. Microwave Symp. Digest |
Abbreviated Journal |
IEEE MTT-S Int. Microwave Symp. Digest |
| Volume |
2 |
Issue |
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Pages |
751-754 |
| Keywords |
waveguide NbN HEB mixers |
| Abstract |
We have developed a 1.5 THz superconducting NbN Hot-Electron Bolometer mixer. It is operated by an all-solid-state Local Oscillator comprising of a cascade of 4 planar doublers following an MMIC based W-band power amplifier. The threshold available pump power is estimated to be 1 /spl mu/W. |
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Philadelphia, PA, USA |
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no |
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Serial |
1516 |
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Meledin, D.; Tong, C. Y.-E.; Blundell, R.; Kaurova, N.; Smirnov, K.; Voronov, B.; Gol'tsman, G. |
| Title |
Study of the IF bandwidth of NbN HEB mixers based on crystalline quartz substrate with an MgO buffer layer |
Type |
Journal Article |
| Year |
2003 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
13 |
Issue |
2 |
Pages |
164-167 |
| Keywords |
NbN HEB mixer |
| Abstract |
In this paper, we present the results of IF bandwidth measurements on 3-4 nm thick NbN hot electron bolometer waveguide mixers, which have been fabricated on a 200-nm thick MgO buffer layer deposited on a crystalline quartz substrate. The 3-dB IF bandwidth, measured at an LO frequency of 0.81 THz, is 3.7 GHz at the optimal bias point for low noise receiver operation. We have also made measurements of the IF dynamic impedance, which allow us to evaluate the intrinsic electron temperature relaxation time and self-heating parameters at different bias conditions. |
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no |
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341 |
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