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Kerr, A. R.; Feldman, M. J.; Pan, S.-K. |
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Title |
Receiver noise temperature, the quantum noise limit, and the role of the zero-point fluctuations |
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Journal Article |
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Year |
1996 |
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Electronics division internal report NO. 304 |
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1-10 |
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RPLAB @ atomics90 @ |
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947 |
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Author |
Gousev, Yu. P.; Semenov, A. D.; Pechen, E. V.; Varlashkin, A. V.; Nebosis, R. S.; Renk K. F |
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Title |
Coupling of terahertz radiation to a high-Т(с) superconducting hot electron bolometer mixer |
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Journal Article |
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Year |
1996 |
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Appl. Phys. Lett., |
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Volume |
69 |
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Pages |
691-693 |
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We report on efficient coupling of THz radiation to a high-T(c) superconducting hot electron bolometer that is suitable for heterodyne detection. Our quasioptical system consisted of a planar self-complementary spiral antenna on a dielectric substrate clamped to an extended hyperhemispherical lens. The antenna was integrated into a co-planar line for broadband intermediate frequency matching. Measurements in the homodyne regime at a frequency of 2.5 THz showed a radiation pattern with a beam width of 1° and a coupling efficiency of 0.1. We measured, at an intermediate frequency of 1.5 GHz, an output noise temperature of'160 K and estimated for the device, operated in the heterodyne regime, a system noise temperature of 30 000 K. We also discuss possibilities of significant improvement of the sensitivity. |
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RPLAB @ atomics90 @ |
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958 |
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Author |
Karasik, B. S.; Elantiev, A. I. |
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Title |
Noise temperature limit of a superconducting hot-electron bolometer mixer |
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Journal Article |
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Year |
1996 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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68 |
Issue |
6 |
Pages |
853-855 |
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Keywords |
HEB mixer noise temperature, Johnson noise, thermal fluctuation noise, noise bandwidth |
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0003-6951 |
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260 |
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Author |
Karasik, B. S.; Il'in, K. S.; Pechen, E. V.; Krasnosvobodtsev, S. I. |
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Title |
Diffusion cooling mechanism in a hot-electron NbC microbolometer mixer |
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Journal Article |
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Year |
1996 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
68 |
Issue |
16 |
Pages |
2285-2287 |
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Keywords |
HEB mixer, diffusion cooling channel, diffusion channel |
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0003-6951 |
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no |
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262 |
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Author |
van de Stadt, H. |
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Title |
An improved 1 THz waveguide mixer |
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Conference Article |
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Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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536 |
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Charlottesville, Virginia, USA |
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Probably other authors exist. |
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263 |
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Author |
Belitsky, V. Yu.; Kollberg, E. L. |
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Title |
Tuning circuit for NbN SIS mixer |
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Conference Article |
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Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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234 |
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Charlottesville, Virginia, USA |
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no |
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264 |
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Author |
Yagubov, P.; Gol'tsman, G.; Voronov, B.; Seidman, L.; Siomash, V.; Cherednichenko, S.; Gershenzon, E. |
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Title |
The bandwidth of HEB mixers employing ultrathin NbN films on sapphire substrate |
Type |
Conference Article |
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Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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Proc. 7th Int. Symp. Space Terahertz Technol. |
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290-302 |
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NbN HEB mixers, fabrication process |
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Abstract |
We report on some unusual features observed during fabrication of ultrathin NbN films with high Tc. The films were used to fabricate HEB mixers, which were evaluated for IF bandwidth measurements at 140 GHz. Ultrathin films were fabricated using reactive dc magnetron sputtering with a discharge current source. Reproducible parameters of the films are assured keeping constant the difference between the discharge voltage in pure argon, and in a gas mixture, for the same current. A maximum bandwidth of 4 GHz at optimal LO and dc bias was obtained for mixer chip based on NbN film 35 A thick with Tc = 11 K. |
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Charlottesville, Virginia, USA |
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no |
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266 |
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Author |
Ellison, B. N.; Maddison, B. J.; Matheson, D. N.; Oldfield, M. L.; Marazita, S.; Crowe, T. W.; Maaskant, P.; Kelly, W. M. |
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Title |
First results for a 2.5 THz Schottky diode waveguide mixer |
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Conference Article |
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Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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494 |
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Charlottesville, Virginia, USA |
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no |
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265 |
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Author |
Betz, A. L.; Borejko, R. T. |
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Title |
A practical Schottky mixer for 5 THz |
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Conference Article |
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1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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503 |
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269 |
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Carlstrom, John E.; Jonas Zmuidzinas |
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Millimeter and Submillimeter Techniques |
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1996 |
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848 |
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Oxford University Press Inc |
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New York |
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Review of radio science 1993–1996 |
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34 |
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Published for the International Union of Radio Science |
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268 |
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Author |
Hesler, J. L.; Hall, W. R.; Crowe, T. W.; Weikle, R. M.; Bradley, R. F.; Pan, Shing-Kuo |
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Title |
Submm wavelenght waveguide mixers using planar Schottky barier diods |
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Conference Article |
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1996 |
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Proc. 7th Int. Symp. Space Terahertz Technol. |
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462 |
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270 |
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Tong, C. Y. E.; Blundell, R.; Bumble, B.; Stern, J. A.; LeDuc, H. G. |
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Title |
Sub-Millimeter distributed quasiparticle receiver employing a non-Linear transmission line |
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1996 |
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Proc. 7th Int. Symp. Space Terahertz Technol. |
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47 |
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271 |
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Tong, C. Y. E.; Blundell, R.; Paine, S.; Papa, D. C.; Kawamura, J.; Stern, J.; LeDuc, H. G. |
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Title |
Design and characterization of a 250-350 GHz fixed-tuned superconductor-insulator-insulator receiver |
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1996 |
Publication |
IEEE Trans. Microw. Theory Techn. |
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44 |
Issue |
9 |
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1548-1556 |
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273 |
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Author |
Tinkham, Mikhael |
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Title |
Introduction to superconductivity |
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1996 |
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McGraw-Hill |
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superconductivity, BCS, GL |
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USA |
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896 |
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Currie, N. C.; Demma, F. J.; Ferris Jr., D. D.; Kwasowsky, B. R.; McMillan, R. W.; Wicks, M. C. |
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Title |
Infrared and millimeter-wave sensors for military special operations and law enforcement applications |
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1996 |
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Int. J. Infrared and Millimeter Waves |
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17 |
Issue |
7 |
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1117-1138 |
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HgCdTe |
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0195-9271 |
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466 |
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