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Betz, A. L.; Borejko, R. T. |
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Title |
A practical Schottky mixer for 5 THz |
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1996 |
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Proc. 7th Int. Symp. Space Terahertz Technol. |
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503 |
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269 |
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Semenov, Alexei; Richter, Heiko; Smirnov, Konstantin; Voronov, Boris; Gol'tsman, Gregory; Hübers, Heinz-Wilhelm |
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Title |
The development of terahertz superconducting hot-electron bolometric mixers |
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2004 |
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Supercond. Sci. Technol. |
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Supercond. Sci. Technol. |
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17 |
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5 |
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436-439 |
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NbN HEB mixers |
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We present recent advances in the development of NbN hot-electron bolometric (HEB) mixers for flying terahertz heterodyne receivers. Three important issues have been addressed: the quality of the source NbN films, the effect of the bolometer size on the spectral properties of different planar feed antennas, and the local oscillator (LO) power required for optimal operation of the mixer. Studies of the NbN films with an atomic force microscope indicated a surface structure that may affect the performance of the smallest mixers. Measured spectral gain and noise temperature suggest that at frequencies above 2.5 THz the spiral feed provides better overall performance than the double-slot feed. Direct measurements of the optimal LO power support earlier estimates made in the framework of the uniform mixer model. |
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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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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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Kroug, M.; Yagoubov, P.; Gol'tsman, G.; Kollberg, E. |
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Title |
NbN quasioptical phonon cooled hot electron bolometric mixers at THz frequencies |
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Conference Article |
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1997 |
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Inst. Phys. Conf. Ser. |
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Inst. Phys. Conf. Ser. |
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1 |
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405-408 |
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NbN HEB mixers |
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Veldhoven |
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Bristol |
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0951-3248 |
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3rd Eur. Conf. on Applied Superconductivity |
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1600 |
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