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| Author |
van de Stadt, H. |
| Title |
An improved 1 THz waveguide mixer |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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Pages |
536 |
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Charlottesville, Virginia, USA |
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Probably other authors exist. |
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no |
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263 |
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| Author |
Belitsky, V. Yu.; Kollberg, E. L. |
| Title |
Tuning circuit for NbN SIS mixer |
Type |
Conference Article |
| 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 |
Ellison, B. N.; Maddison, B. J.; Matheson, D. N.; Oldfield, M. L.; Marazita, S.; Crowe, T. W.; Maaskant, P.; Kelly, W. M. |
| Title |
First results for a 2.5 THz Schottky diode waveguide mixer |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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Pages |
494 |
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Place of Publication |
Charlottesville, Virginia, USA |
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no |
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265 |
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| Author |
Betz, A. L.; Borejko, R. T. |
| Title |
A practical Schottky mixer for 5 THz |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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Pages |
503 |
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no |
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269 |
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| Author |
Hesler, J. L.; Hall, W. R.; Crowe, T. W.; Weikle, R. M.; Bradley, R. F.; Pan, Shing-Kuo |
| Title |
Submm wavelenght waveguide mixers using planar Schottky barier diods |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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Pages |
462 |
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no |
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270 |
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| Author |
Tong, C. Y. E.; Blundell, R.; Bumble, B.; Stern, J. A.; LeDuc, H. G. |
| Title |
Sub-Millimeter distributed quasiparticle receiver employing a non-Linear transmission line |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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| Volume |
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Issue |
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Pages |
47 |
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no |
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271 |
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Nebosis, R. S.; Semenov, A. D.; Gousev, Yu. P.; Renk, K. F. |
| Title |
Rigorous analysis of a superconducting hot-electron bolometer mixer: theory and comparision with experiment |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
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Pages |
601-613 |
| Keywords |
HEB mixer, model, conversion gain, noise temperature, impedance, 2.5 THz |
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Place of Publication |
Charlottesville, Virginia, USA |
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no |
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605 |
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Trifonov, V. A.; Karasik, B. S.; Zorin, M. A.; Gol'tsman, G. N.; Gershenzon, E. M.; Lindgren, M.; Danerud, M.; Winkler, D. |
| Title |
9.6 μm wavelength mixing in a patterned YBa2Cu3O7-δ thin film |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 7th Int. Symp. Space Terahertz Technol. |
| Volume |
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Issue |
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Pages |
337-348 |
| Keywords |
YBCO HTS HEB mixers |
| Abstract |
Hot-electron bolometric (HEB) mixing of 9.6 gm infrared radiation from two lasers in high-quality YBa2Cu307_3 (YBCO) patterned thin film has been demonstrated. A heterodyne measurement showed an intermediate frequency (IF) bandwidth of 18 GHz, limited by our measurement system. An intrinsic limit of 100 GHz is predicted. Between 0.1 and 1 GHz intermediate frequency, temperature fluctuations with an equivalent output noise temperature Tfl up to -150 K, contributed to the mixer noise while Johnson noise dominated above 1 GHz. The overall conversion loss at 77 K at low intermediate frequencies was measured to be -25 dB, of which 13 dB was due to the coupling loss. The IIEB mixer is very promising for use in heterodyne receivers within the whole infrared range. |
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no |
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1615 |
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Yagoubov, P.; Gol'tsman, G.; Voronov, B.; Svechnikov, S.; Cherednichenko, S.; Gershenzon, E.; Belitsky, V.; Ekström, H.; Semenov, A.; Gousev, Yu.; Renk, K. |
| Title |
Quasioptical phonon-cooled NbN hot-electron bolometer mixer at THz frequencies |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 7th Int. Symp. Space Terahertz Technol. |
| Volume |
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Issue |
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Pages |
303-317 |
| Keywords |
NbN HEB mixers |
| Abstract |
In our experiments we tested phonon-cooled hot-electron bolometer (HEB) quasioptical mixer based on spiral antenna designed for 0.5-1.2 THz frequency band and fabricated on sapphire, Si-coated sapphire and high resistivity silicon substrates. HEB devices were produced from thin superconducting NbN film 3.5-6 nm thick with the critical temperature of about 11-12 K. For these devices we achieved the receiver noise temperature T R (DSB) = 3000 K in the 500-700 GHz frequency range and an IF bandwidth of 3-4 GHz. Prelimanary measurements at frequencies 1-1.2 THz resulted the receiver noise temperature about 9000 K (DSB). |
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no |
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1614 |
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| Author |
Kawamura, J.; Blundell, R.; Tong, C.-Y. E.; Golts'man, G.; Gershenzon, E.; Voronov B. |
| Title |
Superconductive NbN hot-electron bolometric mixer performance at 250 GHz |
Type |
Conference Article |
| Year |
1996 |
Publication |
Proc. 7th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 7th Int. Symp. Space Terahertz Technol. |
| Volume |
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Issue |
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Pages |
331-336 |
| Keywords |
NbN HEB mixers |
| Abstract |
Thin film NbN (<40 A) strips are used as waveguide mixer elements. The electron cooling mechanism for the geometry is the electron-phonon interaction. We report a receiver noise temperature of 750 K at 244 GHz, with / IF = 1.5 GHz, Af= 500 MHz, and Tphysical = 4 K. The instantaneous bandwidth for this mixer is 1.6 GHz. The local oscillator (LO) power is 0.5 1.tW with 3 dB-uncertainty. The mixer is linear to 1 dB up to an input power level 6 dB below the LO power. We report the first detection of a molecular line emission using this class of mixer, and that the receiver noise temperature determined from Y-factor measurements reflects the true heterodyne sensitivity. |
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no |
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945 |
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