| Records |
| Author |
Kawamura, J.; Blundell, R.; Tong, C.-Y. E.; Papa, D. C.; Hunter, T. R.; Paine, S. N.; Patt, F.; Gol'tsman, G.; Cherednichenko, S.; Voronov, B.; Gershenzon, E. |
| Title |
Superconductive hot-electron-bolometer mixer receiver for 800-GHz operation |
Type |
Journal Article |
| Year |
2000 |
Publication |
IEEE Trans. Microw. Theory Techn. |
Abbreviated Journal |
IEEE Trans. Microw. Theory Techn. |
| Volume |
48 |
Issue |
4 |
Pages |
683-689 |
Keywords  |
NbN HEB mixers, LO power, local oscillator power, saturation, linearity, dynamic range |
| Abstract |
In this paper, we describe a superconductive hot-electron-bolometer mixer receiver designed to operate in the partially transmissive 350-μm atmospheric window. The receiver employs an NbN thin-film microbridge as the mixer element, in which the main cooling mechanism of the hot electrons is through electron-phonon interaction. At a local-oscillator frequency of 808 GHz, the measured double-sideband receiver noise temperature is TRX=970 K, across a 1-GHz intermediate-frequency bandwidth centered at 1.8 GHz. We have measured the linearity of the receiver and the amount of local-oscillator power incident on the mixer for optimal operation, which is PLO≈1 μW. This receiver was used in making observations as a facility instrument at the Heinrich Hertz Telescope, Mt. Graham, AZ, during the 1998-1999 winter observing season. |
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0018-9480 |
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RPLAB @ lobanovyury @ |
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573 |
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Kawamura, J.; Blundell, R.; Tong, C-Y. E.; Gol'tsman, G.; Gershenzon, E.; Voronov, B.; Cherednichenko, S. |
| Title |
Phonon-cooled NbN HEB mixers for submillimeter wavelengths |
Type |
Conference Article |
| Year |
1997 |
Publication |
Proc. 8th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 8th Int. Symp. Space Terahertz Technol. |
| Volume |
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Issue |
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Pages |
23-28 |
| Keywords |
waveguide NbN HEB mixers |
| Abstract |
The noise performance of receivers incorporating NbN phonon-cooled superconducting hot electron bolometric mixers is measured from 200 GHz to 900 GHz. The mixer elements are thin-film (thickness — 4 nm) NbN with —5 to 40 pm area fabricated on crystalline quartz sub- strates. The receiver noise temperature from 200 GHz to 900 GHz demonstrates no unexpected degradation with increasing frequency, being roughly TRx ,; 1-2 K The best receiver noise temperatures are 410 K (DSB) at 430 GHz, 483 K at 636 GHz, and 1150 K at 800 GHz. |
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275 |
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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 |
Type |
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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1516 |
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Tong, C. E.; Blundell, R.; Papa, D. C.; Smith, M.; Kawamura, J.; Gol'tsman, G.; Gershenzon, E.; Voronov, B. |
| Title |
An all solid-state superconducting heterodyne receiver at terahertz frequencies |
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Journal Article |
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1999 |
Publication |
IEEE Microw. Guid. Wave Lett. |
Abbreviated Journal |
IEEE Microw. Guid. Wave Lett. |
| Volume |
9 |
Issue |
9 |
Pages |
366-368 |
| Keywords |
waveguide NbN HEB mixers |
| Abstract |
A superconducting hot-electron bolometer mixer-receiver operating from 1 to 1.26 THz has been developed. This heterodyne receiver employs two solid-state local oscillators each consisting of a Gunn oscillator followed by two stages of varactor frequency multiplication. The measured receiver noise temperature is 1350 K at 1.035 THz and 2700 K at 1.26 THz. This receiver demonstrates that tunable solid-state local oscillators, supplying only a few micro-watts of output power, can be used in terahertz receiver applications. |
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1051-8207 |
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1565 |
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