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Ozhegov, R. V.; Okunev, O. V.; Gol’tsman, G. N.; Filippenko, L. V.; Koshelets, V. P. |
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Title |
Noise equivalent temperature difference of a superconducting integrated terahertz receiver |
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Journal Article |
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Year |
2009 |
Publication |
J. Commun. Technol. Electron. |
Abbreviated Journal |
J. Commun. Technol. Electron. |
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Volume |
54 |
Issue |
6 |
Pages |
716-720 |
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Keywords |
SIS mixer SIR NETD, FFO, harmonic mixer |
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Abstract |
The dependence of the noise equivalent temperature difference (NETD) of a superconducting integrated receiver (SIR) on the receiver noise temperature and the inputsignal level has been investigated. An unprecedented NETD of 13±2 mK has been measured at a SIR noise temperature of 200 K, intermediate-frequency bandwidth of 4 GHz, and time constant of 1 s. With a decrease in the input signal, an improvement in the NETD is observed. This effect is explained by a reduction in the influence of the instabilities of the receiver power supply and the amplification circuit that occur when the input signal is decreased. |
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1064-2269 |
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1400 |
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Author |
Koshelets, V. P.; Khudchenko, A. V. |
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Title |
Analysis of spectral characteristics of a superconducting integrated receiver |
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Journal Article |
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Year |
2006 |
Publication |
J. Communications Technol. Electron. |
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Volume |
51 |
Issue |
5 |
Pages |
596-603 |
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Keywords |
SIR |
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1064-2269 |
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526 |
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Ozhegov, R. V.; Gorshkov, K. N.; Gol'tsman, G. N.; Kinev, N. V.; Koshelets, V. P. |
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Title |
The stability of a terahertz receiver based on a superconducting integrated receiver |
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Journal Article |
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Year |
2011 |
Publication |
Supercond. Sci. Technol. |
Abbreviated Journal |
Supercond. Sci. Technol. |
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Volume |
24 |
Issue |
3 |
Pages |
035003 |
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Keywords |
SIS mixer, SIR, stability |
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We present the results of stability testing of a terahertz radiometer based on a superconducting receiver with a SIS tunnel junction as the mixer and a flux-flow oscillator as the local oscillator. In the continuum mode, the receiver with a noise temperature of 95 K at 510 GHz measured over the intermediate frequency (IF) passband of 4-8 GHz offered a noise equivalent temperature difference of 10 ± 1 mK at an integration time of 1 s. We offer a method to significantly increase the integration time without the use of complex measurement equipment. The receiver observed a strong signal over a final detection bandwidth of 4 GHz and offered an Allan time of 5 s. |
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RPLAB @ gujma @ |
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705 |
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Koshelets, V.P.; Dmitriev, P.N.; Ermakov, A.B.; Sobolev, A.S.; Torgashin, M.Y.; Kurin, V.V.; Pankratov, A.L.; Mygind, J. |
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Title |
Optimization of the phase-locked flux-flow oscillator for the submm integrated receiver |
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Journal Article |
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2005 |
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IEEE Trans. Appl. Supercond. |
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Volume |
15 |
Issue |
2 |
Pages |
964-967 |
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Keywords |
SIR |
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1051-8223 |
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515 |
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Koshelets, V. P.; Shitov, S. V.; Ermakov, A. B.; Filippenko, L. V.; Koryukin, O. V.; Khudchenko, A. V.; Torgashin, M. Yu.; Yagoubov, P. A.; Hoogeveen, R. W. M.; Pylypenko, O. M. |
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Title |
Superconducting integrated receiver for TELIS |
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Journal Article |
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2005 |
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IEEE Trans. Appl. Supercond. |
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15 |
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2 |
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960-963 |
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SIR |
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1051-8223 |
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517 |
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Koshelets, V. P.; Ermakov, A. B.; Filippenko, L. V.; Khudchenko, A. V.; Kiselev, O. S.; Sobolev, A. S.; Torgashin, M. Y.; Yagoubov, P. A.; Hoogeveen, R. W. M.; Wild, W. |
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Title |
Superconducting integrated submillimeter receiver for TELIS |
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Journal Article |
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2007 |
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IEEE Trans. Appl. Supercond. |
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17 |
Issue |
2 |
Pages |
336-342 |
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SIR |
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1051-8223 |
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524 |
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Author |
Torgashin, Mikhail Yu.; Koshelets, Valery P.; Dmitriev, Pavel N.; Ermakov, Andrey B.; Filippenko, Lyudmila V.; Yagoubov, Pavel A. |
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Title |
Superconducting Integrated Receiver Based on Nb-AlN-NbN-Nb Circuits |
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Journal Article |
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2007 |
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IEEE Trans. Appl. Supercond. |
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17 |
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2 |
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379-382 |
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SIR |
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1051-8223 |
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525 |
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Кошелец, В. П.; Дмитриев, П. Н.; Ермаков, А. Б.; Филиппенко, Л. В.; Корюкин, О. В.; Торгашин, М. Ю.; Худченко, А. В. |
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Интегральный сверхпроводниковый спектрометр |
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Journal Article |
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2005 |
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Известия вузов. Радиофизика |
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48 |
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10-11 |
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947-954 |
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SIR |
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russian |
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518 |
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Koshelets, V. P.; Dmitriev, P. N.; Ermakov, A. B.; Filippenko, L. V.; Koryukin, O. V.; Torgashin, M. Yu.; Khudchenko, A. V. |
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Title |
Integrated superconducting spectrometer for atmosphere monitoring |
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Journal Article |
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2005 |
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Radiophys. Quant. Electron. |
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48 |
Issue |
10-11 |
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844-850 |
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SIR |
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0033-8443 |
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519 |
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Ozhegov, R. V.; Gorshkov, K. N.; Smirnov, K. V.; Gol’tsman, G. N.; Filippenko, L. V.; Koshelets, V. P. |
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Title |
Terahertz imaging system based on superconducting integrated receiver |
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Conference Article |
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2010 |
Publication |
Proc. 2-nd Int. Conf. Terahertz and Microwave radiation: Generation, Detection and Applications |
Abbreviated Journal |
Proc. 2-nd Int. Conf. Terahertz and Microwave radiation: Generation, Detection and Applications |
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20-22 |
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Keywords |
SIS mixer, SIR |
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Abstract |
The development of terahertz imaging instruments for security systems is on the cutting edge of terahertz technology. We are developing a THz imaging system based on a superconducting integrated receiver (SIR). An SIR is a new type of heterodyne receiver based on an SIS mixer integrated with a flux-flow oscillator (FFO) and a harmonic mixer which is used for phase-locking the FFO. Developing an array of SIRs would allow obtaining amplitude and phase characteristics of incident radiation in the plane of the receiver. Employing an SIR in an imaging system means building an entirely new instrument with many advantages compare to traditional systems: i) high temperature resolution, comparable to the best results for incoherent receivers; ii) high spectral resolution allowing spectral analysis of various substances; iii) the local oscillator frequency can be varied to obtain images at different frequencies, effectively providing “color” images; iv) since a heterodyne receiver preserves the phase of the radiation, it is possible to construct 3D images. The paper presents a prototype THz imaging system using an 1 pixel SIR. We have studied the dependence of the noise equivalent temperature difference (NETD) on the integration time and also possible ways of achieving best possible sensitivity. An NETD of 13 mK was obtained with an integration time of 1 sec a detection bandwidth of 4 GHz at a local oscillator frequency of 520 GHz. An important advantage of an FFO is its wide operation range: 300-700 GHz. |
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Call Number |
ozhegov2010terahertz |
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1397 |
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