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Hans Ekstrom; Karasik, Boris S.; Kollberg, Erik L.; Sigfrid Yngvesson |
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Title |
Conversion gain and noise of niobium superconducting hot–electron–mixers |
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1995 |
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IEEE Trans. Appl. Supercond. |
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43 |
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4 |
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938-947 |
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Nb HEB mixers |
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254 |
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Datesman, A.M.; Schultz, J.C.; Lichtenberger, A.W.; Golish, D.; Walker, C.K.; Kooi, J. |
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Fabrication and characterization of niobium diffusion-cooled hot-electron bolometers on silicon nitride membranes |
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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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928-931 |
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1051-8223 |
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439 |
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Shitov, S. V.; Levitchev, M.; Veretennikov, A. V.; Koshelets, V. P.; Prokopenko, G. V.; Filippenko, L. V.; Ermakov, A. B.; Shtanyuk, A. M.; Kohlstedt, H.; Ustinov, A. V. |
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Title |
Superconducting integrated receiver as 400-600 GHz tester for coolable devices |
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2001 |
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IEEE Trans. Appl. Supercond. |
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11 |
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1 |
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832-835 |
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RPLAB @ s @ sis_Shitov_2001 |
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313 |
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Gol’tsman, G. N.; Gershenzon, E. M. |
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Title |
Phonon-cooled hot-electron bolometric mixer: overview of recent results |
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1999 |
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Appl. Supercond. |
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Appl. Supercond. |
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6 |
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10-12 |
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649-655 |
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NbN HEB mixers |
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The paper presents an overview of recent results for NbN phonon-cooled hot electron bolometric (HEB) mixers. The noise temperature of the receivers based on both quasioptical and waveguide versions of HEB mixer has crossed the level of 1 K·GHz−1 at 430 GHz (410 K) and 600–650 GHz (480 K) and is close to this level at 820 GHz (1100 K) and 900 GHz (980 K). The gain bandwidth measured for quasioptical HEB mixer at 620 GHz reached 4 GHz and the noise temperature bandwidth was almost 8 GHz. Local oscillator power requirements are about 1 μW for mixers made by photolithography and are about 100 nW for mixers made by e-beam lithography. The studies in terahertz receivers based on HEB superconducting mixers now present a dynamic, rapidly developing field. |
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0964-1807 |
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1564 |
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Lobanov, Y.V.; Tong, C.-Y.E.; Hedden, A.S.; Blundell, R.; Voronov, B.M.; Gol'tsman, G.N. |
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Title |
Direct measurement of the gain and noise bandwidths of HEB mixers |
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2011 |
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IEEE Trans. Appl. Supercond. |
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IEEE Trans. Appl. Supercond. |
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21 |
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3 |
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645-648 |
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waveguide NbN HEB mixers |
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The intermediate frequency (IF) bandwidth of a hot electron bolometer (HEB) mixer is an important parameter of the mixer, in that it helps to determine its suitability for a given application. With the availability of wideband low noise amplifiers, it is simple to measure the performance of an HEB mixer over a wide range of IF at a fixed LO frequency using the standard Y-factor method. This in-situ method allows us to measure both the gain and noise bandwidths simultaneously. We have also measured mixer output impedance with a vector network analyser. Intrinsic time constant has been extracted from the impedance data and compared to the mixer's bandwidths determined from receiver Y-factor measurement. |
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RPLAB @ gujma @ |
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720 |
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