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An exam on submillimeter receivers. Problems and answers |
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1999 |
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478 |
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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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Journal Article |
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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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Mason, Whitney; Waterman, J. R. |
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Electrical and optical characteristics of two color mid wave HgCdTe infrared detectors |
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Journal Article |
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1999 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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74 |
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11 |
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1633-1635 |
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0003-6951 |
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RPLAB @ s @ |
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461 |
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Henry, Richard C. |
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Diffuse background radiation |
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1999 |
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Astrophys. J. |
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516 |
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2 |
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L49-L52 |
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0004637X |
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434 |
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Chattopadhyay, G.; Rice, F.; Miller, D.; LeDuc, H. G.; Zmuidzinas, J. |
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A 530-GHz balanced mixer |
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Journal Article |
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1999 |
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IEEE Microw. and Guided Wave Lett. |
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9 |
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11 |
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467-469 |
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RPLAB @ s @ sis_Chattopadhyay_1999 |
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301 |
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