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题名: Fiffect of NbN-Au contact pads on the performance of a superconducting NbN hot electron bolometer mixer
作者: Guo, X. H.; Zhang, W.; Miao, W.; Zhou, K. M.; Shi, S. C.
刊名: 2016 IEEE INTERNATIONAL WORKSHOP ON ELECTROMAGNETICS: APPLICATIONS AND STUDENT INNOVATION COMPETITION (IWEM)
出版日期: 2016
期号: 0
英文摘要: yIn this paper we study the effect of NbN-Au contact pads on the performance of a superconducting NbN hot electron bolometer (HEB) mixer. The receiver noise temperature (Tree) and IF noise bandwidth (BN) at a LO frequency of 1.3 THz are measured at different bath temperatures between 3.3 K and 8.5 K. The measured Tree and BN of the superconducting HEB mixer are nearly constant for Tbath/Te less than 0.7, and increase quickly with the further increase of Tbmh. Measurement results demonstrate that the NbN-Au contact pads in superconducting state nearly have no influence on Tree and BN, but the contact pads in resistive state make Tree and BN increase quickly with Tbath, indicated by the slope change of current-voltage curves and IF output power peak.
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16830
Appears in Collections:毫米波和亚毫米波技术实验室_期刊论文

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