Direct Measurement of the Input RF Noise of Superconducting Hot Electron Bolometer Receivers

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	Direct Measurement of the Input RF Noise of Superconducting Hot Electron Bolometer Receivers
	Miao, W.1,2; Zhang, W.1,2 ; Zhou, K. M.3,4; Zhang, K.1,2 ; Duan, W. Y.1,2; Yao, Q. J.1,2; Shi, S. C.1,2
刊名	IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
	2013-06-01
卷号	23 期号:3 页码:2300104-2300104
关键词	Hot spot model input radio-frequency (RF) noise intersecting lines technique superconducting hot electron bolometer (HEB) receivers
ISSN号	1051-8223
通讯作者	缪魏
英文摘要	A good understanding of input radio-frequency (RF) noise contribution is of particular importance to the development of high-sensitivity superconducting hot electron bolometer (HEB) receivers. In terms of simulation results based on the hot spot model, we found that the output noise of HEB mixers is nearly linearly decreased with the mixer's bath temperature when the HEB mixer is operated at its optimum DC-bias regime under appropriate local-oscillator signal pumping, and the effect of this decrease on the receiver output power can be well corrected. Thus, we used an intersecting lines technique to measure the input RF noise temperature of a quasi-optical superconducting NbN HEB receiver, and the measured input RF noise temperature of the HEB receiver is around 300 K at 850 GHz. For comparison, we also evaluated the losses and equivalent noise temperatures of the quasi-optical components in the RF signal path. The evaluated input RF noise temperature is found to be smaller than the measured one.
学科主题	Engineering ; Physics
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Engineering, Electrical & Electronic ; Physics, Applied
研究领域[WOS]	Engineering ; Physics
关键词[WOS]	SIS RECEIVERS ; MIXERS ; TELESCOPE
收录类别	SCI
语种	英语
WOS记录号	WOS:000314283800072
公开日期	2014-01-08
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/9800]
专题	紫金山天文台_毫米波和亚毫米波技术实验室
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Key Lab Radio Astron, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Purple Mt Observ, Key Lab Radio Astron, Nanjing 210008, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 10040, Peoples R China
推荐引用方式 GB/T 7714	Miao, W.,Zhang, W.,Zhou, K. M.,et al. Direct Measurement of the Input RF Noise of Superconducting Hot Electron Bolometer Receivers[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2013,23(3):2300104-2300104.
APA	Miao, W..,Zhang, W..,Zhou, K. M..,Zhang, K..,Duan, W. Y..,...&Shi, S. C..(2013).Direct Measurement of the Input RF Noise of Superconducting Hot Electron Bolometer Receivers.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,23(3),2300104-2300104.
MLA	Miao, W.,et al."Direct Measurement of the Input RF Noise of Superconducting Hot Electron Bolometer Receivers".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 23.3(2013):2300104-2300104.