A sensitive ALMA Band 10 SIS receiver engineering model

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	A sensitive ALMA Band 10 SIS receiver engineering model
	Uzawa, Y.1; Kroug, M.1; Kojima, T.1,2; Takeda, M.1; Candotti, M.1; Fujii, Y.1; Kaneko, K.1; Shan, W.3; Noguchi, T.1; Wang, Z.4
刊名	SUPERCONDUCTOR SCIENCE & TECHNOLOGY
	2009-11-01
卷号	22 期号:11 页码:114002
关键词	TUNING CIRCUITS MIXERS DESIGN
ISSN号	0953-2048
英文摘要	We have developed a single polarization engineering model of the Atacama Large Millimeter/Submillimeter Array (ALMA) Band 10 (0.78-0.95 THz) receivers. The front-end optics comprises a pair of ellipsoidal mirrors and a corrugated feed horn. A waveguide mixer block is attached to the feed horn in which an NbTiN-based superconductor-insulator-superconductor (SIS) mixer chip, which uses a quartz substrate, is mounted onto a WR-1.2 full-height waveguide. The SIS mixer employs two Nb/AlO(x)/Nb junctions and an NbTiN/SiO(2)/Al microstrip tuning circuit. A very wide intermediate frequency (IF) system with a bandwidth of 4-12 GHz is employed. The receiver demonstrated double-sideband (DSB) noise temperatures of below 240 K at local oscillator (LO) frequencies ranging from 792 to 945 GHz, without any correction for loss in front of the receiver. The lowest DSB receiver noise temperature, 179 K, was obtained at the center frequency of the designed band, which corresponds to about 4 quanta. These results represent state-of-the-art sensitivity for a receiver at an operating physical temperature of 4 K.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Applied ; Physics, Condensed Matter
研究领域[WOS]	Physics
关键词[WOS]	TUNING CIRCUITS ; MIXERS ; DESIGN
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000270924900003
公开日期	2011-12-08
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/1683]
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.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan 2.Osaka Prefecture Univ, Grad Sch Sci, Osaka 5998531, Japan 3.Purple Mt Observ, Nanjing 210008, Peoples R China 4.Natl Inst Informat & Commun Technol, Nishi Ku, Kobe, Hyogo 6512492, Japan
推荐引用方式 GB/T 7714	Uzawa, Y.,Kroug, M.,Kojima, T.,et al. A sensitive ALMA Band 10 SIS receiver engineering model[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2009,22(11):114002.
APA	Uzawa, Y..,Kroug, M..,Kojima, T..,Takeda, M..,Candotti, M..,...&Wang, Z..(2009).A sensitive ALMA Band 10 SIS receiver engineering model.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,22(11),114002.
MLA	Uzawa, Y.,et al."A sensitive ALMA Band 10 SIS receiver engineering model".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 22.11(2009):114002.