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A 400-500 GHz balanced SIS mixer with a waveguide quadrature hybrid coupler

文献类型：期刊论文

作者Serizawa, Yasutaka1,2,3; Sekimoto, Yutaro1,2,3; Kamikura, Mamoru1,2,3; Shan, Wenlei2,3,4; Ito, Tetsuya2,3
刊名INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES
出版日期2008-09-01
卷号29期号:9页码:846-861
关键词balanced SIS mixer waveguide quadrature hybrid coupler submillimeter wavelengths LO power reduction noise temperature
ISSN号0195-9271
英文摘要We have developed a 400-500 GHz low-noise balanced SIS (Superconductor Insulator Superconductor) mixer, which is based on a waveguide RF quadrature hybrid coupler. The RF quadrature hybrid was designed and fabricated as a broadband hybrid with good performance at 4 K. The fabricated RF quadrature hybrid was measured at room temperature with a submillimeter vector network analyzer to check amplitude and phase imbalance between two output ports. Then the balanced mixer was assembled with the RF hybrid, two DSB mixers, and a 180 IF hybrid. Several important parameters such as noise temperature, LO power reduction, and IF spectra were measured. The LO power reduction is defined as how much LO power the balanced mixer saves compared with a typical single-ended mixer. The measured noise temperature of the balanced mixer was similar to 55 K at the band center which corresponds to similar to 3 times the quantum noise limit (hf/k) in DSB, and similar to 120 K at the band edges. The noise performance over LO frequency was almost the same as that of the worse DSB mixer used in the balanced mixer. In addition the LO power required for the balanced mixer is similar to 11 dB less than that of the single-ended mixers.
WOS标题词Science & Technology ; Technology ; Physical Sciences
学科主题Engineering; Optics; Physics
类目[WOS]Engineering, Electrical & Electronic ; Optics ; Physics, Applied
研究领域[WOS]Engineering ; Optics ; Physics
收录类别SCI
语种英语
WOS记录号WOS:000257934000005
公开日期2011-12-29
源URL[http://159.226.72.40/handle/332002/1789]  
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.Univ Tokyo, Sch Sci, Dept Astron, Tokyo 1138654, Japan
2.Natl Inst Nat Sci, Natl Astron Observ Japan, Adv Technol Ctr, Mitaka, Tokyo 1818588, Japan
3.Natl Inst Nat Sci, Natl Astron Observ Japan, ALMA J Project Off, Mitaka, Tokyo 1818588, Japan
4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式
GB/T 7714		 Serizawa, Yasutaka,Sekimoto, Yutaro,Kamikura, Mamoru,et al. A 400-500 GHz balanced SIS mixer with a waveguide quadrature hybrid coupler[J]. INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES,2008,29(9):846-861.
APA Serizawa, Yasutaka,Sekimoto, Yutaro,Kamikura, Mamoru,Shan, Wenlei,&Ito, Tetsuya.(2008).A 400-500 GHz balanced SIS mixer with a waveguide quadrature hybrid coupler.INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES,29(9),846-861.
MLA Serizawa, Yasutaka,et al."A 400-500 GHz balanced SIS mixer with a waveguide quadrature hybrid coupler".INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES 29.9(2008):846-861.

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来源：紫金山天文台

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