Performance of Terahertz Waveguide SIS Mixers Employing Epitaxial NbN Films and Nb Junctions
文献类型：期刊论文
| 作者 | Kojima, Takafumi1,2; Kroug, Matthias2; Takeda, Masanori3; Shan, Wenlei; Fujii, Yasunori2; Uzawa, Yoshinori2; Wang, Zhen3,4; Shi, Shengcai4
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| 刊名 | IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
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| 出版日期 | 2009-06-01 |
| 卷号 | 19期号:3页码:405-408 |
| 关键词 | Atacama large millimeter array niobium nitride SIS mixers submillimeter wave |
| ISSN号 | 1051-8223 |
| 英文摘要 | We have designed, fabricated, and tested terahertz waveguide superconductor-insulator-superconductor (SIS) mixers with Nb/AlO(x)/Nb junctions and NbN/SiO(2)/Al microstriplines. The NbN ground plane used was an epitaxial film grown on a single-crystal MgO substrate. A two-junction tuning circuit, which was directly placed at the feed point of a bow-tie waveguide probe without impedance transformers, was used. A full-height waveguide, hammer-type choke filter, and zero-depth backshort were adopted for the design of the microstrip-waveguide transition structure. The Nb junctions in which the current density was 6.5 kA/cm(2) showed good characteristics, yielding a subgap-to-normal-state resistance ratio greater than 20. The results obtained for the mixer performance showed a receiver noise temperature of 440 K (DSB) at 1 THz; the results were corrected for losses in the beam splitter and the vacuum window. A detailed analysis of the mixers suggested that the waveguide mixers composed of epitaxial NbN films and Nb junctions were effective in the terahertz band. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 学科主题 | Engineering; Physics |
| 类目[WOS] | Engineering, Electrical & Electronic ; Physics, Applied |
| 研究领域[WOS] | Engineering ; Physics |
| 关键词[WOS] | MILLIMETER ; DESIGN |
| 收录类别 | SCI ; ISTP |
| 语种 | 英语 |
| WOS记录号 | WOS:000268282000065 |
| 公开日期 | 2011-12-08 |
| 源URL | [http://159.226.72.40/handle/332002/1697]  |
| 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.Osaka Prefecture Univ, Naka Ku, Osaka 5998531, Japan 2.Natl Observ Japan, Mitaka, Tokyo 1818588, Japan 3.Natl Inst Informat & Commun Technol, Nishi Ku, Kobe, Hyogo 6512492, Japan 4.Natl Astron Observ, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kojima, Takafumi,Kroug, Matthias,Takeda, Masanori,et al. Performance of Terahertz Waveguide SIS Mixers Employing Epitaxial NbN Films and Nb Junctions[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2009,19(3):405-408. |
| APA | Kojima, Takafumi.,Kroug, Matthias.,Takeda, Masanori.,Shan, Wenlei.,Fujii, Yasunori.,...&Shi, Shengcai.(2009).Performance of Terahertz Waveguide SIS Mixers Employing Epitaxial NbN Films and Nb Junctions.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,19(3),405-408. |
| MLA | Kojima, Takafumi,et al."Performance of Terahertz Waveguide SIS Mixers Employing Epitaxial NbN Films and Nb Junctions".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 19.3(2009):405-408. |
入库方式： OAI收割
来源：紫金山天文台
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