Design and development of SIS mixers for ALMA band 8
文献类型：期刊论文
| 作者 | Shan, WL; Noguchi, T; Shi, SC ; Sekimoto, Y
|
| 刊名 | IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
 |
| 出版日期 | 2005-06-01 |
| 卷号 | 15期号:2页码:503-506 |
| 关键词 | Atacama large millimeter/submillimeter array noise temperature SIS mixer wideband performance |
| ISSN号 | 1051-8223 |
| 英文摘要 | In this paper, we report on the design and experimental results of a fix-tuned Superconductor-Insulator-Superconductor (SIS) mixer for Atacama Large Millimeter/submillimeter Array (ALMA) band 8 (385-500 GHz) receivers. Nb-based SIS junctions of a current density of 10 kA/cm(2) and one micrometer size (fabricated with a two-step lift-off process) are employed to accomplish the ALMA receiver specification, which requires wide frequency coverage as well as low noise temperature. Parallel-connected twin junctions (PCTJ) are designed to resonate at the band center to tune out the junction geometric capacitance. A waveguide-microstrip probe is optimized to have nearly frequency-independent impedance at the probe's feed point, thereby making it much easier to match the low-impedance PCTJ over a wide frequency band. In addition, a superconducting magnet fixed onto the compact mixer block to provide efficient magnetic field coupling is designed. The SIS mixer demonstrates a minimum double-sideband receiver noise temperature of 108 K at the band center and temperatures of less than 167 K over the whole band (for an intermediate-frequency range of 4-8 GHz). |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Engineering, Electrical & Electronic ; Physics, Applied |
| 研究领域[WOS] | Engineering ; Physics |
| 收录类别 | ISTP ; SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000229765300106 |
| 公开日期 | 2012-03-07 |
| 源URL | [http://159.226.72.40/handle/332002/4070]  |
| 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 Astron Observ, Nobeyama Radio Observ, Minamisa Ku, Nagano 3841305, Japan 2.Natl Astron Observ China, Purple Mt Observ, Nanjing 210008, Peoples R China 3.Natl Astron Observ, Mitaka, Tokyo 1818588, Japan |
| 推荐引用方式 GB/T 7714 | Shan, WL,Noguchi, T,Shi, SC,et al. Design and development of SIS mixers for ALMA band 8[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2005,15(2):503-506. |
| APA | Shan, WL,Noguchi, T,Shi, SC,&Sekimoto, Y.(2005).Design and development of SIS mixers for ALMA band 8.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,15(2),503-506. |
| MLA | Shan, WL,et al."Design and development of SIS mixers for ALMA band 8".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 15.2(2005):503-506. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。