A 385-500 GHz low noise superconductor-insulator-superconductor mixer for ALMA band 8
文献类型：期刊论文
| 作者 | Shan, WL; Asayama, S; Kamikura, M; Noguchi, T; Shi, S; Sekimoto, Y |
| 刊名 | IEICE TRANSACTIONS ON ELECTRONICS
 |
| 出版日期 | 2006-02-01 |
| 卷号 | E89C期号:2页码:170-176 |
| 关键词 | Atacama Large Millimeter/submillimeter Array noise temperature SIS mixer wideband performance sideband separation |
| ISSN号 | 0916-8524 |
| 英文摘要 | 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. A parallel-connected twin-junction (PCTJ) is 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 easy to match the low-impedance PCTJ over a wide frequency band. The RF embedding impedance is retrieved by fitting the measured pumped I-V curves to confirm good matching between PCTJ and signal source. We demonstrate here a minimum double-sideband receiver noise temperature of 3 times of quantum limits for an intermediate-frequency range of 4-8 GHz. The mixers were measured in band 8 cartridge with a sideband separation scheme. Single-sideband receiver noise below ALMA specification was achieved over the whole band. |
| WOS标题词 | Science & Technology ; Technology |
| 学科主题 | Engineering |
| 类目[WOS] | Engineering, Electrical & Electronic |
| 研究领域[WOS] | Engineering |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000235509400013 |
| 公开日期 | 2012-02-07 |
| 源URL | [http://159.226.72.40/handle/332002/3568]  |
| 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, Mitaka, Tokyo 1818588, Japan 2.Natl Astron Observ China, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shan, WL,Asayama, S,Kamikura, M,et al. A 385-500 GHz low noise superconductor-insulator-superconductor mixer for ALMA band 8[J]. IEICE TRANSACTIONS ON ELECTRONICS,2006,E89C(2):170-176. |
| APA | Shan, WL,Asayama, S,Kamikura, M,Noguchi, T,Shi, S,&Sekimoto, Y.(2006).A 385-500 GHz low noise superconductor-insulator-superconductor mixer for ALMA band 8.IEICE TRANSACTIONS ON ELECTRONICS,E89C(2),170-176. |
| MLA | Shan, WL,et al."A 385-500 GHz low noise superconductor-insulator-superconductor mixer for ALMA band 8".IEICE TRANSACTIONS ON ELECTRONICS E89C.2(2006):170-176. |
入库方式： OAI收割
来源：紫金山天文台
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