Near-field beam pattern measurement of qualification model of ALMA band 8 (385-500 GHz) cartridge receiver
文献类型：期刊论文
| 作者 | Naruse, Masato1,2; Ito, Tetsuya2; Sekimoto, Yutaro1,2; Toba, Hiroyuki1,2; Satou, Naohisa2; Sugimoto, Masahiro2; Shan, Wenlei3; Iizuka, Yoshizou2; Kamba, Toshiaki2; Kamikura, Mamoru1,2 |
| 刊名 | EXPERIMENTAL ASTRONOMY
 |
| 出版日期 | 2009-05-01 |
| 卷号 | 24期号:1-3页码:89-107 |
| 关键词 | Near-field beam pattern measurements SIS receiver Physical optics simulation |
| ISSN号 | 0922-6435 |
| 英文摘要 | We have developed a near-field vector beam measurement system covering the range of frequencies from 385 to 500 GHz. The measurement set-up is capable of measurements with dynamic range exceeding 50 dB and amplitude and phase stability respectively of 0.1 dB/h and 1 degree/5 min at room temperature. Beam patterns of the ALMA band 8 corrugated horns and receiver optics block were measured at room temperature and lately compared with physical optics calculations obtained in the far-field. Both co-polar and cross-polar beam patterns of a qualification model of the ALMA band 8 cartridge cooled in a cartridge-test-cryostat have also been measured in the near-field as a detector of a submillimeter vector network analyzer. The measurements presented in this work refer to the lowest, middle and upper frequencies of band 8. The comparisons between software model and experimental measurements at these frequencies show good agreement down to -30 dB for the main polarization component. The cross-polarization level of the beam propagating through the receiver optics block was also characterized. We found that a cross-polarization level better than -28 dB can be achieved at all measured frequencies. The measured beam pattern of this receiver corresponds to efficiency of greater than 92% at the sub reflector (diameter of 750 mm) of the ALMA 12 m optics. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | GUIDE SPLIT-BLOCK ; FAR-FIELD ; ARRAY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000265508300004 |
| 公开日期 | 2011-12-08 |
| 源URL | [http://159.226.72.40/handle/332002/1705]  |
| 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, Dept Astron, Bunkyo Ku, Tokyo 113033, Japan 2.Natl Astron Observ Japan, Natl Inst Nat Sci, Adv Technol Ctr, Tokyo 1818588, Japan 3.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Naruse, Masato,Ito, Tetsuya,Sekimoto, Yutaro,et al. Near-field beam pattern measurement of qualification model of ALMA band 8 (385-500 GHz) cartridge receiver[J]. EXPERIMENTAL ASTRONOMY,2009,24(1-3):89-107. |
| APA | Naruse, Masato.,Ito, Tetsuya.,Sekimoto, Yutaro.,Toba, Hiroyuki.,Satou, Naohisa.,...&Serizawa, Yasutaka.(2009).Near-field beam pattern measurement of qualification model of ALMA band 8 (385-500 GHz) cartridge receiver.EXPERIMENTAL ASTRONOMY,24(1-3),89-107. |
| MLA | Naruse, Masato,et al."Near-field beam pattern measurement of qualification model of ALMA band 8 (385-500 GHz) cartridge receiver".EXPERIMENTAL ASTRONOMY 24.1-3(2009):89-107. |
入库方式： OAI收割
来源：紫金山天文台
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