Institutional Repository of Radio Astronomy Research Laboratory
| 制冷HEMT低噪声放大器偏置电源的研制 | |
| Alternative Title | Bias Power Supply Design for a Cryogenic HEMT Low Noise Amplifier |
徐江1,2 ; 孙正文1,2
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| 2008 | |
| Source Publication | 天文研究与技术
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| ISSN | 1672-7673 |
| Volume | 5Issue:1Pages:91-98 |
| Contribution Rank | 1 |
| Abstract | 高电子迁移率晶体管(HEMT)目前被广泛应用于高灵敏度(低噪声)射电天文接收机 中。在低温制冷环境下，其低噪声性能更佳，但对偏置供电系统要求很高，只有在特定的偏置 条件下才能得到最佳的低噪声、高增益、高稳定性。本文提供了一套可调试、高稳定、高可 靠性、带远程监控功能的可供多级低温制冷HEMT管的偏置电源的设计思路、方法和制作，使 在低温制冷状态下的HEMT管能够稳定、安全、可靠地工作在最佳状态。 |
| Other Abstract | High Electronic Mobility Transistors (HEMT) are widely used in high sensitivity (low noise) radio astronomy receivers. Cooling a HEMT-based amplifier to 15K decreases the noise temperature by a factor of ten (and increases gain by about 3dB) compared to room temperature values. But only under the specific bias condition, the HEMT can obtain the optimal low noise, high gain and high stability. An approach to implement a bias power supply having properties of adjustable, super-stable, high reliability with remote monitoring function for multi-stage cryogenic HEMTs is provided in this paper. The correctness and feasibility of the approach have been verified by testing and late application. |
| Keyword | Hemt 低噪声 放大器 偏置电源 |
| Subject Area | 天文仪器、天文技术与数据 |
| URL | 查看原文 |
| Indexed By | CSCD |
| Language | 中文 |
| Funding Project | 微波接收机技术实验室 |
| CSCD ID | CSCD:3282464 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/136 |
| Collection | 射电天文研究室_微波技术实验室 射电天文研究室 研究生学位论文 |
| Affiliation | 1.中国科学院国家天文台乌鲁木齐天文站，新疆乌鲁木齐830011 2.中国科学院研究生院，北京100049 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 徐江,孙正文. 制冷HEMT低噪声放大器偏置电源的研制[J]. 天文研究与技术,2008,5(1):91-98. |
| APA | 徐江,&孙正文.(2008).制冷HEMT低噪声放大器偏置电源的研制.天文研究与技术,5(1),91-98. |
| MLA | 徐江,et al."制冷HEMT低噪声放大器偏置电源的研制".天文研究与技术 5.1(2008):91-98. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 制冷HEMT低噪声放大器偏置电源的研制.（347KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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