Institutional Repository of Radio Astronomy Research Laboratory
| 阵列天线互耦效应研究 | |
| Alternative Title | Research on Mutual Coupling of Array Antenna |
段雪峰1,2 ; 王凯1,2; 李健1,2; 闫浩1,2; 宁云炜1,2; 曹亮1,2; 马军1,2
| |
| 2022-11-01 | |
| Source Publication | 天文研究与技术
 |
| ISSN | 1672-7673 |
| Volume | 19Issue:6Pages:606-612 |
| Contribution Rank | 1 |
| Abstract | 相控阵馈源是将阵列天线放置于射电望远镜焦面场处，用以实现更高增益及更灵活波束调控的接收机技术。鉴于其与阵列天线一样，是由多个天线单元以一定方式组合排列而成，工作时阵元之间产生电磁耦合在所难免。本文选用螺旋天线作为阵列天线单元，工作频率为1.25GHz，对独立天线进行仿真优化后，该天线-10dB阻抗带宽仅为70MHz。依托该天线单元建立5×5矩形排布螺旋天线阵列模型，分别选取阵元间距为1、0.5、0.25、0.125倍波长（1.25GHz@0.24m），以此验证不同阵元间距下的互耦效应对整个阵列带宽的影响。最终通过对各阵元输入阻抗进行匹配，仿真得到在0.25倍波长间距下，阵列中心阵子的-10dB阻抗带宽可扩展至550MHz，而阵列天线的带宽也基本表征了将其用作相控阵馈源的工作带宽。上述工作加深了对阵列天线带宽特性的理解，也为实际应用于射电望远镜系统的相控阵馈源实现更宽的工作带宽提供了可能。 |
| Other Abstract | Phased Array Feed is a receiver technology that places the array antenna at the focal plane field of radio telescope to achieve higher gain and more flexible beam regulation.As same as the array antenna,it is composed of multiple antenna elements in a certain way,so electromagnetic coupling between the array elements during operation is inevitable.In this paper,the helical antenna is selected as the array antenna unit,and the working frequency is 1.25 GHz.The independent antenna is simulated and optimized,and the-10 dB impedance bandwidth is only 70 MHz.Relying on the antenna unit for the model of rectangular arrangement 5 × 5 helical antenna array,the array element spacing of 1,0.5,0.25 and 0.125 times of wavelength are selected respectively (1.25 GHz@0.24 m),in order to verify the influence of mutual coupling effect under different array element spacing on the bandwidth of the whole array.Finally,by matching the input impedance of each array element,the simulation shows that under 0.25 times the wavelength spacing,the-10 dB impedance bandwidth of the central element of the array is expanded to 550 MHz,and the bandwidth of the array antenna basically represents the working bandwidth used as the phased array feed.The above work not only deepens the understanding of the bandwidth characteristics of the array antenna,but also makes it possible for the phased array feed applied to the radio telescope system to achieve a wider working bandwidth. |
| Keyword | 阵列天线 相控阵馈源 阻抗 耦合性 带宽 |
| DOI | 10.14005/j.cnki.issn1672-7673.20220624.001 |
| URL | 查看原文 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:7347476 |
| Citation statistics |
Cited Times:2[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5087 |
| Collection | 射电天文研究室_数字技术实验室 110米口径全可动射电望远镜（QTT）_技术成果 射电天文研究室_微波技术实验室 |
| Corresponding Author | 王凯 |
| Affiliation | 1.中国科学院新疆天文台, 新疆乌鲁木齐 830011; 2.新疆微波技术重点实验室, 新疆乌鲁木齐 830011 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 段雪峰,王凯,李健,等. 阵列天线互耦效应研究[J]. 天文研究与技术,2022,19(6):606-612. |
| APA | 段雪峰.,王凯.,李健.,闫浩.,宁云炜.,...&马军.(2022).阵列天线互耦效应研究.天文研究与技术,19(6),606-612. |
| MLA | 段雪峰,et al."阵列天线互耦效应研究".天文研究与技术 19.6(2022):606-612. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 段雪峰-2022-阵列天线互耦效应研究.（2934KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment