大型星载Ku波段波导缝隙阵列天线——宽频带设计及热变形分析
文献类型：期刊论文
| 作者 | 刘广
|
| 刊名 | 空间科学学报
 |
| 出版日期 | 2013 |
| 卷号 | 33期号:2页码:207-212 |
| 关键词 | 星载 波导缝隙 阵列天线 热变形 宽频带 |
| ISSN号 | 0254-6124 |
| 其他题名 | Wideband design and thermal deformation analysis of space-borne large waveguide slots array antenna in Ku-band |
| 通讯作者 | 北京8701信箱 |
| 中文摘要 | 高度计波导缝隙阵列天线是高增益、低副瓣天线子系统, 其宽频带、窄波 束等特点对天线设计将提出较高要求. 天线阵面较大, 在空间环境冷热交替 的作用下会发生形变, 因此, 有必要研究形变对天线电性能的影响. 本文采 用天线阵分区馈电、波导中心馈电以及加载元件等技术, 解决了天线宽频带 设计问题, 并针对热变形问题, 提出一种分析天线热变形对其电性能影响的 新方法. 现已加工出8×10阵列天线实验件, 实测结果表明, 1.3以下 驻波带宽为340MHz, E面副瓣电平为-25.9dB, H面副瓣电平 为-27.2dB, 满足实际要求, 验证了设计方法的有效性. |
| 英文摘要 | Waveguide slots array antenna was adopted in engineering project. Though this antenna had high gain, low side lobe etc, wideband requirement was a big challenge for it. As working in the space environment, large space-borne antenna would be influenced by the thermal deformation. It was necessary to analyze the influence on electrical performance, such as radiation pattern. In order to enlarge the band, antenna was separated into four areas to feed, and the feeding point was in the center of the waveguide. Special loads were exerted in waveguide H-T and E-T junctions to meet impedance matching. An approximate computation method was provided to analyze the influence of the thermal deformation on antenna performance. Some 8×10 slots array antennas were manufactured as the first step, and these antennas were tested in our near field testing system. The bandwidth of the Voltage Standing Wave Ratio (VSWR) below 1.3 was 340MHz, and the side lobe level was -25.9dB in E plane and -27.2dB in H plane. Measurement result indicated the availability of the designe. |
| 学科主题 | 微波遥感 |
| 资助信息 | 国家高技术研究发展计划项目(2011AA812417B)和 空间中心前研创新项目(O72118AA8S) |
| 语种 | 中文 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/2071]  |
| 专题 | 国家空间科学中心_微波遥感部 |
| 推荐引用方式 GB/T 7714 | 刘广. 大型星载Ku波段波导缝隙阵列天线——宽频带设计及热变形分析[J]. 空间科学学报,2013,33(2):207-212. |
| APA | 刘广.(2013).大型星载Ku波段波导缝隙阵列天线——宽频带设计及热变形分析.空间科学学报,33(2),207-212. |
| MLA | 刘广."大型星载Ku波段波导缝隙阵列天线——宽频带设计及热变形分析".空间科学学报 33.2(2013):207-212. |
入库方式： OAI收割
来源：国家空间科学中心
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