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Alternative TitleWideband Design and Thermal Deformation Analysis of Space-borne Large Waveguide Slots Array Antenna in Ku-band
刘世华; 王宏建; 郝齐; 易敏; 陈雪; 刘广; lsh_0118@163.com
Source Publication空间科学学报
Keyword星载 波导缝隙 阵列天线 热变形 宽频带
Abstract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340 MHz,E面副瓣电平为-25.9 dB,H面副瓣电平为-27.2 dB,满足实际要求,验证了设计方法的有效性.
Other AbstractWaveguide 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 x 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 340 MHz, and the side lobe level was -25.9 dB in E plane and -27.2 dB in H plane. Measurement result indicated the availability of the designe.
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Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Authorlsh_0118@163.com
Recommended Citation
GB/T 7714
刘世华,王宏建,郝齐,等. 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 刘世华.,王宏建.,郝齐.,易敏.,陈雪.,...&lsh_0118@163.com.(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 刘世华,et al."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.
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