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| 基于波导功分馈电的CTS阵列天线设计 |
| Design of a high gain CTS array antenna feed by power divider |
| 投稿时间：2019-03-15 |
| DOI：10.3969/j.issn.1005-5630.2019.06.008 |
| 中文关键词: 连续横向枝节（CTS） 阵列天线 功率分配器 |
| 英文关键词:continuous transverse stub（CTS） array antenna power divider |
| 基金项目:上海市科学技术委员会科研计划项目（18DZ1200805） |
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| 中文摘要: |
| 本文设计了一种具有高增益、高效率、低损耗特性的16单元连续横向枝节（continuous transverse stub，CTS）天线阵列。该天线的辐射枝节部分采用了串联的结构来降低损耗，从而提高辐射效率，并且使用了功率分配器和辐射器组合的方式给CTS阵列天线进行馈电，改善了CTS阵列天线的阻抗匹配和方向性，使天线可以在双频段工作。对设计的天线采用电磁仿真软件HFSS进行仿真优化，仿真结果表明，CTS阵列天线在75～80 GHz和85 ～89 GHz双频带内S11值小于-10 dB，工作频率在78.8 GHz时增益为28.6 dB，在87.5 GHz时增益为28.4 dB，天线效率均超过50%，主瓣波束宽度为4.4°。 |
| 英文摘要: |
| This paper presents a 16-slot continuous transverse stub (CTS) array antenna that can achieve high gain, high efficiency and lower transmission loss. The antenna can reduce losses and increase radiation efficiency by using series connection stubs. To improve the impedance matching and the directivity, the CTS unit is fed by a combination of a power divider and a radiator. The proposed antenna can exactly operate on dual-frequency. The designed CTS array antenna is simulated by HFSS. The simulated results show that S11 is less than -10 dB from 75 GHz to 80 GHz and from 85 GHz to 89 GHz. The peak gain reaches 28.6 dB at 78.8 GHz and 28.4 dB at 87.5 GHz. Antenna aperture efficiency is higher than 50% and the main beamwidth of antenna is about 4.4°. |
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