| 引用本文: | 吴国成，吴杰，王光明，周义峰，吴瑞. 宽带低交叉极化超材料漏波天线的设计[J]. 雷达科学与技术, 2019, 17(2): 225-231.[点击复制] |
| WU Guocheng, WU Jie, WANG Guangming, ZHOU Yifeng, WU Rui. Design of Metamaterial Based Leaky-Wave Antenna with Wideband and Low Cross-Polarization[J]. Radar Science and Technology, 2019, 17(2): 225-231.[点击复制] |
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| 摘要: |
| 基于基片集成波导结构提出了一种新型双层电磁超材料单元，并验证了其左手特性。将超材料单元应用于漏波天线的设计，所设计的天线由15个双层电磁超材料单元组成。将设计好的天线进行加工测试，测试与仿真结果吻合较好，表明漏波天线的工作频带为7.20~12.70GHz，在工作频带内可实现从后向-78°到前向+80°的连续主波束扫描，天线在工作频带内的测试增益均大于10dBi，峰值增益为15.2dBi，3dB增益带宽达到50.2%。此外，该漏波天线具有很低的交叉极化电平，交叉极化始终比主极化低至少30dB。相比于新近文献报道的同类型超材料漏波天线，所设计的天线具有更加优越的电气性能。 |
| 关键词: 双层电磁超材料单元 漏波天线 稳定增益 低交叉极化 |
| DOI：DOI:10.3969/j.issn.1672-2337.2019.02.017 |
| 分类号:TN828.5；TN822+.8 |
| 基金项目:国家自然科学基金（No.61372034） |
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| Design of Metamaterial Based Leaky-Wave Antenna with Wideband and Low Cross-Polarization |
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WU Guocheng, WU Jie, WANG Guangming, ZHOU Yifeng, WU Rui
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1.Unit 95174 of PLA, Wuhan 430040, China;2.Air and Missile Defense College, Air Force Engineering University, Xi’an 710051, China
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| Abstract: |
| A novel double-layered wideband metamaterial based on substrate integrated waveguide structure is proposed and its left-handed property is investigated in this paper. A leaky-wave antenna, which consists of 15 units of the proposed double-layered metamaterial, is designed, fabricated and measured. The measured and simulated results are in good agreement each other, indicating that the designed antenna achieves continuous beam scanning property from backward -78° to forward +80° within its operating frequency band of 7.20~12.70GHz. The measured antenna gain is better than 10dBi within its operating frequency band, and the measured 3dB gain bandwidth is 50.2% with maximum gain of 15.2dBi. Moreover, the cross-polarization of the designed antenna remains at a level of more than 30dB below the co-polarization across the entire radiation region. Compared with some related works in the recent reports, this leaky-wave antenna can offer the most wonderful performance. |
| Key words: double-layered metamaterial unit leaky-wave antenna consistent gain low cross-polarization |
