摘要
本文提出并设计了一种毫米波平面共口径阵列天线. 通过集成基板集成波导 (SIW) 和带状线激励网络, 将K波段天线嵌入至Ka波段天线内部. 通过共享辐射口径减小天线尺寸, 降低其剖面高度. 所设计的Ka波段天线通过SIW腔体表面的一对平行缝隙辐射水平极化波, 而K波段天线通过SIW腔体表面的蝴蝶结形缝隙辐射垂直极化波. 两个波段的阵列天线可以共享物理口径进行辐射, 且在两个频段都具有很好的隔离度. 为了验证以上设计思想, 我们设计了一款中心工作频率为19 GHz和30 GHz的8×8共口径阵列天线, 并采用多层印刷电路板 (PCB) 技术进行加工制造. 实测结果表明, 该天线在K波段和Ka波段的−10 dB阻抗带宽分别为7.73%和大于20%, 相应的隔离度分别高于60 dB和44 dB. 所提出的共口径天线具有小尺寸、 低剖面和高隔离度的优点, 可应用于小型化毫米波无线通信系统.
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Zhangcheng HAO proposed the idea. Yuyan CAO designed and measured the antenna, processed the experimental data, and drafted the paper. Zijun GUO helped design the antenna and organize the paper. All the authors revised and finalized the paper.
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Yuyan CAO, Zijun GUO, and Zhangcheng HAO declare that they have no conflict of interest.
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Project supported by the National Natural Science Foundation of China (No. 62131008) and the Fundamental Research Funds for the Central Universities, China (No. 2242022k30003)
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Cao, Y., Guo, Z. & Hao, Z. Planar dual-polarized millimeter-wave shared-aperture array antenna with high band isolation. Front Inform Technol Electron Eng 23, 1568–1578 (2022). https://doi.org/10.1631/FITEE.2200122
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DOI: https://doi.org/10.1631/FITEE.2200122