宽带多谐振偶极子天线设计
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TN821 + . 4

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国家自然科学基金(62071235)项目资助


Design of wideband and multi-resonant dipole
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    摘要:

    根据目前无线通信系统发展小型化与宽带化的趋势,设计了一款具有多谐振点的宽带偶极子辐射天线。 首先通过特征 模理论分析倒 T 型导体结构得到两个谐振模式;然后在不影响倒 T 型导体结构谐振特性的前提下,引入寄生谐振偶极子单元; 最后在 3 个谐振模式的电流共同最大处添加集总端口,同时激励 3 个谐振模式,得到 3 个谐振点的宽带谐振天线。 天线的仿真 与实测结果基本吻合,最终的工作带宽为 1. 8~ 2. 56 GHz (相对带宽为 34. 9%)。 由此,所设计的天线不仅结构简单,且性能方 面良好,可广泛应用于无线通信系统中。

    Abstract:

    According to the current trend of miniaturization and broadband development of wireless communication systems, a broadband dipole with multiple resonant modes is designed. First of all, the resonant modes of the inversed T-shaped conductor are analyzed by the theory of characteristic mode and the first two resonant modes are chosen; then a parasitic resonant dipole element is introduced without affecting the resonant characteristics of the inversed T-shaped conductor; finally, a lumped port is placed at the place that the three resonant modes have common maximum current value, these three resonant modes are excited simultaneously, and a wideband resonant antenna with three resonant modes is obtained. The simulated and measured results are in good agreement, with the final operating bandwidth of the antenna ranging from 1. 8 to 2. 56 GHz (34. 9% relative bandwidth). As a result, the designed antenna is not only simple in structure, but also good in performance and can be widely used in wireless communication systems.

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杨 国,肖如奇,沈飘飘,李梦洁,吴 文.宽带多谐振偶极子天线设计[J].电子测量与仪器学报,2023,37(5):136-142

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  • 在线发布日期: 2023-09-18
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