双频宽带双极化定向电磁偶极子天线设计

发布时间：2018-03-05 05:13

本文选题：双频带天线　切入点：双极化天线　出处：《微波学报》2017年01期 　论文类型：期刊论文

【摘要】：设计了一款双频带宽带双极化定向电磁偶极子天线。首先,采用最基本的电磁偶极子天线模型,通过对偶极子天线的形状进行调整以及增加Г形寄生枝节实现了双频段单极化定向电磁偶极子天线。其次,将两个单极化电磁偶极子天线十字交叉放置。最后,通过两个高度不同的Г形探针分别对两个天线进行耦合馈电,实现双频宽带双极化定向辐射特性。根据仿真结果,对天线模型进行了加工和测试。仿真和实测结果表明:天线在低频段0.8~0.96 GHz和高频段1.7~2.7 GHz内反射系数的模值均小于-10 d B,所对应端口隔离度分别大于20 d B和25d B,天线的测试峰值增益在低频和高频段分别为5.5 d Bi和8.2 d Bi。该天线可应用在无线通讯系统中。
[Abstract]:A dual-band broadband dual-polarization oriented electromagnetic dipole antenna is designed. Firstly, the most basic electromagnetic dipole antenna model is used. By adjusting the shape of the dipole antenna and increasing the parasitic branch of the dipole antenna, the dual-band single-polarization directional electromagnetic dipole antenna is realized. Secondly, the cross of the two single-polarization electromagnetic dipole antennas is placed. Finally, The two antennas are fed by two probes with different heights to realize the dual-frequency wideband and dual-polarization directional radiation characteristics. The antenna model is machined and tested. The simulation and experimental results show that the reflection coefficient of the antenna is less than -10 dB in the low frequency range of 0.8 ~ 0.96 GHz and in the high frequency band of 1.7 ~ 2.7 GHz, and the corresponding isolation degree is more than 20 dB and 25 dB, respectively. The measured peak gain of the antenna is 5.5 d Bi and 8.2 d Bi at low frequency and high frequency respectively. The antenna can be used in wireless communication systems.
【作者单位】：西安电子科技大学天线与微波技术国家重点实验室;
【基金】：中兴通讯研究基金(CON1608280003)
【分类号】：TN821.4

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