新型双极化超宽带交叉偶极子设计  

The Design of a Novel Dual-Polarized UWB Crossed Dipole

作　　者：廖梁兵 陈星[1] LIAO Liangbing;CHEN Xing(College of Electronic and Information Engineering, Sichuan University, Chengdu 610064, China;Southwest Institute of Electronic Technology, Chengdu 610000, China)

机构地区：[1]四川大学电子信息学院,四川成都610064 [2]西南电子技术研究所,四川成都610000

出　　处：《压电与声光》2022年第3期474-477,共4页Piezoelectrics & Acoustooptics

基　　金：中国电波传播研究所稳定支持科研经费资助项目(No.A132101W09)。

摘　　要：基于磁电偶极子天线的Γ型耦合馈电结构,该文设计了一款具有轴向辐射特性的轻薄超宽带双极化交叉偶极子天线。通过正交放置两个Γ型耦合馈电结构和两对环形电偶极子单元,获得了双线极化特性。Γ型耦合馈电结构将同轴线内的电磁能量引导至距离金属反射平板上方λ/4(λ为波长)处的电偶极子,实现了轴向辐射。经过加工和测试表明,该天线的相对阻抗带宽为83.9%(1.35~3.30 GHz),带宽内具有稳定的轴向辐射特性,其轴向增益从7.9 dBi到8.6 dBi变化。结果表明,测试和仿真结果吻合良好,证明了该设计的有效性。Based on theΓ-shape feeding structure of magnetoelectric dipole antenna,a thin and light-weight dual-polarized ultra-wideband(UWB)crossed dipole antenna with unidirectional radiation is presented.The dual-polarization is obtained by placing twoΓ-shape feeding structures and two pairs of ring dipoles orthogonally.TheΓ-shape feeding structure guides the electromagnetic energy in the coaxial line to the electric dipole at theλ/4 wavelength above the metal reflection plate;as a result,a unidirectional radiation is realized.The processing and testing results show that the relative impedance bandwidth of the proposed antenna is up to 83.9%(from 1.35 GHz to 3.30 GHz),and has stable unidirectional radiation is realized within the bandwidth,and its axial gain varies form 7.9 dBi to 8.6 dBi.The test and simulation results are in good agreement,which proves the effectiveness of the design.

关 键 词：交叉偶极子 Γ型耦合馈电 超宽带 双线极化 环形 

分 类 号：TN82[电子电信—信息与通信工程]