一种宽频带方形槽圆极化天线设计  

Design of a Broadband Square-slot Circularly Polarized Antenna

作　　者：曹振华 刘雯雯[2] 张秀平 CAO Zheng-hua;LIU Wen-wen;ZHANG Xiu-ping(New Cape Electronics Co.,Ltd.,Zhengzhou 450001,China;School of Mechanics and Safety Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]新开普电子股份有限公司,郑州450001 [2]郑州大学力学与安全工程学院,郑州450001

出　　处：《微波学报》2023年第4期18-22,共5页Journal of Microwaves

摘　　要：文中提出了一种加载微扰元素的新型宽频带圆极化方形槽天线,它由一个倒L型微带馈电线、一个L型枝节、一对矩形槽和一个方形槽地板组成。用这些缝隙槽和枝节作为微扰元素来调节天线表面电流分布,可以激发出多个圆极化谐振模式,从而实现了宽频带圆极化辐射。为了验证其合理性,加工并测试了天线模型。测量结果表明,实测小于-10 dB的阻抗带宽为74.9%,小于3 dB的轴比带宽为84.7%。此外,测量和仿真的峰值增益分别为4.88 dBi和4.86 dBi。因此,文中设计的圆极化方形槽天线具有宽的圆极化带宽特性。The antenna is consisted of an inverted L-shaped feeding line,an L-shaped strip,a pair of rectangular slots and a square-slot ground.The numerous circular polarization resonant modes are excited simultaneously using these slots and patches as perturbation elements to change the surface current distribution.To verify this rationality,an antenna prototype is printed and manufactured.The measured results indicate the -10dB impedance bandwidth (IBW) is 74.9% and 3 dB axial ratio bandwidth (ARBW) is 84.7%.Furthermore,the measured peak gain is 4.88 dBi,and the simulated peak gain is 4.86 dBi.Therefore,the presented antenna features wide circular polarization bandwidth (CPBW).

关 键 词：宽带天线 圆极化天线 方形槽接地板 

分 类 号：TN821.1[电子电信—信息与通信工程]