一种S频段低面高增益电磁带隙结构圆极化天线  

Design of Low-Profile Circular Polarized Antenna With Gain Enhancement Based on EBG Structure

作　　者：杨帅 葛翼诗 吴群[2] Yang Shuai(China Academic Electronic Information and Technology,Beijing 100041)

机构地区：[1]中国电子科学研究院,北京100041 [2]哈尔滨工业大学,哈尔滨150001

出　　处：《测控与通信》2023年第3期17-20,共4页

摘　　要：本文提出了1种基于电磁带隙结构反射的低剖面高增益圆极化微带印刷天线。通过在介质板两侧正交的2个折叠微带振子上加载电磁带隙结构反射面,控制相移特性形成所需要的指向性波束。加载电磁带隙结构在特定的频率范围和角度范围内获得相移补偿,使得该微带天线的轴比特性得到充分的改善。仿真实验表明,该圆极化微带天线能够在1.7~2.2GHz实现8dBi以上增益,相比于无加载电磁带隙结构增益提高了4dB,剖面高度仅为8mm。其高增益特性应用可以取代传统的抛物面天线。A low profile circular polarized microstrip antenna with gain enhancement based on EBG structure is proposed in this paper.By loading the EBG structure reflector on two folded microstrip oscillators orthogonal to both sides of the dielectric plate,a certain directional beam is formed by constructing a certain phase shift characteristic,thus high gain characteristics similar to parabolic antennas is achieved.Due to the phase shift compensation of the electromagnetic bandgap structure in a certain frequency range and angle range,the axial ratio characteristics of the microstrip antenna have been improved.The circularly polarized microstrip antenna based on this EBG reflection structure can achieve a gain of more than 8dBi at 1.7GHz~2.2GHz,which is 4dB higher than that of the unloaded EBG structure,and the profile height is only 8mm..

关 键 词：低剖面 圆极化 电磁带隙结构 微带天线 

分 类 号：TN8[电子电信—信息与通信工程]