5.8GHz高增益圆极化方形四环天线的研究  

Investigation of 5.8 GHz circularly polarized four-loop antenna for gain enhancement

作　　者：杨倩[1] 张小苗[1] 白雪[1] 李晋阳[1] 

机构地区：[1]西安电子科技大学天线与微波技术国防科技重点实验室,陕西西安710071

出　　处：《电波科学学报》2010年第2期368-372,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(No.60671056)

摘　　要：基于环天线表面行波电流分布产生圆极化辐射波的原理,以降低馈电复杂度、简化天线结构和提高天线增益为目标,提出一种新型四环圆极化天线。此四环天线结构紧凑,仅在原二环天线的基础上引入另一对二环,不增加原二环天线的尺寸,能将天线增益比二环平均提高2 dB,达到高增益的性能。使用宽带渐变巴伦并引入匹配枝节,实现了宽频带阻抗匹配。制作实物检验了仿真的有效性。According to the theory of loop antenna having travelling-wave current distribution to radiate circularly polarized waves,a novel four-loop antenna is introduced to reduce the complexity of the feed network,simplify the antenna structure and increase the gain.Adding another pair of loops to the original two,it has an impact size,without enlarging the original dual-loop antenna size.It can increase the gain by about 2 dB in average than two-loop antenna,realize the high gain characteristic.It uses a continuous transmission line taper with matching stubs as balun to realize wide band impedance matching.A four-loop antenna is manufactured to verify the simulated results.

关 键 词：圆极化天线 四环天线 高增益天线 

分 类 号：TN820.11[电子电信—信息与通信工程]