一种新型的双频段超宽带双极化天线  

Novel dual-band ultra-wideband dual-polarized antenna

作　　者：李直[1] 徐自强[1] 向东红[1] 李元勋[2] 吴孟强[1] 

机构地区：[1]电子科技大学能源科学与工程学院,四川成都611731 [2]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《电子元件与材料》2016年第11期25-29,共5页Electronic Components And Materials

基　　金：国家自然科学基金资助项目(No.61301052);中央高校基本科研业务费资助(No.ZYGX2015J095)

摘　　要：提出一种集成双频段、双极化、超宽带特性的新型天线。该天线通过双枝节结构形成双频,利用多节阻抗匹配的巴伦馈电、宽缝形式对称U型辐射面结构实现超宽带,并采用介质板±45°正交以及合理馈电和交叉位置布局形成双极化。结果表明,这款天线既可工作在824~960 MHz的全2G通信频段内,又可工作在1.7~2.7 GHz的全3G通信频段内,并且在两个频段内回波损耗≤–14 d B,两端口间带内隔离度≤–30 d B,交叉极化电平≤–20 d B。A new dual-band ultra-wideband dual-polarized antenna was designed. The dual band was formed by double branch structure. The ultra-wideband was formed by Balun feeding structure of multi-section impedance matching and symmetrical U-shaped radiating surface structure with opening wide slot. The dual polarization was formed by using ±45 ° orthogonal placement of the dielectric plates, reasonable feeding and cross position layout. The results show that this antenna works in both the whole frequency band of 824-960 MHz in 2G communication, and the whole frequency band of 1.7-2.7 GHz in 3G communication. And in the frequency ranges, the return losses are basically less than -14 dB, the isolation zones between the two ports are less than -30 dB, and the cross polarization levels are less than -20 dB.

关 键 词：双频段 超宽带天线 双极化 巴伦馈电结构 正交 通信频段 

分 类 号：TN823[电子电信—信息与通信工程]