TD-LTE制式全频段偶极子天线设计  

Design of full-band dipole antenna for TD-LTE standard

作　　者：金魁[1,2] 左伟庆 张恩泽[3] 何小祥[1] 顾长青[1] 

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210016 [2]淮阴工学院电子信息工程学院,江苏淮安223003 [3]南京理工大学近程高速目标探测技术国防重点学科实验室,江苏南京210094

出　　处：《南京理工大学学报》2017年第4期539-544,共6页Journal of Nanjing University of Science and Technology

基　　金：中央高校基本科研业务费专项资金资助(30920140122005);江苏省普通高校研究生创新计划资助项目(CXLX11_0198)

摘　　要：针对当前移动通信系统广泛使用的多辐射单元集成天线存在的问题,本文设计并制作了一款双频带偶极子单体天线。设计中,利用天线臂赋形扩展了主谐振点处带宽、天线臂局部延展并折弯实现了双频点、电容加载实现了频点飘移,使该天线工作频段能够覆盖分时长期演进(Time division long term evolution,TD-LTE)通信技术的全部制式。在1.8~3.0 GHz频段内,天线的仿真和实测反射系数(S11)曲线吻合较好,对应TD-LTE制式所有业务频段的S11低于-10 d B;两个谐振点处的仿真和实测方向图吻合,符合偶极子天线的辐射特性;在工作频段内增益稳定。To solve the problem of the multiple radiation element integration antennas which are widely used in the mobile communication system, a dual-band dipole antenna is designed and fabricated in this paper. Utilizing the method of shaped-arm, the main resonance bandwidth is broadened; utilizing extension and bending of the antenna arms, dual band is realized; utilizing capacitor loading technology, the shift of frequency is realized. The above design make the operating bands cover TD-LTE standard of domestic 4G mobile communications. Simulated and experimental results of the reflection coefficient （ SI1 ） of the antenna are in good agreement in 1. 8 GHz 3. 0GHz. Tlie frequency mnge with Sl l of below -10 dB covei＇s all tlie Service bands of TD-LTE Standard, Simulated and expejimental rem its of radiation patterns at two resonance points are also iia good agreenient which accords with the radiation peifqiTaance of dipole antennas. Besides, the antenna has a stable gain over its operating bands.

关 键 词：天线臂赋形 分时长期演进 电容加载 双频点 

分 类 号：TN823[电子电信—信息与通信工程]