【2017年整理】毕设论文_小型化宽带基站天线阵列单元设计.doc

班 级 学 号 本科毕业设计论文 题 目 学 院 电子工程学院 专 业 电子信息工程 学生姓名 导师姓名  毕业设计（论文）诚信声明书 本人声明：本人所提交的毕业论文《》是本人在指导教师指导下独立研究、写作的成果，论文中所引用他人的无论以何种方式发布的文字、研究成果，均在论文中加以说明；有关教师、同学和其他人员对本文的写作、修订提出过并为我在论文中加以采纳的意见、建议，均已在我的致谢辞中加以说明并深致谢意。 本论文和资料若有不实之处，本人承担一切相关责任。 论文作者： （签字） 时间： 年 月 日 指导教师已阅： （签字） 时间： 年 月 日 摘 要 ，基站天线正朝着多频带、小型化的趋势发展而具有体积小、重量轻、易于加工和集成特点的微带天线则成为了基站天线设计的首选。因此，研制具有宽频带、小尺寸、低剖面的基站天线成为了当前的主要课题。 VSWR≤2，极化和端口隔离度都大于18.2dB。 关键词： 宽频带 双极化 隔离度 ABSTRACT With mobile communications, the rapid development of technology, the system has also increasingly higher demand on complexity. Antenna, as an important component, also faces severe test. Presently, base station covers more and more widely, base station antenna is developing towards the trend of multi-band and miniaturization. the microstrip antenna which has the advantages of small volume, light weight, easy processing and integrated characteristics. Nowadays, microstrip antenna has become the first choice for base station antenna design because of its Small size, light weight, ease of processing and integrated characteristics. Therefore, to develop a base station antenna which has wide band, small size, low profile, dual-polarized is becoming the main topics in the recent research. The thesis mainly researches the antenna in mobile communication, designed an array antenna unit which includes broadband communications, dual-polarized, high isolation for the fourth generation mobile , in addition, making a comparative analysis involved in different forms of antennas about standing wave ratio ,isolation, radiation pattern and other parameters. This paper has discussed and summarized introduces the theory knowledge of microstrip antenna firstly, then also studied the design methods of microstrip antenna and how to improve the antenna performance including several different forms of microstrip antenna. Fina