一种波束可调的平面印刷八木天线

发布时间：2018-01-24 13:48

本文关键词： 八木天线平面印刷天线 PIN二极管波束可调　出处：《上海大学学报(自然科学版)》2014年01期 　论文类型：期刊论文

【摘要】：利用八木天线的高定向性,设计了一种6个方向波束可调的平面八木印刷天线.天线的主辐射振子采用新颖的梯形结构来增加工作带宽,将其两臂置于介质板两侧,仅需在地板上的每个辐射振子臂与地板之间加载一个PIN(positive-intrinsic-negative)二极管开关,就可控制天线单元的工作状态,即天线的辐射方向,而无需专门设计偏置电路.测试结果与仿真结果吻合较好,研究结果表明天线输入端反射系数小于-10dB带宽为400MHz.在30°,90°,150°,210°,270°,330°等主辐射方向上可重构天线增益为7.5 dB,半功率波瓣宽度小于60°.该天线能够实现6个不同方向的扫描,具有良好的方向性,可用于小基站或其他无线通信系统中.
[Abstract]:Based on the high orientation of the Yagi antenna, a planar Yagi printed antenna with six directional beams adjustable is designed. The main radiator of the antenna uses a novel trapezoidal structure to increase the bandwidth. The two arms are placed on both sides of the dielectric plate. Simply load a pinnpositive-intrinsic-negativediode switch between each radiator arm on the floor and the floor. The working state of the antenna unit is controlled, that is, the radiation direction of the antenna is controlled, and the bias circuit is not specially designed. The test results are in good agreement with the simulation results. The results show that the reflection coefficient at the input end of the antenna is less than -10dB bandwidth is 400 MHz, and at 30 掳/ 90 掳(150 掳) / 210 掳/ (270 掳). The gain of the reconfigurable antenna is 7.5 dB and the width of the half-power lobe is less than 60 掳in 330 掳equal main radiation direction. The antenna can scan in six different directions and has good directivity. Can be used in small base stations or other wireless communication systems.
【作者单位】：上海大学通信与信息工程学院;
【基金】：国家自然科学基金资助项目(61271062)
【分类号】：TN823.17
【正文快照】： 现代通信技术的发展对通信系统的小型化提出了更高的要求.可重构天线能够把几种不同的天线功能集成在一副天线上实现,有效地提高了通信系统的性能,实现了系统的小型化.方向图可重构天线用于需要实时改变方向图的场合,如对地面移动目标的搜索、实时跟踪等.该类天线可以提高系统

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