频率与方向图可重构锯齿偶极子微带天线的设计  

Design of reconfigurable frequency and radiation pattern saw-tooth-dipole micro-strip antenna

作　　者：曹卫平[1] 蔡彬[1] 

机构地区：[1]桂林电子科技大学认知无线电与信息处理重点实验室,广西桂林541004

出　　处：《桂林电子科技大学学报》2014年第4期264-267,共4页Journal of Guilin University of Electronic Technology

基　　金：国家自然科学基金(61361005)

摘　　要：为了满足无线通信高速数据需求和微带天线的小型化,设计了一种频率和方向图可重构锯齿偶极子微带天线,该天线包括2个锯齿状振子,分别印制在介质板的两面。通过改变锯齿振子上PIN二极管的工作状态,使天线的局部结构和表面电流分布发生变化,实现天线频率和方向图的可重构。实验结果表明,该天线在1.88～2.85GHz频段内实现可重构的功能,覆盖了主要的无线通信频带。在工作频段内,天线的H面方向图具有全向特性,E面方向图实现了波束扫描。In order to meet high date rate wireless services and the miniaturization of the micro-strip antenna,a printed planar micro-strip fed saw-tooth dipole antenna with reconfigurable frequency and pattern properties is designed for wireless com-munication.The structure consists of two saw-tooth dipoles,each one is printed on one substrate layer.The saw-tooth di-pole can achieve its frequency and pattern reconfigurable function by changing the operating state of the PIN diode to trans-form the local structure and the distribution of surface current.Experimental results show that the antenna can achieve the function reconfigurable in the range of 1.88-2.85 GHz,which covers the main wireless communication band.During the op-erating band,an omni-directional radiation pattern in H-plane is well reached and the beam scanning in E-plane pattern is a-chieved.

关 键 词：可重构天线 锯齿偶极子 PIN二极管 波束扫描 无线通信 

分 类 号：TN82[电子电信—信息与通信工程]