Analysis and Design of Printed Antenna Based on Open Slot

印制缝隙天线以其低剖面易集成等特点在现代无线通信系统，尤其是移动终端中得到广泛应用。本文以开口缝隙天线为基本单元，对其馈电方式的影响进行了讨论后，构建一种三频缝隙天线和一种四端口缝隙天线，以适用于移动终端或室内基站系统的应用。 对于开口缝隙天线，尤其是窄基板缝隙天线，其馈电方式易于影响天线的辐射特性。当采用微带线对开口缝隙天线进行耦合馈电时，受限于基板宽度的限制，终端短路微带线能在保持缝隙天线性能的前提下进行有效激励。而同轴线馈电时，当同轴线内导体与缝隙长度方向呈45°倾角时，易于实现谐振辐射的调整。上述两种馈电方式均能保证缝隙天线具有较高的辐射场极化纯度。而直接利用SMA接头对开口缝隙馈电...Printed slot antenna is widely used in modern wireless communication systems, especially mobile terminals for its low profile and other characteristics such as easy to integrate. In this paper, the effect of the feeding structure on the open slot antenna is discussed. A tri-band slot antenna and a four-port slot antenna are constructed to apply in the mobile terminal as well as indoor base station...学位：工学硕士院系专业：信息科学与技术学院_电磁场与微波技术学号：2312014115310