双频 MIMO 天线的解耦设计目 录中 文 摘 要.........................................................................................................................................IABSTRACT.........................................................................................................................................II第一章 绪论.........................................................................................................................................11.1 课题研究的背景及意义.........................................................................................................11.2 国内外研究现状.....................................................................................................................21.2.1 天线的缺陷地解耦......................................................................................................21.2.2 中和线技术解耦..........................................................................................................51.2.3 添加枝节结构解耦......................................................................................................81.2.4 采用谐振结构解耦......................................................................................................91.2.5 采用解耦网络解耦....................................................................................................101.3 论文的主要工作及结构安排...............................................................................................12第二章 枝节解耦的 MIMO 天线......................................................................................................142.1 引言.......................................................................................................................................142.2 双频 PIFA 天线的设计.........................................................................................................152.2.1 天线结构.................................................................