文档介绍：国防科学技术大学
硕士学位论文
基片集成波导的特性及应用研究
姓名:张帆
申请学位级别:硕士
专业:电子科学与技术
指导教师:柴舜连
2010-11
国防科学技术大学研究生院硕士学位论文
摘要
基片集成波导是一种新型波导结构,不但具有矩形波导低损耗、低辐射、高 Q
值以及高功率容量的优点,还具有微带体积小、容易集成的优点,应用前景广阔。
本文在分析基片集成波导特性的基础上,设计一种采用基片集成波导馈电的微带
天线阵。
论文首先对基片集成波导传播特性进行分析,利用两线法提取传播常数α、β,
通过对α的分析得到基片集成波导等效于矩形波导的约束条件,然后在等效宽度
公式的基础上提出基片集成波导的设计原则和设计方法。将设计的基片集成波导
用作微带天线的馈电网络,设计了一个 18×8 的基片集成波导馈电微带天线阵。对
馈电网络的设计以耦合结构的分析为基础,通过改变耦合结构缝隙偏移量与谐振
长度实现 H 面的泰勒加权,对串馈微带线阵的设计采用阻抗变换段加权的方法实
现 E 面的泰勒加权,并且对全阵进行了仿真,仿真结果达到技术指标的要求。最
后对基片集成波导传播特性进行测试,验证了与矩形波导相类似的传播特性;对
基片集成波导馈电微带天线阵进行测试,证明天线的性能满足设计要求。
关键词:基片集成波导,两线法,耦合结构,馈电网络,微带天线
第 i 页
国防科学技术大学研究生院硕士学位论文
ABSTRACT
Substrate integrated waveguide (SIW), a novel waveguide structure taking
advantage of both of the rectangular waveguide’s low loss, low radiation, high Q factor
and high power capacity and microstrip’pact and easy integration, has a bright
future in applications. A SIW fed microstrip antenna array is designed in the thesis on
the basis of analyzing SIW’s characteristics.
Firstly, SIW’s propagation characteristics are analyzed and propagation constant α,
β is calculated using multi-line method. Secondly, the precondition for SIW’s
equivalent to rectangular waveguide is derived from the analysis of α, and the principles
and method to design a SIW is proposed on the basis of formula of effective width.
Utilizing SIW as microstrip’s work, a SIW fed microstrip antenna array consist
of 18x8 elements is designed. Then the work’s design is achieved by analyzing
the coupling structure and adjusting coupling structure slot offset as well as the
resonance length to implement Taylor-weighted in H-plane. And the series-fed
microstrip antenna array’s design is achieved by using impedance transformation
segments-weighted to implement Taylor-weighted in E-plane. In the end, the two parts
were integrated to meet antenna’s design criteria. Tests for propagation characteristics
of SIW were carried out to testify its