文档介绍：摘要
本文主要研究了多层结构微带谐振器带通滤波器的实现以及利用基片集成波导(SIW)
技术实现单层、双层、三层和四层 SIW 带通滤波器。在研究基片集成波导技术时,设计了
基片集成波导—微带线转换器、基片集成波导—共面波导—微带线转换器,这可以用来测
试基片集成波导器件。
本文对开环谐振器结构的特性进行了理论分析,给出了开环谐振器电耦合、磁耦合和
混合耦合特性的分析。设计了双层结构微带开环谐振器实现的四腔切比雪夫带通滤波器和
双层结构微带开环谐振器实现的准椭圆函数带通滤波器。通过仿真结果发现,应用双层结
构微带开环谐振器设计的带通滤波器能够满足滤波要求,且满足了小体积要求。
本文利用方形基片集成波导谐振腔和圆形基片集成波导谐振腔设计了单层两腔体级
联 SIW 带通滤波器、双层两腔体耦合 SIW 带通滤波器、三层三腔体耦合 SIW 带通滤波器、
四层四腔体耦合 SIW 带通滤波器和双层四腔体耦合 SIW 带通滤波器等。通过具体的设计
过程和仿真结果可以发现利用多层结构设计的 SIW 带通滤波器的性能比单层结构 SIW 带
通滤波器的性能接近或更好一些,而相应的多层结构带通滤波器的体积却更小,从而满足
了无线通信中小体积的要求。
关键字:多层结构带通滤波器开环谐振器基片集成波导波导谐振器
I
Abstract
The implementation of bandpass filter using the multilayer structure of microstrip resonator
and the implementation of multi-layer bandpass filter which based on the substrate integrated
waveguide (SIW) technology was presented in this thesis. Besides, the SIW-microstrip transition
and the SIW –CPW-microstrip transition have been designed to integrate the ponents
with other microstrip circuits or measure the ponents expediently.
Theoretical analysis has been presented for the open-loop resonator structure. And the
electric coupling, ic coupling and mixed coupling characteristics of the open-loop
resonator are investigated. Furthermore, multi-layer structure can be used to design Chebyshev,
Elliptic function bandpass filter and so on. And this thesis presents the fourth-order Chebyshev
bandpass filter and the four Poles Quasi-Elliptic bandpass Filter. parison, size reduction
of about 50% can be achieved by using the multi-layer structure.
Based on the square and circular SIW resonator, two-cavity cascaded single-layer band-pass
filter, two-cavity coupled double-layer bandpass filter, three-cavity coupled three-layer bandpass
filter, four-cavity coupled four-layer bandpass filter, and four-cavity coupled double-layer
bandpass filter have been designed. By analyzing the results of these filters, it found that the
performance of the multi-layer SIW bandpass fil