文档介绍：南京航空航天大学硕士学位论文
摘要
在本文中,我们将一种新型左手材料开口谐振环应用于微波器件的设计之中。由于其在小型
化方面具有良好的性能,所以在微波滤波器的设计中具有非常重要的意义。本文中首先对开口谐
振环传统的等效电路进行了改良,得到一种新的较为精确的等效电路模型。并通过仿真和理论分
析对这种等效电路模型进行了验证分析。在接下来的研究中我们分析了一组谐振环之间的耦合对
其谐振频率的影响模式,并以此为依据设计了一款利用谐振环的带通滤波器。
根据互补原理,谐振环的互补结构应该具有和普通谐振环类似的特性。因此,我们将谐振环
结构引入基片集成波导之中。通过在基片集成波导表面蚀刻谐振环结构来放大凋落波,从而在低
频处形成新的通带,以实现带通滤波器的设计。之后我们引入半模理论,将滤波器的尺寸在原有
基础上再次减小了一半。
最后,我们通过在同一片基片集成波导表面蚀刻不同的谐振环结构,设计了几款双通带滤波
器,并对其结构进行了仿真研究与分析。
关键词: 开口谐振环,等效电路,耦合效应,互补开口谐振环,基片集成波导,半模
I
开口谐振环及其在微带滤波器中的应用
ABSTRACT
A metallic planar particle, which is called spiral ring resonator (SRR), is introduced in this article as
a useful atom for artificial filter design and fabrication. A accurate equivalent circuit which provides the
most relevant properties and parameters of the SRR is presented. The equivalent circut is validated by
both ic simulation and experiments. Then we study the coupling effect between two SRRs
and planar microwave filter using coupled microstrip SRR is proposed. At last the substrate integrated
waveguide plementary split ring resonators (CSRRs) etched on the waveguide surface is
investigated in this article. The proposed structures allow the implementation of a forward wave passband
propagating below the characteristic cutoff frequency of the waveguide. By changing the orientations of
the CSRRs, which are incorporated in the waveguide surface and can be interpreted in terms of electric
dipoles, varied passband characteristics are observed. Then we described and realized a novel
guided-wave structure called half mode substrate integrated waveguide (HMSIW), which retains the
attractive performances of substrate integrated waveguide (SIW) with a nearly half reduction in size
compared to the original SIW version. We also design a two band bandpass filter by using different spiral
ring resonators.
Keywords: Spiral Ring Resonator, Equivalent Circuit, Coupling Effect, Complementary Split Rng
Resonator, Substrate Integrated