摘要
提出一种新型PBG-CPW传输线,并对其有效介电常数、相速、特性阻抗等基本特性进行了研究。该结构由多段CPW和PS CPW首尾相接而成,相比传统CPW具有更高灵活性。PBG-CPW具有禁带特性,但在一定条件下可等效为均匀传输线,本文采用传输线模型分析了该传输线的色散特性,给出了简化电路模型,并在此基础上讨论了具有单侧PBG的非对称PBG-CPW结构的特性和应用,从而对所提出模型进行验证。
A novel PBG-CPW （Photonic Band Gap-Coplanar Waveguide）transmission line is proposed.It is composed of many CPW and PS CPW （Partial Substrate Coplanar Waveguide）stubs,which joined together end to end.Effective dielectric constant,phase ve-locity and characteristic impedance of the PBG-CPW are analyzed with theoretical method. Proposed structure exhibits better design flexibility and photonic band-gap characters.Under certain conditions,PBG-CPW can be regarded as uniform transmission line.Dispersion char-acter of the proposed structure is analyzed with transmission line method while the simplified circuit model is given.Characters of asymmetric PBG-CPW structure and its applications are discussed,which is also used to verify the proposed model.
出处
《全球定位系统》
2014年第2期60-63,70,共5页
Gnss World of China
