ImprovementfortheTransitionDesignofMicrostrip-to-Substrate
IntegratedWaveguide
ShuaiZhu,XingxingHuang,LiangChen,XiaoguangWang,
SchoolofMicroelectronicsandSolid-StateElectronics,
UniversityofElectronicScienceandTechnologyofChina
Abstract:Substrateintegratedwaveguide(SIW)asanewmicrowavetransmissionline，itmakesapossibilitythat
microwavecircuitsandsystemscanbefabricatedontheplanarstructure.Inordertoachievetointegrationof
passiveandactivedevices,thetransitiondesignofmicrostrip-to-SIWisveryimportant.Inthispaper,several
transitionmethodsarestudiedandimprovedbysimulationsoftware,theinfluenceofmicrowavelengthonreturn
lossisanalyzed,andalowreflectioncoefficientmethodisobtained,comparedwiththeothertransitionmethods,
themeritsofthismethodturnmorenoticeablewiththelengthincreases.
KeyWords:substrateintegratedwaveguide(SIW);transitionmethod;filletcurve;returnloss
微带线与基片集成波导转换设计的改进
朱帅，黄星星，陈良，汪晓光
电子科技大学微电子与固体电子学院
【摘要】基片集成波导(SIW)作为一种新型的微波传输线，它使微波电路与系统实现平面化成为了可能。为了便于各种有源
和无源器件的集成，SIW与微带线的过渡设计变得十分重要。本文利用仿真软件对几种过渡方式进行研究和改进，分析了
过渡段长度对回波损耗的影响，并得到了一种低反射系数的过渡方式,相比于其它的过渡方式，随着过渡段长度的增加，这
种方式的优点更加突出。
关键词：基片集成波导（SIW）；过渡方式；倒圆弧；回波损耗
suchasexponential,Klopfenstein,triangular,allofthe
1.INTRODUCTION
expressionsarerelatedwiththeimpedancedirectly.In
Thesubstrateintegratedwaveguide(SIW)asanthispaper,someexpressionsforthevariationofwidth
emergingp