Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. DifferentialLine Characterization Using MixedPort Scattering Parameters
 Institute of Electrical and Electronics Engineers IEEE; IEEE Microwave Theory and Techniques Society: IEEE MTTS International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2018 : 810 August 2018, Reykjavik, Iceland Piscataway, NJ: IEEE, 2018 ISBN: 9781538652046 ISBN: 9781538652039 ISBN: 9781538652053 S.126128 
 International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) <5, 2018, Reykjavik> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer IZM () 
Abstract
Highspeed transmission lines are commonly routed as differential lines to control sensitivity to noise on the reference planes at higher speeds. Differential lines are typically characterized in terms of mixedmode scattering parameters, as they provide insight into the behavior of differential and common signals, as well as the mode conversion among them. These mixedmode scattering parameters can be mathematically obtained from singleended parameters, which can for example be measured with a 4port vector network analyzer. There has been recent efforts to develop extended or modified versions of mixedmode scattering parameters, especially for tightlycoupled lines. This can be a point of confusion in interpreting the behavior of differential lines. In this paper we introduce the mixedport scattering parameters, which do not suffer from any such ambiguous definitions. Mixedport scattering parameters are defined based on common and differential port excitations, allowing a simpler interpretation than their mixedmode counterparts, without the need for defining even, odd, common, or differentialmode impedances. As such, mixedport scattering parameters can be used to analyze the performance of a general differential network, certainly including coupled or asymmetrical lines, without any ambiguity.