Circuit model for given reflectance data constructed with mixed lumped and distributed elements for high speed/high frequency communication systems


Yarman B., Sengul M., Kilinc A., Aksen A.

4th International Workshop on Multidimensional Systems (NDS 2005), Wuppertal, Germany, 10 - 13 July 2005, pp.12-18 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/nds.2005.195323
  • City: Wuppertal
  • Country: Germany
  • Page Numbers: pp.12-18

Abstract

In this paper, a reflectance-based "non linear interpolation method" is presented to model the measured or computed data, obtained from a "Passive one-port physical device" using mixed lumped and distributed elements. Mixed element model is constructed with cascade connection of series inductors [L], commensurate transmission lines or so called Unit Elements [UE] and shunt capacitors[C]. Basis of the new model rests on the numerical generation of the scattering parameters of the lossless two-port constructed with cascade connection of simple [L]-[UE]-[C] elements which describes a lossless 2-port in Darlington sense. The new modeling technique does not require direct optimization of the circuit elements of the selected topology. Rather, two-variable reflection coefficient is directly determined by means of a non linear but "convergence guaranteed" interpolation process to best fit the given data. A low-pass filter input reflection coefficient modeling example is included to exhibit the utilization of the proposed modeling method.