Now showing items 1-4 of 4

  • Analytic solution of the Feldtkeller equation 

    Authors:Şengül, Metin Y.
    Publisher and Date:(Elsevier GMBH Urban & Fischer Verlag, 2009)
    In every reflectance-based application like broadband matching circuit modeling etc. a nonlinear equation following from energy conservation the Feldtkeller equation must be solved in order to obtain real networks. In the literature however there is no analytic solution available but only numerical solutions. Consequently the resulting error depends on the accuracy of the numerical tools. In this paper an analytic solution is proposed which is based on the modified ABCD-parameters of a lossless ...

  • Foster impedance data modeling via singly terminated LC ladder networks 

    In this work a lossless model is developed for the given Foster impedance data. In the model a 2-port short-or open-terminated LC ladder is used. After applying the proposed algorithm a realizable driving-point reactance function that fits the given data is obtained. Next this function is synthesized resulting in the desired model. In the algorithm there is no need to select a circuit topology for the model. Two examples are given to illustrate the utilization of the proposed modeling algorithm.

  • Reflectance-based Foster impedance data modeling 

    Authors:Şengül, Metin Y.
    Publisher and Date:(Fachverlag Schiele Schon, 2007)
    A reflectance-based method is presented to model a set of given Foster impedance data as a lossless singly terminated two-port consisting of lumped-elements in short or open termination. The basis of the new method rests on the interpolation of the given data as a realizable bounded-real (BR) reflection function. The desired circuit model is obtained by synthesizing this function. An algorithm to generate the circuit model is presented and an example is included which illustrates the utilization ...

  • Synthesis of cascaded lossless commensurate lines 

    A scattering transfer matrix factorization based algorithm for cascaded lossless commensurate line synthesis is presented. The characteristic impedances of the extracted commensurate lines and the reflection factors of the remaining networks are formulated in terms of reflection factor coefficients of the whole circuit. There is no need to use root search routines so as to cancel common terms to get degree reduction. The formulation. of the method is explained. and an example is included to ...