Automated Framework for Time-Domain Piecewise-Linear Fitting Method Based on Digital Wave Processing of $S$ -Parameters
| Autor: | Giulio Antonini, Tom Dhaene, Luigi Lombardi, Piero Belforte, Domenico Spina |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer science
020208 electrical & electronic engineering Phase (waves) 02 engineering and technology Convolution Piecewise linear function Step response Frequency domain 0202 electrical engineering electronic engineering information engineering Scattering parameters Time domain Electrical and Electronic Engineering Algorithm Impulse response |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers. 67:235-248 |
| ISSN: | 1558-0806 1549-8328 |
| Popis: | An innovative full time-domain macromodeling technique for general, linear multiport systems is described. The methodology is defined in a digital wave framework and time-domain simulations are performed via an efficient method called Segment Fast Convolution (SFC). It is based on a piecewise-constant (PWC) model of the impulse response of scattering parameters, computed starting from a piecewise-linear fitting of their step response (PWLFIT). Such step response is directly available from time-domain reflectometer measurements (TDR/TDT) or equivalent simulations. The model-building phase is performed in a fast automated framework and an analytic formulation of computational efficiency of the SFC with respect to the standard time-domain convolution is given. Two application examples are used to verify the PWLFIT performance and to perform a comparison with macromodeling methods defined in the frequency-domain, such as Vector Fitting (VF). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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