Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-27T14:20:16.118Z Has data issue: false hasContentIssue false
  • English
  • Français

Improvement of the envelope – transient S-parameters' simulation in circuit and system simulation

Published online by Cambridge University Press:  17 November 2011

Hassan Mehdi ,
Sebastien Mons ,
Abderrazak Bennadji ,
Edouard Ngoya  and
Raymond Quere
Hassan Mehdi*
Affiliation:
XLIM UMR CNRS n°6172, University of LIMOGES (France), 123 Avenue Albert Thomas, Limoges, France. Phone: + 33 5 55457243; Fax: + 33 5 55457666.
Sebastien Mons
Affiliation:
XLIM UMR CNRS n°6172, University of LIMOGES (France), 123 Avenue Albert Thomas, Limoges, France. Phone: + 33 5 55457243; Fax: + 33 5 55457666.
Abderrazak Bennadji
Affiliation:
XLIM UMR CNRS n°6172, University of LIMOGES (France), 123 Avenue Albert Thomas, Limoges, France. Phone: + 33 5 55457243; Fax: + 33 5 55457666.
Edouard Ngoya
Affiliation:
XLIM UMR CNRS n°6172, University of LIMOGES (France), 123 Avenue Albert Thomas, Limoges, France. Phone: + 33 5 55457243; Fax: + 33 5 55457666.
Raymond Quere
Affiliation:
XLIM UMR CNRS n°6172, University of LIMOGES (France), 123 Avenue Albert Thomas, Limoges, France. Phone: + 33 5 55457243; Fax: + 33 5 55457666.
*
Corresponding author: H. Mehdi Email: hassan.mehdi@xlim.fr
Get access Rights & Permissions [Opens in a new window]

Abstract

This paper focuses on the behavioral modeling of the passive RF blocks from frequency-domain samples. This work is based on vector fitting (VF) approach which is a robust method for MIMO system identification in the frequency domain. This paper addresses firstly the problem of convergence using envelope transient (ET) on complex circuits, i.e. power amplifiers (PAs), where linear sub-circuits are widely described through S-parameters matrices derived from ElectroMagnetic (EM) simulations. An alternative way leads to combine VF method with an RLC synthesis process at the circuit level. This approach is validated on a simple circuit case and generalized to MIMO systems. Second application is the behavioral modeling of MIMO blocks at system level in a high-level spice-like system simulation tool which allows “Control Flow” simulations. The proposed approach combines on one hand the VF method with and impulse responses evaluation on the other hand. In consequence, bilateral behavioral models of MIMO system can be efficiently achieved irrespective of the number of access. This method is validated at once on simple and complex MIMO blocks. As a result, the topological behavioral modeling of complex PAs, which distinguish linear sub-circuits and nonlinear ones, is now possible in a high-level time-domain CAD tool.

Keywords

Behavioral modelingVector fittingScilab/ScicosEnvelop transientMIMO system
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 3 , Issue 6 , December 2011 , pp. 657 - 665
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1]Rizzoli, V.; Neri, A.; Mastri, F.; Lipparini, A.: A Krylov-subspace technique for the simulation of integrated RF/microwave subsystems driven by digitally modulated carriers. Int. J. RF Microw. Comput. Aided Eng., 9 (6) (1999), 490–505.3.0.CO;2-D>CrossRefGoogle Scholar
[2]Soury, A.; Ngoya, E.; Nebus, J.M.: A new behavioural model taking into account nonlinear memory effects and transient behaviours in wideband SSPAs, in IEEE MTT-S Int. Microwave Symp. Digest, June 2002, 853–856.Google Scholar
[3]Mazeau, J.; Sommet, R.; Caban-Chastas, D.; Gatard, E.; Quéré, R.; Mancuso, Y.: Behavioral thermal modeling for microwave power amplifier design. IEEE Trans. Microw. Theory Tech., 55 (11) (2007), 2290–2297.Google Scholar
[4]Estagerie, F.X.; Bennadji, A.; Reveyrand, T.; Mons, S.; Quéré, R.; Constancias, L.: Behavioral modelling of power amplifier for radar applications. EuMA, 4 (2008), 146–154.Google Scholar
[5]Najafi, M.; Nikoukhah, R.: Modeling and simulation of differential equations in scicos, in 5th Int. Modelica Conf., Vienna, Austria, 2006.Google Scholar
[6]Gustavsen, G.; Semlyen, A.: Rational approximation of frequency domain responses by vector fitting. IEEE Trans. Power Deliv., 14 (3) (1999), 1052–1061.Google Scholar
[7]The Scicos website [Online]. www.scicos.org.Google Scholar
[8]The Modelica website [Online]. www.modelica.org.Google Scholar
[9]Mehdi, H.; Bennadji, A.; Mons, S.; Ngoya, E.; Quere, R.: Bilateral S parameters model for time domain system simulation, in IEEE Conf., INMMIC, 2010, Goteborg, Sweden.Google Scholar
[10]Gustavsen, G.: Computer code for Rational approximation of frequency dependent admittance matrices. IEEE Trans. Power Deliv., 17 (4) (2002), 1093–1098.CrossRefGoogle Scholar