A compact model of the ZARC for circuit simulators in the frequency and time domains
Metadatos
Mostrar el registro completo del ítemAutor
López Villanueva, Juan Antonio; Rodríguez Iturriaga, Pablo; Parrilla Roure, Luis; Rodríguez Bolívar, SalvadorEditorial
Elsevier
Materia
Fractional-order circuits ZARC Equivalent-circuit model SPICE
Fecha
2022-06-22Referencia bibliográfica
Juan A. López-Villanueva... [et al.]. A compact model of the ZARC for circuit simulators in the frequency and time domains, AEU - International Journal of Electronics and Communications, Volume 153, 2022, 154293, ISSN 1434-8411, [https://doi.org/10.1016/j.aeue.2022.154293]
Patrocinador
Universidad de Granada/CBUAResumen
Equivalent-circuit models containing fractional-order elements are often employed to make use of fractionalorder
calculus in the frequency and time domains in a variety of applications. Many of these circuits contain
constant-phase elements that appear in parallel with a resistor in a configuration called ZARC. But to avoid
fractional order derivatives and include it in circuit simulators, the ZARC itself can also be replaced by
equivalent circuit models that only contain integer order elements, such as resistors and capacitors. In this
article, a novel compact model is presented to substitute the ZARC by a multiple-RC network. This model is
valid for a continuous value of the order exponent and is applicable over a very wide range of frequencies,
making it useful in both the frequency and time domains. Since it uses only basic functions and operators, it
has been easily implemented as a subcircuit in circuit simulators. The validity of the model has been verified
and it has been compared with some previously proposed passive circuit models. The model has also been
discussed in relation to the initialization problem, which is an often overlooked challenge in fractional-order
circuits.