Nowadays, there is a significant research interest in the area of fractional-order circuits. This originates from the fact that they find applications in biochemistry, medicine, electrical engineering, and many other fields. For example, the modeling of viscoelasticity as well as of biological cells and tissues has been performed through the utilization of fractional-order calculus. This special issue is focused on the theory, design, and applications of fractional-order circuits and systems, with the purpose of offering to the circuits and systems community the opportunity to explore recent advances in fractional-order circuits and systems theory and design as well as of their applications.
A total of 20 papers have been accepted in this special issue and are arranged to cover the following subjects: circuit theory of fractional-order circuits, fractional-order filter and oscillator design and applications, digital circuits and systems approximating fractional-order systems as well as fractional-order circuit applications in renewable energy.