Dear Colleagues,

Fractional calculus is the branch of mathematics that generalizes the operations of classical calculus. The dynamics of real-world systems can be more effectively captured using the concepts of fractional calculus compared to classical calculus-based models. This is due to the additional degrees-of-freedom (extra ‘tuning knobs’) available in a fractional-order transfer function, which, in turn, enhances the design flexibility. The application of numerical approximation methods has resulted in effective fractional-order systems for various engineering disciplines, such as linear and non-linear circuit theory, signal processing, biomedicine, control theory, etc. In recent years, optimization (both classical and metaheuristic) techniques have also been exploited by researchers to obtain robust fractional-order models.

The focus of this Special Issue is to further advance the theory, design, realization, and application domain of fractional-order systems.

The first volume of this Special Issue was a great success with 15 papers published, which can be read at: Fractal Fract | Special Issue : Fractional-Order Circuits, Systems, and Signal Processing (mdpi.com)

Dr. Norbert Herencsar
Dr. Shibendu Mahata
Prof. Dr. Esteban Tlelo-Cuautle
Prof. Dr. Ivo Petráš
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fractal and Fractional is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• fractional-order analog filters, oscillators, PLLs
• fractional-order filters for digital signal and image processing
• fractional-order neural networks for signal processing
• modeling of fractance behavior using active/passive elements
• fabrication of fractance elements
• fractional-order modeling of batteries
• fractional-order control systems
• fractional-order bioimpedance modeling