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Technologies
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MOCAST 2020
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MOCAST 2020

A special issue of Technologies (ISSN 2227-7080).

Deadline for manuscript submissions: closed (31 March 2021) | Viewed by 7015

Special Issue Editors

Prof. Dr. Spyridon Nikolaidis

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Guest Editor
Physics Department, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece
Interests: analysis and design of digital circuits and systems; power consumption modeling; timing analytical models for digital circuits; leakage detection and localization in metallic pipelines
Special Issues, Collections and Topics in MDPI journals
Dr. Christos Volos

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Guest Editor
Laboratory of Nonlinear Systems, Circuits & Coplexity (LaNSCom), Department of Physics, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
Interests: electrical and electronics engineering; mathematical modeling; control theory; engineering, applied and computational mathematics; numerical analysis; mathematical analysis; numerical modeling; modeling and simulation; robotics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The 9th International Conference on Modern Circuit and System Technologies on Electronics and Communications (MOCAST 2020) will take place in Bremen, Germany from 7 to 9 September, 2020. The MOCAST technical program includes all aspects of circuit and system technologies from modeling, design, verification, implementation, and application. This Special Issue aims at publishing extended versions of top-ranked papers in the conference. The topics of MOCAST include:

  • Analog/RF and mixed signal circuits;
  • Digital circuits and systems design;
  • Nonlinear circuits and systems;
  • Device and circuit modeling;
  • Systems and applications;
  • Communication systems;
  • Network systems;
  • Power management;
  • Imagers, MEMS, medical, and displays;
  • Radiation front ends (nuclear and space application);
  • Education in circuits, systems, and communications.

Prof. Dr. Spiros Nikolaidis
Associate Prof. Dr. Christos Volos
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. Technologies 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 1600 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.

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Published Papers (3 papers)

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Research

10 pages, 1593 KiB  
Article
Comparison of System-Level Design Approaches on Different Types of Digitally-Controlled Ring-Oscillator
by Santthosh Selvaraj, Erkan Bayram and Renato Nega
Technologies 2021, 9(2), 38; https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9020038 - 19 May 2021
Viewed by 2126
Abstract
This paper presents a comparative study between two different implementations of digitally-controlled-oscillators (DCOs), whcih is the DAC-based and the digital controller-based DCO in TSMC 65 nm CMOS technology. This paper focuses on ring-oscillator architectures due to their high stability against PVT. The DAC-based [...] Read more.
This paper presents a comparative study between two different implementations of digitally-controlled-oscillators (DCOs), whcih is the DAC-based and the digital controller-based DCO in TSMC 65 nm CMOS technology. This paper focuses on ring-oscillator architectures due to their high stability against PVT. The DAC-based oscillator implements a differential architecture, and the digital controller-based architecture operates in a single-ended signal. The SFDR of the DAC-based DCO is 77.2 dBc and controller-based DCO is 56.8 dBc at 125 MHz offset. The Monte-Carlo simulation gives a deviation of 7.4% and 8.5% for the DAC-based and controller-based DCO, respectively. The phase noise performance of the DAC-based DCO and controller-based DCO is −78.9 dBc/Hz and −81.3 dBc/Hz at 1 MHz offset, respectively. The implementations are given and compared according to their performance based on post-layout simulation results. Full article
(This article belongs to the Special Issue MOCAST 2020)
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9 pages, 2142 KiB  
Communication
Multiobjective Ant Lion Approaches Applied to Electromagnetic Device Optimization
by Juliano Pierezan, Leandro dos S. Coelho, Viviana C. Mariani, Sotirios K. Goudos, Achilles D. Boursianis, Nikolaos V. Kantartzis, Christos. S. Antonopoulos and Spiridon Nikolaidis
Technologies 2021, 9(2), 35; https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9020035 - 11 May 2021
Cited by 8 | Viewed by 2018
Abstract
Nature-inspired metaheuristics of the swarm intelligence field are a powerful approach to solve electromagnetic optimization problems. Ant lion optimizer (ALO) is a nature-inspired stochastic metaheuristic that mimics the hunting behavior of ant lions using steps of random walk of ants, building traps, entrapment [...] Read more.
Nature-inspired metaheuristics of the swarm intelligence field are a powerful approach to solve electromagnetic optimization problems. Ant lion optimizer (ALO) is a nature-inspired stochastic metaheuristic that mimics the hunting behavior of ant lions using steps of random walk of ants, building traps, entrapment of ants in traps, catching preys, and re-building traps. To extend the classical single-objective ALO, this paper proposes four multiobjective ALO (MOALO) approaches using crowding distance, dominance concept for selecting the elite, and tournament selection mechanism with different schemes to select the leader. Numerical results from a multiobjective constrained brushless direct current (DC) motor design problem show that some MOALO approaches present promising performance in terms of Pareto-optimal solutions. Full article
(This article belongs to the Special Issue MOCAST 2020)
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16 pages, 39889 KiB  
Article
Circuit Implementation of a Modified Chaotic System with Hyperbolic Sine Nonlinearities Using Bi-Color LED
by Christos K. Volos, Lazaros Moysis, George D. Roumelas, Aggelos Giakoumis, Hector E. Nistazakis and George S. Tombras
Technologies 2021, 9(1), 15; https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9010015 - 24 Feb 2021
Cited by 3 | Viewed by 1909
Abstract
In this paper, a chaotic three dimansional dynamical system is proposed, that is a modification of the system in Volos et al. (2017). The new system has two hyperbolic sine nonlinear terms, as opposed to the original system that only included one, in [...] Read more.
In this paper, a chaotic three dimansional dynamical system is proposed, that is a modification of the system in Volos et al. (2017). The new system has two hyperbolic sine nonlinear terms, as opposed to the original system that only included one, in order to optimize system’s chaotic behavior, which is confirmed by the calculation of the maximal Lyapunov exponents and Kaplan-Yorke dimension. The system is experimentally realized, using Bi-color LEDs to emulate the hyperbolic sine functions. An extended dynamical analysis is then performed, by computing numerically the system’s bifurcation and continuation diagrams, Lyapunov exponents and phase portraits, and comparing the numerical simulations with the circuit simulations. A series of interesting phenomena are unmasked, like period doubling route to chaos, coexisting attractors and antimonotonicity, which are all verified from the circuit realization of the system. Hence, the circuit setup accurately emulates the chaotic dynamics of the proposed system. Full article
(This article belongs to the Special Issue MOCAST 2020)
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