Persons
Ing. Jonáš Tuček
All publications
Gradient-Based Topology Optimization in Method of Moments with Black & White Material Elements
- Authors: Ing. Jonáš Tuček, prof. Ing. Miloslav Čapek, Ph.D., doc. Ing. Lukáš Jelínek, Ph.D.,
- Publication: Proceedings of 16th European Conference on Antennas and Propagation. Piscataway, NJ: IEEE, 2022. ISBN 978-88-31299-04-6.
- Year: 2022
- Department: Department of Electromagnetic Field
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Annotation:
A topology optimization technique based on exact reanalysis is proposed within method-of-moments formalism. The optimization is formulated over a fixed discretization grid by performing general block structural modification. The procedure is based on an inversion-free evaluation of topological sensitivities, constituting a gradient-based local step that is iteratively restarted by the genetic algorithm. The proposed method sacrifices structural resolution at the expense of lower computational time and direct manufacturability. The method's validity and effectiveness are demonstrated in two examples.
Shape Regularization and Acceleration of Topology Optimization via Point Group Symmetries
- Authors: prof. Ing. Miloslav Čapek, Ph.D., Ing. Vojtěch Neuman, Ing. Jonáš Tuček, doc. Ing. Lukáš Jelínek, Ph.D.,
- Publication: Proceedings of 16th European Conference on Antennas and Propagation. Piscataway, NJ: IEEE, 2022. p. 1-4. ISBN 978-88-31299-04-6.
- Year: 2022
- DOI: 10.23919/EuCAP53622.2022.9769019
- Link: https://doi.org/10.23919/EuCAP53622.2022.9769019
- Department: Department of Electromagnetic Field
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Annotation:
The existent technique for shape optimization based on exact reanalysis of method-of-moments models is extended by symmetry operators. Their application is twofold: to prescribe a given symmetry and accelerate the optimization by reducing the number of unknowns, or to penalize unsymmetrical shapes, constraining thus the regularity and simplifying potential manufacturing.
Topology Optimization of Electrically Small Antennas With Shape Regularity Constraints
- Authors: prof. Ing. Miloslav Čapek, Ph.D., Ing. Vojtěch Neuman, Ing. Jonáš Tuček, doc. Ing. Lukáš Jelínek, Ph.D., Gustafsson, M.
- Publication: 15th European Conference on Antennas and Propagation. Berlin: IEEE, 2021. ISSN 2164-3342. ISBN 978-88-31299-02-2.
- Year: 2021
- Department: Department of Electromagnetic Field
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Annotation:
The existent framework for shape optimization of electrically small antennas is extended by a new set of geometrical operators. They are capable of operating over shapes directly, controlling their regularity, amount of used material, etc. The formulation is compatible with existent physical fitness functions and known fundamental bounds. A simple example of Q-factor minimization is presented.
