Publication detail

MATLAB-based Multi-objective Optimization of Broadband Circularly Polarized Antennas

WARMOWSKA, D. MAREK, M. RAIDA, Z.

Original Title

MATLAB-based Multi-objective Optimization of Broadband Circularly Polarized Antennas

English Title

MATLAB-based Multi-objective Optimization of Broadband Circularly Polarized Antennas

Type

conference paper

Language

en

Original Abstract

Since requirements on axial ratio and impedance matching of a circularly polarized antenna are conflicting objectives, a MATLAB-based multi-objective optimization was used to design the feeding system of a two-layer broadband antenna array. Whereas optimum values of state variables were computed by the Non-Dominated Sorting Genetic Algorithm in MATLAB, objective functions were evaluated in CST Microwave Studio using the time-domain solver. Optimizing the antenna array in frequency range from 19 GHz to 21 GHz, the axial-ratio bandwidth 1.44 GHz, and the gain 14.9 dB were achieved. The problem of design sensitivity on fabrication tolerances has not been satisfactorily solved yet.

English abstract

Since requirements on axial ratio and impedance matching of a circularly polarized antenna are conflicting objectives, a MATLAB-based multi-objective optimization was used to design the feeding system of a two-layer broadband antenna array. Whereas optimum values of state variables were computed by the Non-Dominated Sorting Genetic Algorithm in MATLAB, objective functions were evaluated in CST Microwave Studio using the time-domain solver. Optimizing the antenna array in frequency range from 19 GHz to 21 GHz, the axial-ratio bandwidth 1.44 GHz, and the gain 14.9 dB were achieved. The problem of design sensitivity on fabrication tolerances has not been satisfactorily solved yet.

Keywords

Circularly polarized antenna, sequential rotation technique, multi-objective optimization, non-dominated sorting genetic algorithm II.

Released

31.10.2017

ISBN

978-1-78561-699-0

Book

Proceedings of LAPC 2017

Pages from

1

Pages to

5

Pages count

5

URL

BibTex


@inproceedings{BUT138133,
  author="Dominika {Warmowska} and Martin {Marek} and Zbyněk {Raida}",
  title="MATLAB-based Multi-objective Optimization of Broadband Circularly Polarized Antennas",
  annote="Since requirements on axial ratio and impedance matching of a circularly polarized antenna are conflicting objectives, a MATLAB-based multi-objective optimization was used to design the feeding system of a two-layer broadband antenna array. Whereas optimum values of state variables were computed by the Non-Dominated Sorting Genetic Algorithm in MATLAB, objective functions were evaluated in CST Microwave Studio using the time-domain solver. Optimizing the antenna array in frequency range from 19 GHz to 21 GHz, the axial-ratio bandwidth 1.44 GHz, and the gain 14.9 dB were achieved. The problem of design sensitivity on fabrication tolerances has not been satisfactorily solved yet.",
  booktitle="Proceedings of LAPC 2017",
  chapter="138133",
  doi="10.1049/cp.2017.0263",
  howpublished="electronic, physical medium",
  year="2017",
  month="october",
  pages="1--5",
  type="conference paper"
}