Quality Factor Minimization of Electrically Small Antennas by Density Topology Optimization

Jonas Tucek; Miloslav Capek; Lukas Jelinek; Ole Sigmund

doi:10.23919/EuCAP57121.2023.10133497

Quality Factor Minimization of Electrically Small Antennas by Density Topology Optimization

Jonas Tucek, Miloslav Capek, Lukas Jelinek, Ole Sigmund

Czech Technical University in Prague

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

Density-based deterministic topology optimization is formulated for method-of-moments numerical technique, and the corresponding stored energy operator is exploited to evaluate and optimize antenna Q-factor. The settings are briefly discussed, including material interpolation function, density filters, and projection filters. The proposed technique is used to improve fractional bandwidth, i.e., minimize the quality factor of a current density excited on a spherical shell. The results are compared with known fundamental bounds and with realized spherical helices.

Original language	English
Title of host publication	Proceedings of the 17th European Conference on Antennas and Propagation (eucap 2023)
Number of pages	5
Publisher	IEEE
Publication date	2023
DOIs	https://doi.org/10.23919/EuCAP57121.2023.10133497
Publication status	Published - 2023
Event	17^th European Conference on Antennas and Propagation - Florence, Italy Duration: 26 Mar 2023 → 31 Mar 2023

Conference

Conference	17^th European Conference on Antennas and Propagation
Country/Territory	Italy
City	Florence
Period	26/03/2023 → 31/03/2023

Keywords

Topology optimization
Antenna theory
Numerical optimization
Q-factor

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10.23919/EuCAP57121.2023.10133497

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title = "Quality Factor Minimization of Electrically Small Antennas by Density Topology Optimization",

abstract = "Density-based deterministic topology optimization is formulated for method-of-moments numerical technique, and the corresponding stored energy operator is exploited to evaluate and optimize antenna Q-factor. The settings are briefly discussed, including material interpolation function, density filters, and projection filters. The proposed technique is used to improve fractional bandwidth, i.e., minimize the quality factor of a current density excited on a spherical shell. The results are compared with known fundamental bounds and with realized spherical helices.",

keywords = "Topology optimization, Antenna theory, Numerical optimization, Q-factor",

author = "Jonas Tucek and Miloslav Capek and Lukas Jelinek and Ole Sigmund",

year = "2023",

doi = "10.23919/EuCAP57121.2023.10133497",

language = "English",

booktitle = "Proceedings of the 17th European Conference on Antennas and Propagation (eucap 2023)",

publisher = "IEEE",

address = "United States",

note = "17<sup>th</sup> European Conference on Antennas and Propagation , EuCAP 2023 ; Conference date: 26-03-2023 Through 31-03-2023",

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Tucek, J, Capek, M, Jelinek, L & Sigmund, O 2023, Quality Factor Minimization of Electrically Small Antennas by Density Topology Optimization. in Proceedings of the 17th European Conference on Antennas and Propagation (eucap 2023) . IEEE, 17^th European Conference on Antennas and Propagation , Florence, Italy, 26/03/2023. https://doi.org/10.23919/EuCAP57121.2023.10133497

TY - GEN

T1 - Quality Factor Minimization of Electrically Small Antennas by Density Topology Optimization

AU - Tucek, Jonas

AU - Capek, Miloslav

AU - Jelinek, Lukas

AU - Sigmund, Ole

PY - 2023

Y1 - 2023

N2 - Density-based deterministic topology optimization is formulated for method-of-moments numerical technique, and the corresponding stored energy operator is exploited to evaluate and optimize antenna Q-factor. The settings are briefly discussed, including material interpolation function, density filters, and projection filters. The proposed technique is used to improve fractional bandwidth, i.e., minimize the quality factor of a current density excited on a spherical shell. The results are compared with known fundamental bounds and with realized spherical helices.

AB - Density-based deterministic topology optimization is formulated for method-of-moments numerical technique, and the corresponding stored energy operator is exploited to evaluate and optimize antenna Q-factor. The settings are briefly discussed, including material interpolation function, density filters, and projection filters. The proposed technique is used to improve fractional bandwidth, i.e., minimize the quality factor of a current density excited on a spherical shell. The results are compared with known fundamental bounds and with realized spherical helices.

KW - Topology optimization

KW - Antenna theory

KW - Numerical optimization

KW - Q-factor

U2 - 10.23919/EuCAP57121.2023.10133497

DO - 10.23919/EuCAP57121.2023.10133497

M3 - Article in proceedings

BT - Proceedings of the 17th European Conference on Antennas and Propagation (eucap 2023)

PB - IEEE

T2 - 17<sup>th</sup> European Conference on Antennas and Propagation

Y2 - 26 March 2023 through 31 March 2023

ER -

Quality Factor Minimization of Electrically Small Antennas by Density Topology Optimization

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