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KADĚRA, P. LÁČÍK, J. ARTHABER, H.
Original Title
Effective Relative Permittivity Determination of 3D Printed Artificial Dielectric Substrates Based on a Cross Unit Cell
Type
journal article in Web of Science
Language
English
Original Abstract
This paper proposes closed-form analytical models for the determination of the effective relative permittivity of 3D printed artificial dielectric substrates based on a cross unit cell. The parallel plate capacitor approach is used to describe the real physical shape of the unit cell allowing to include anisotropic properties as well. A detailed comparison of the analytical models and effective medium approximations is carried out for air host material and inclusion materials with relative permittivities in the range from 2.5 to 1000 and the inclusion volume fraction from 0.1 to 1. It is observed that the proposed models predict the effective relative permittivity with much better accuracy than frequently used effective medium theory-based formulas and due to their closed-form expressions provide faster calculations than numerical methods. The proposed models were verified experimentally, achieving a very good agreement with simulations.
Keywords
Dielectric substrates, permittivity, analytical models, material characterization, three-dimensional printing
Authors
KADĚRA, P.; LÁČÍK, J.; ARTHABER, H.
Released
1. 12. 2021
Publisher
Brno University of Technology
Location
Brno, Czech Republic
ISBN
1210-2512
Periodical
Radioengineering
Year of study
30
Number
4
State
Czech Republic
Pages from
595
Pages to
610
Pages count
16
URL
https://dx.doi.org/10.13164/re.2021.0595
BibTex
@article{BUT172754, author="Petr {Kaděra} and Jaroslav {Láčík} and Holger {Arthaber}", title="Effective Relative Permittivity Determination of 3D Printed Artificial Dielectric Substrates Based on a Cross Unit Cell", journal="Radioengineering", year="2021", volume="30", number="4", pages="595--610", doi="10.13164/re.2021.0595", issn="1210-2512", url="https://dx.doi.org/10.13164/re.2021.0595" }