Hehenberger, Simon Philipp und Caizzone, Stefano und Thurner, Stefan und Yarovoy, Alexander (2023) Broadband Effective Permittivity Simulation and Measurement Techniques for 3D-Printed Dielectric Crystals. IEEE Transactions on Microwave Theory and Techniques, Seiten 1-12. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/TMTT.2023.3259479. ISSN 0018-9480.
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Offizielle URL: https://ieeexplore.ieee.org/abstract/document/10089204
Kurzfassung
3D-printed structured dielectrics, or dielectric crystals, with engineered effective permittivity, are currently receiving much research attention to create novel graded index devices for micro- and mmWave applications. However, the design, modeling, and experimental verification of the dielectric properties of such crystals are not trivial. Promising results have been achieved using parametrically defined unit cells, effective media theories (EMT), and resonative measurement setups. However, more generalized design approaches and sophisticated simulation and measurement methods that provide insight into frequency-dependent behavior are needed to fully expoint the potential of structured dielectrics. This work discusses the plane wave expansion method (PWEM), Flochet port simulations, and traveling wave measurements in both guided and free-space setups to address the shortcomings of effective media theories like the Maxwell-Garnett approximation (MGA) and resonative measurement methods. Furthermore, a generalized design method for the dielectric crystals is utilized to create unit cells with different crystal symmetries. Results of the individual simulation and measurement setups are discussed concerning dielectric crystals in simple cubic (SC) and face-centered cubic (FCC) symmetry with different unit cell sizes and volumetric infill fractions. PWEM and Flochet port simulations and traveling wave measurements show excellent agreement for the extracted effective permittivity of structured dielectrics. Furthermore, the discussed methods predict and measure frequency-dependent effects that are not covered by effective media theories and resonative measurement setups, highlighting the necessity to adopt more sophisticated simulation tools for the design of graded index devices.
elib-URL des Eintrags: | https://elib.dlr.de/189717/ | ||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Titel: | Broadband Effective Permittivity Simulation and Measurement Techniques for 3D-Printed Dielectric Crystals | ||||||||||||||||||||
Autoren: |
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Datum: | 30 März 2023 | ||||||||||||||||||||
Erschienen in: | IEEE Transactions on Microwave Theory and Techniques | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||
DOI: | 10.1109/TMTT.2023.3259479 | ||||||||||||||||||||
Seitenbereich: | Seiten 1-12 | ||||||||||||||||||||
Verlag: | IEEE - Institute of Electrical and Electronics Engineers | ||||||||||||||||||||
Name der Reihe: | IEEE Transactions on Microwave Theory and Techniques | ||||||||||||||||||||
ISSN: | 0018-9480 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | 3D-Print; Dielectric crystal; Strucutred dielectric; effective permittivity; measurement; simulation; material characterization; | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||
HGF - Programmthema: | Kommunikation, Navigation, Quantentechnologien | ||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | R KNQ - Kommunikation, Navigation, Quantentechnologie | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Projekt Navigation 4.0 | ||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Kommunikation und Navigation > Navigation Institut für Hochfrequenztechnik und Radarsysteme > Aufklärung und Sicherheit | ||||||||||||||||||||
Hinterlegt von: | Hehenberger, Simon Philipp | ||||||||||||||||||||
Hinterlegt am: | 21 Apr 2023 15:26 | ||||||||||||||||||||
Letzte Änderung: | 04 Dez 2023 10:50 |
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