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Feasibility of Additively Manufactured Tunable Liquid Crystal Loaded Dielectric Waveguides

Tesmer, Henning ; Gold, Gerald ; Bachbauer, Felix ; Polat, Ersin ; Sippel, Mark ; Jakoby, Rolf ; Vossiek, Martin ; Maune, Holger (2021):
Feasibility of Additively Manufactured Tunable Liquid Crystal Loaded Dielectric Waveguides.
In: IEEE Microwave and Wireless Components Letters, 31 (8), pp. 973-976. IEEE, ISSN 1531-1309, e-ISSN 1558-1764,
DOI: 10.1109/LMWC.2021.3082700,
[Article]

Abstract

This letter investigates the feasibility of the combination of additive manufacturing and liquid crystal (LC) loaded dielectric waveguides (DWGs) at W -band (75–110 GHz). The waveguide is extruded such that it has a cavity in its center, used for LC hosting. Reproducible cross sections are achieved along the DWG and high agreement between differential phase shift and figure-of-merit (FoM) is obtained when the DWG is biased electrically or magnetically. Deembedding the structure shows attenuation constants between 0.12 and 0.33 dB/cm which lead to a high FoM in the range of 100°/dB to 160°/dB. According to simulations, higher values are obtainable if larger LC cavities are realized.

Item Type: Article
Erschienen: 2021
Creators: Tesmer, Henning ; Gold, Gerald ; Bachbauer, Felix ; Polat, Ersin ; Sippel, Mark ; Jakoby, Rolf ; Vossiek, Martin ; Maune, Holger
Title: Feasibility of Additively Manufactured Tunable Liquid Crystal Loaded Dielectric Waveguides
Language: English
Abstract:

This letter investigates the feasibility of the combination of additive manufacturing and liquid crystal (LC) loaded dielectric waveguides (DWGs) at W -band (75–110 GHz). The waveguide is extruded such that it has a cavity in its center, used for LC hosting. Reproducible cross sections are achieved along the DWG and high agreement between differential phase shift and figure-of-merit (FoM) is obtained when the DWG is biased electrically or magnetically. Deembedding the structure shows attenuation constants between 0.12 and 0.33 dB/cm which lead to a high FoM in the range of 100°/dB to 160°/dB. According to simulations, higher values are obtainable if larger LC cavities are realized.

Journal or Publication Title: IEEE Microwave and Wireless Components Letters
Journal volume: 31
Number: 8
Publisher: IEEE
Uncontrolled Keywords: Electrodes;Attenuation;Wireless communication;Microwave photonics;Three-dimensional printing;Permittivity;Microwave communication;Additive manufacturing;dielectric waveguide (DWG);liquid crystal (LC);millimeter-wave (mmW) components;phase shifter;reconfigurable devices
Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics > Microwave Engineering
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics
Date Deposited: 01 Nov 2021 10:54
DOI: 10.1109/LMWC.2021.3082700
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