Vol. 116

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2021-10-12

Influence of 3D Printing Process Parameters on the Radiation Characteristics of Dense Dielectric Lens Antennas

By Fikret Tokan, Selami Demir, and Alper Çalışkan
Progress In Electromagnetics Research C, Vol. 116, 113-128, 2021
doi:10.2528/PIERC21080605

Abstract

In recent years, additive manufacturing has found increasing interest in fabrication of dielectric antennas. Using additive manufacturing brings significant advantages such as design flexibility, compactness, fast and low-cost manufacturing compared to traditional fabrication methods. Dielectric antennas having dense material allow high power transfer efficiency through the lens. However, a successful 3D printing process with dense dielectric materials is a great challenge. In this paper, impact of main process parameters during 3D printing; namely printing speed, process temperature and layer height on the resulted relative electrical permittivity values of a dense dielectric material is investigated. Test samples are printed with a dielectric material having εr = 10, and relative permittivity variations of these samples are measured with a vector network analyzer in X-band (8.2-12.4 GHz). In this way, optimum printing parameters are determined. Influence of dielectric constants of printed materials on the antenna radiation characteristics are inspected for an extended hemispherical lens antenna by a full-wave computer-aided design tool. Results demonstrate that an additively manufactured dense dielectric antenna will act as a traditionally manufactured dielectric antenna if and only if it is manufactured with optimum printing parameters.

Citation


Fikret Tokan, Selami Demir, and Alper Çalışkan, "Influence of 3D Printing Process Parameters on the Radiation Characteristics of Dense Dielectric Lens Antennas," Progress In Electromagnetics Research C, Vol. 116, 113-128, 2021.
doi:10.2528/PIERC21080605
http://jpier.org/PIERC/pier.php?paper=21080605

References