In this work, the diagonal elements of the permittivity matrix for dielectric samples, 3D printed with a carbon fiber-loaded material (XT-CF20), are measured for frequencies within the range of 1 MHz to 18 GHz. These permittivity measurements demonstrated a strong anisotropy, indicating that the electromagnetic properties of the CF20 material depend on the infill method used to print. The importance of understanding the anisotropy for microwave device design is demonstrated via a dielectric-loaded cavity resonator application.
A. Harmon et al., "High Permittivity Anisotropic 3d Printed Material," 2022 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2022, pp. 1 - 6, Institute of Electrical and Electronics Engineers, Jan 2022.
The definitive version is available at https://doi.org/10.1109/EMCSI39492.2022.9889552
Electrical and Computer Engineering
Keywords and Phrases
3D Printing; Anisotropic Materials; Dielectric Materials; Spatial Permittivity Components
International Standard Book Number (ISBN)
Article - Conference proceedings
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01 Jan 2022