3D Printed Capsule-shaped Dipole with Multi-Slot Antenna Based on Metallic Filament Material

摘要

This article presents the design of a 3D printed capsule-shaped dipole with a multi-slot antenna for ISM band centered at 2.45GHz. The mixed metallic composed of filament called "Electrifi" was used as a conductive layer and Polylactic acid (PLA) filament as a support layer on the bottom side. The main objective of this research is to demonstrate the ability to design and construct capsule-shaped dipole with multi-slot antennas using conductive filament materials directly from a 3D printer. The results of the simulation showed that the proposed antenna can cover the entire ISM bandwidth at a central frequency of 2.45GHz. However, the 2D radiation pattern of the antenna is almost omni-directional on the YZ plane (x-axis). The simulation results showed that the maximum gain was 2.44dB and covered bandwidth from 2.19GHz to 2.80GHz. Finally, the measurement results showed that the impedance bandwidth of -10 dB was 2.04GHz to 2.59GHz, and the maximum gain was 2.35dB, at the frequency center was 2.45GHz, which was agree with the simulation results.