A 3-D Printed Waveguide-Based Linearly Polarized Magnetoelectric Dipole Antenna

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)68-72
Journal / PublicationIEEE Antennas and Wireless Propagation Letters
Issue number1
Online published24 Nov 2020
Publication statusPublished - Jan 2021


This letter presents a waveguide-based linearly polarized magneto-electric (ME) dipole antenna. The magnetic and electric dipoles are realized by a waveguide aperture and a pair of rectangular patches, respectively. The antenna employs 3-D printing technique as the manufacturing method. Compared to the conventional ME dipole designs which operate in microwave band, the proposed antenna has a novel structure and exhibits simplified fabrication process. In order to realize the metallic walls of the waveguide structure, a two-step metal deposition technique (sputtering and electroplating) is used to coat the dielectric with copper. To validate the design idea, a prototype is designed and fabricated in X-band for demonstration. Through experiments, it is found that the proposed antenna can achieve a wide impedance bandwidth of 46.8% from 7.2 to 11.6 GHz and a stable gain of 5.4 ± 1.2 dBi. While, the antenna has stable patterns, low cross-polarization and backlobe radiation over the operating frequency band as well.

Research Area(s)

  • 3-D printing, Antennas, Copper, Dielectrics, differential feed, Dipole antennas, Gain, Magneto-electric dipole, Surface impedance, Surface waves, unidirectional pattern, wideband antenna