3D-Printed Dual-Polarized Magneto-Electric Dipole Antenna with Wideband High Isolation for Full-Duplex Applications

TL;DR

This paper presents a 3D-printed dual-polarized magneto-electric dipole antenna with wideband operation and high port isolation, suitable for full-duplex wireless systems.

Contribution

It introduces a novel 3D-printed MED antenna with orthogonal probes, achieving broad resonance and high isolation, advancing manufacturing and performance in full-duplex applications.

Findings

Resonance bandwidth from 3 GHz to 4 GHz

Cross-polarization isolation > 50 dB

Effective performance despite probe misalignments

Abstract

The paper introduces a novel dual-port dual-polarized magneto-electric dipole (MED) antenna with orthogonal Gamma and inverted-Gamma shape probes, which was fabricated by means of an additive 3D metal printing process. Electromagnetic wave simulation and RF measurement report a resonance bandwidth from 3 GHz to 4 GHz at both MED's ports with respect to a standing wave ratio of less than 2. The cross-polarization isolation (XPI) between the MED's ports was also measured to be greater than 50 dB across its entire resonance bandwidth. The paper also thoroughly examines the impact of misalignments in the polarization of the MED probes on the XPI level. The broadband resonance and excellent isolation between the MED ports make it a strong candidate for a full-duplex wireless transceiver in network infrastructure.