A Magneto-Electric Dipole Antenna Array for Millimeter Wave Applications

Abstract

In this paper, a low-profile broadband antenna is proposed for future 5G millimeter-wave cellular wireless networks. The proposed antenna is a modified Magneto-Electric (ME) dipole, which consists of four metallic plates, grounded vias, an aperture fed, a ground plane, and a microstrip line feed. The antennas are built on RT/Duroid 5880 substrates and have been realized by the printed circuit board technique. A single-element with an overall of 10×10×1.04mm³ (~1.26λ_o×1.26λ_o×0.13λ_o at 38GHz) exhibits an impedance matching of 27.9% (32.2-42.8GHz) for |S₁₁|<–10dB and a realized gain up to 7.5dBi over the frequency band. The usefulness of these antennas as beamforming radiators is demonstrated by a 1×4 element linear array. Also, a wide-band excitation is applied for the linear ME dipole array to realize a broadband array. The simulated results proved the proposed array can operate in a frequency band spreading from 31.4GHz to 42.1GHz with a gain of 12.5dBi and a side-lobe of -13dB