Wide-Beam Millimeter-Wave Circularly Polarized Magneto-Electric Dipole Antenna

A wide-beam millimeter-wave circularly polarized (CP) magneto-electric dipole antenna is proposed in this paper. The antenna inherits the advantages of simple structure and low cross polarization from the magneto-electric dipole antenna, mainly consisting of the magneto-electric dipole, metallic via, and split ring. The half-power beamwidth of the antenna is greatly enhanced by adding metallic vias around the magneto-electric dipole formed by two L-shaped patches. The antenna has a wide half-power beamwidth and a wide 3-dB axial ratio (AR) beamwidth, which is suitable for applications requiring a wide angle range for communication scenarios.