A Wide-Beamwidth Magneto-Electric Dipole Antenna with Low Cross-Polarization and High Front-to-Back Ratio

Abstract

A novel magneto-electric (ME) dipole antenna is presented in this paper, which owns the characteristics of low cross polarization level and high front-to-back ratio (FBR) for the 5th-generation (5G) indoor communications is described. By dividing the conventional patches into two pairs of rectangle patches and four pieces of parasitic patches, the current which produces cross-polarization can be offset. Furthermore, the vertical fence can effectively widen the beamwidth of antenna. Experiment results demonstrate that a broad frequency bandwidth of 3.3-4.2 GHz (24%) can be achieved for 5G communications. Besides, a cross - polarization level below -20 dB and a FBR level of approximately 26 dB in the operating bands. Noting that a wide beamwidth of 100° for E-plane and H-plane is also obtained.