A Wideband Dual-Polarized Dielectric Magnetoelectric Dipole Antenna

A new wideband +/- 45 degrees dual-polarized metal loop dielectric resonator magnetoelectric antenna is proposed in this communication. The antenna consists of two orthogonal dicky:hie bars that support two orthogonal electric dipoles and two ems interlaced metal semi-loops that are equivalent to two orthogonal magnetic dipoles above the ground. With a legitimate combination of the electric and magnetic dipoles, a unidirectional radiation with low backward radiation and equal E-plane and H-plane radiation patterns can be achieved. The antenna can be made of a monolithic dielectric block with simple installation. To validate the new antenna configuration, a prototype is designed, manufactured. and measured. The prototype antenna using ceramic with the electrical size of 0.33 lambda(0) x 0.33 lambda(0) x 0.21 lambda(0) demonstrates that an impedance bandwidth of 11.4% (vertical bar S-11 vertical bar < -15 dB) in the 3.5 GHz frequency band can be achieved with the measured forward/backward ratio of better than 22 dB. The proposed antenna is suitable as antenna element for massive-MIMO array antennas, where a large number of antenna elements need to be installed in a compact space.