Dielectric Resonator Antenna Loaded With Magnetoelectric Dipole for WiFi 6E Applications

This article introduces a novel cylindrical dielectric resonator antenna (DRA), which incorporates magnetoelectric (ME) dipoles as directors to achieve excellent impedance bandwidth (IBW) and stable gain. The directors consist of a pair of ME dipoles connecting a horizontal metal plate, where the improved matching characteristics and cross-polarization isolation (XPI) of the boat-shaped electric dipoles surpass those of traditional rectangular designs, resulting in wide IBW and high gain performance of the antenna. The rectangular slot is fed with a microstrip line on the bottom of the substrate. Compared to traditional cylindrical dielectric resonator antennas, the proposed antenna doubles impedance bandwidth and gain, with the XPI enhancement of 5 dB. Furthermore, the measured impedance bandwidth of the designed antenna is 16.3% (6.08 - 7.16 GHz) with a realized gain of 8.235 ± 1.075 dBi. The proposed antenna is a candidate for WIFI 6E communications and also provides options for more high-performance DRAs.