A millimeter wave tire-shaped filter dielectric resonator antenna

In this paper, a tire-shaped filter dielectric resonator antenna based on microstrip-slot coupling feeding is proposed, which consists of a dielectric resonator, a metal ground plane, and a microstrip feeder. The tire-shaped dielectric resonator introduces two radiation nulls for the antenna, and the interaction of a pair of stubs loaded on the slot and the radiation patch at the end of the microstrip line improves the level of out-of-band rejection of the antenna. The impedance bandwidth obtained by HFSS software simulation is 19.7% (34.9-42.5GHz), and the maximum gain in the band is 6.6dBi. The antenna is pint-sized in volume, has good filtering characteristics, and covers the 5G extended bandwidth n260 band.