A Low-Profile Dual-Polarized Dielectric Resonator Antenna for 2G/3G/4G Base Station Applications With Gain Enhancement

A low-profile dual-polarized dielectric resonator antenna reshaping the electric field by slotting the surface of the dielectric resonator to improve gain for use in 2G/3G/4G base stations operating from 1.7 to 2.7 GHz is presented. By stacking two different dielectric layers to expand bandwidth and implementing slot cuts on the surface of DR to improve the high-frequency gain, the antenna with low profile of 0.09λ
0
can obtain an impedance bandwidth of about 50% and a peak gain of 10.2 dBi.