Abstract
This letter presents a dual-polarized dielectric resonator antenna (DRA) achieving more than 40% fractional bandwidth, thus the 5G bands n257 and n260 are covered with a single antenna. Hence, the system cost is considerably reduced, since only one antenna array system is required. The bandwidth could be reached thanks to the wideband monopoles and differential feeding enabling hybrid operation in monopole and DRA mode. The antenna uses a standard two metal layer printed-circuit-board (PCB) process and 3-D printing for the fabrication of the dielectric resonators, reducing the number of PCB layers and the overall production cost. The prototypes of a single element and 2 × 2 array show a maximal gain of 7.1 and 10.4 dBi, respectively.
Highlights
A S AN answer to the tremendous growth in data traffic, big parts of the 5G communication will be moved to the available frequency bands in millimeter wave range [1]
Dielectric resonator antennas can be excited in various ways including probes, microstrip line feed, and aperture coupling [10]
30 GHz, the radiation comes from monopoles in the feeding structure and the dielectric resonator works more as a director increasing the gain in the desired direction
Summary
A S AN answer to the tremendous growth in data traffic, big parts of the 5G communication will be moved to the available frequency bands in millimeter wave (mmW) range [1] This way, wide band channels can be reserved for growing numbers of mobile equipment users. At the same time fulfilling the bandwidth and price requirements with the conventional antennas becomes challenging Those antennas have to support dual polarization to further increase the communication data rate [2]. Higher bandwidths exceeding 20% can be achieved by using a parasitic patch antenna concept [7] This solution can be applied for dualband designs [8], [9].
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