A Building Block Assembly Dualband Dual-Polarized Antenna With Dual Wide Beamwidths for 5G Microcell Applications

A dualband dual-polarized antenna element with dual wide beamwidths for 5G microcell applications is initially proposed and investigated in this paper. To achieve very low manufacturing cost, an unprecedented method is applied to the antenna element, in which the antenna components are printed separately on F-4B substrates, follow by assembling them to form the antenna element (similar to building block assembly). To further achieve high gain, an 1 × 4 antenna array is also designed. Measured results show that the half power beamwidths (HPBWs) in H- and E-planes are 112±1° and 105±3° in the lower frequency band of 3.22-3.88 GHz, respectively, and 99±3° and 106±4° in the upper frequency band of 4.52-5.02 GHz, respectively. In addition, high front-to-back ratio (FBR) of approximately 19 dB and high isolation of 33.6 dB can also be achieved.