Abstract
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.
Highlights
Since 2019, the fifth generation mobile communication (5G) has entered the stage of rapid development as commercial licences are formally issued to the telecommunication operators in many countries [1]
We roughly presented a simulated wideband dual-polarized antenna element with wide beamwidths in [19]
A dualband dual-polarized antenna element with dual wide beamwidths has been successfully studied in this paper
Summary
Since 2019, the fifth generation mobile communication (5G) has entered the stage of rapid development as commercial licences are formally issued to the telecommunication operators in many countries [1]. We roughly presented a simulated wideband dual-polarized antenna element with wide beamwidths in [19] It still suffers from low gain, unstable beamwidth in both radiation planes and slightly larger size due to the design flaw of the fence. The measured results are analogous to the simulated ones, and they show dual wide beamwidths in E- and H-planes, low cross polarization and acceptable FBR. The corresponding measured ones are from 3.11 GHz to 3.62 GHz, and from 4.62 GHz to 5.05 GHz, respectively, with gain of 11.04±0.33 dBi. That is to say, the simulated overlapped impedance bandwidths for the two input ports of the dual LP antenna array are 13.3% (3.17-3.62 GHz). The measured results agree well with the simulated ones, and they show wide beamwidth along y-axis, low cross polarization and acceptable FBR
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