Abstract
A dual-band dual-polarized low-profile antenna loaded with an artificial magnetic conductor (AMC) reflector is proposed for 5G base stations. The proposed antenna consists of a pair of crossed dual-band rectangular dipoles and an AMC reflector, which operates as the perfect magnetic conductor (PMC) in the lower band and the perfect electric conductor (PEC) in the upper band. By using the AMC reflector instead of the conventional PEC reflector, the distance between the dipole radiator and the reflector can be reduced from 0.25λ 0 to 0.14λ 0 (where λ 0 is the free-space wavelength at 3.45 GHz) without performance degradation. Simulated results show that the proposed antenna has an impedance bandwidth of 3.2–3.7 GHz and 4.8–5.0 GHz, covering the sub-6 GHz spectra for 5G mobile communications in China. The simulated antenna peak gains are 8.1 dBi in the lower band and 6.2 dBi in the upper band. The port isolation of the proposed antenna is better than 20 dB within the 5G operating band.
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