Design of a Polygon AMC Reflector for Dual-band Dual-polarized 5G Antenna

A novel polygonal artificial magnetic conductor (AMC) reflector for dual-band dual-polarized 5G base station antenna is proposed. The antenna consists of a pair of square symmetric dipole patches and an AMC reflector. The dipoles are placed in a cross pattern to achieve ±45 polarization. Two perpendicularity slotted dipoles are used to realize the dual-band characteristic. By using the proposed AMC reflector, antenna height can be reduced from 0.25λ
0
to 0.058λ
0
without degrading its performance (λ
0
represents the free space wavelength at 3.45 GHz).Simulation results indicate that the operating frequency range with S11 better than ‒10 dB is 3.41-3.61 GHz and 4.63-4.91 GHz, with isolation better than 31 dB, and a maximum gain about 7.5 dBi.