A Novel Dual-Band 28/38 GHz AFSL MIMO Antenna for 5G Smartphone Applications
Hala M. Marzouk, Mohamed I. Ahmed, A. A. Shaalan
Abstract
Abstract This manuscript introduces the design and analysis of dual-band air-filled-slotted- loop MIMO antenna which operates at 28 and 38 GHz frequencies for coming fifth-generation 5G for mobile communications. The antenna designed using low-cost FR-4 substrate material that achieving good performance of means of gain and efficiency. The dual-band operation acquired by presenting an air-filled-slotted loop AFSL structures in the radiators. The antenna model contains radiating patch at the upper edge with three AFSLs for 28 GHz and radiating patch at the lower edge with three AFSLs for 38 GHz. The attained results demonstrate that the reflection coefficients for the upper and lower antennas below -10 dB in the frequency bands (27.7 - 28.7) GHz and (37.3 - 38.6) GHz with impedance bandwidths 3.5% for 28 GHz and 7% for 38 GHz which has the quality of covering the 5G band. The introduced antenna is designed and simulated by industry-standard CST 2017 MWS and HFSS programs with substrate size of 55 x 110 mm 2 with h = 1.6 mm and ε r =4.3.