Could you help me polish the following sentencesThe simulation of the antenna model is implemented in commercial software CST Studio Suite The periodic boundary condition is set in x- and y- axis dire

The simulation of the antenna model was conducted using the CST Studio Suite commercial software. To establish the periodic boundary condition, the x- and y-axis directions were taken into account, while the scanning angle was set at 0° and 50° in the YOZ plane. The reflection coefficients of the two ports were plotted in Fig. 2(a) under different scanning angles. Specifically, the reflection coefficients of Port1 were consistently below -10 dB from 20 to 26 GHz at scanning angles of 0° and 50°. Conversely, the reflection coefficients of Port2 displayed greater variation than Port1 due to the beam scanning at H-plane for Port1 and E-plane for Port2. Furthermore, the coupling between the antenna units of H-plane was smaller than E-plane. Fig. 2(b) illustrates the S21 between the two ports, which is below -15 dB at the two scanning angles. Overall, these results indicate that the proposed antenna unit can achieve high isolation when the phased array scans at different angles