creases the antenna's efficiency. Therefore, it is sometimes necessary to design CP antennas for some applications like for THz operation in future 6G networks. The authors of [16] create a half E- shaped antenna for Wi-Fi operation .4 GHz), which is circularly polarized. The proposed design in [16] consists of two layers, and it is probe-fed. As a result, designing CP antennas is occasionally necessary for particular applications. The authors of [16] create a half E-shaped antenna that resonates at 2.4 GHz. This antenna design is circularly polarized. Moreover, the proposed design in [16] is probe-fed and consists of two layers. The E-shaped antenna can be used as a starting shape to create the half E-shaped CP antenna. Figure 10.1 shows the shape evolution from the E-shaped LP antenna to the half E-shaped CP antenna. We can see from these diagrams that a shorting bar of width Wb is required for the half E-shaped CP antenna. Currents in the y direction are induced by this shorting bar. As a result, the antenna can operate in CP mode. The shorting bar position is one major feature that influences the axial ratio (AR) bandwidth. As a result, another unknown variable is the proper shorting bar position. 10 THz Antenna Design Using SSA for 6G E-shaped patch antenna E-shaped patch antenna Dominant Section Asymmetric Radiating slots to create Half E-shaped patch antenna Half E-shaped patch antenna (CP) Fig. 10.1 E-shaped antenna shape evolution for CP [16] 0.4 (mm) Fig. 10.2 Antenna geometry top view Figure 10.2 shows the geometry of a modified half E-shaped patch antenna. The antenna geometry is rather complex, as one can see. It is made up of 12 geometrical design parameters. As a result, estimating the effect of each design parameter in order to obtain the specified antenna performance will be extremely difficult, if not impossible. S.K. Goudos and M. A. Matin As a result, the apparent solution to this design difficulty is an optimization strategy. Additionally, because we need a circular polarized antenna, we need