se. The distribution of radiated power, on the other hand, is deemed satisfactory since the gain remains near maximum inside wide spans of space, allowing the antenna to successfully transmit and receive signals from a wide range of directions. In the case of mobile communications, this performance is desired. The realized gains S.K. Goudos and M. A. Matin 3D Polar Plot 300GHz B10normalize(GainTotal) 30.00 Theta (deg) -2.50 30.00 -5.00 60.00 -7.50 240.00 -10.00 150.00 60.00 -12.50 90000 120.00 -15.00 -17.50 300.00 dB10normalize(GainTotal) -20.00 120.00 330.00 60.00 8-00 Phr (deg) 30.00 120.00 150.00 180.0 Fig. 10.5 Full ground case: 3D gain pattern of the best design found by SSA at 300 GHz (Jsurf) 7.1087E+001 6.8143E+001 6.5199E+001 6.2256E+001 5.9312E+001 5.6368E+001 5.3425E+001 5.0481E+001 4.7537E+001 4.4593E+001 4.1650E+001 3.8706E+001 3.5762E+001 2819E+001 2.9875E+001 2.6931E+001 0.5 (mm) Fig. 10.6 Partial ground case: Simulated surface current distribution of the best design at 300 GHz at 300 GHz are 3.48 and 6.84 dBi for the partial ground and the full ground case, respectively. Also, the radiation efficiency at 300 GHz is about 98 and 97% for the partial ground and the full ground case, respectively. 10 THz Antenna Design Using SSA for 6G B(Jsurf) 7.1313E+001 6.7746E+001 6.4179E+001 6.0612E+001 5.7045E+001 5.3478E+001 4.9911E+001 4.6344E+001 4.2777E+001 3.9210E+001 3.5644E+001 2077E+001 2.8510E+001 2. 2.4943E+001 2.1376E+001 1 7809E+001 0.5 (mm) Fig. 10.7 Partial ground case: Simulated surface current distribution of the best design at 300 GHz Curve Info B10normalize(GainTotal) Setup300GHz LastAdaptive Freq='300GHz Phi='Odeg -2.80 -5.60 -11.20 Fig. 10.8 Partial ground case: Radiation pattern of the best obtained design by SSA at 300 GHz. S.K. Goudos and M. A. Matin Curve Info B10normalize(GainTotal) Setup, 300GHz LastAdaptive Freq= 300GHz Phi='90deg -3.50 -7.00 -10.50 -14.00 Fig. 10.9 Partial ground case: Radiation pattern of the best obtained design by SSA at 300 GHz. = 90° The S11 frequency response of 