15.1. Directivity, Power Gain, and Effective Aperture15.2. Near and Far Fields15.3. General Arrays15.4. Linear Arrays15.4.1. Array Tapering15.4.2. Computation of the Radiation Pattern via the DFTMATLAB Function “linear_array.m”15.5. Planar Arrays15.5.1. Rectangular Grid Arrays15.5.2. Circular Grid ArraysMATLAB program “circular_array.m”15.5.3. Concentric Grid Circular Arrays15.5.4. Rectangular Grid with Circular Boundary Arrays15.5.5. Hexagonal Grid ArraysMATLAB Function “rect_array.m”MATLAB Function “circ_array.m”15.6. Array Scan Loss15.7. Multiple Input Multiple Output (MIMO) - Linear ArrayAppendix 15-A: Chapter 15 MATLAB Code ListingsMATLAB Program “Fig15_5.m” ListingMATLAB Program “Fig15_7.m” ListingMATLAB Function “linear_array.m” ListingMATLAB Program “circular_array.m” ListingMATLAB Function “rect_array.m” ListingMATLAB Function “circ_array.m” ListingMATLAB Function “rect_to_circ.m” ListingMATLAB Program “Fig15_51.m” ListingFigure 15.1Figure 15.2Figure 15.3Figure 15.4Figure 15.5aFigure 15.5bFigure 15.6Figure 15.7Figure 15.8Figure 15.9Figure 15.10Figure 15.11Figure 15.12Figure 15.13Figure 15.14Figure 15.15Figure 15.16Figure 15.17Figure 15.18Figure 15.19Figure 15.20Figure 15.21Figure 15.22Figure 15.23Figure 15.24Figure 15.25Figure 15.26Figure 15.27Figure 15.28Figure 15.29Figure 15.30Figure 15.31Figure 15.32Figure 15.33Figure 15.34Figure 15.35Figure 15.36Figure 15.37aFigure 15.37bFigure 15.38aFigure 15.38bFigure 15.39aFigure 15.39bFigure 15.40aFigure 15.40bFigure 15.41aFigure 15.41bFigure 15.42aFigure 15.42bFigure 15.43aFigure 15.43bFigure 15.44aFigure 15.44bFigure 15.45aFigure 15.45bFigure 15.46aFigure 15.46bFigure 15.47aFigure 15.467bFigure 15.48aFigure 15.48bFigure 15.49aFigure 15.49bFigure 15.50Figure 15.51Figure 15.52Table 15.1Table 15.2