Fig. 1. Three filling schemes with different sub-aperture shapes. (a) Circle; (b) hexagon; (c) combination

Fig. 2. Relationship between transmission power ratio and truncation coefficient. (a) Hexagon; (b) cut sector

Fig. 3. Relationship between BPF and truncation coefficient for splicing schemes with different shapes

Fig. 4. Near-field and far-field patterns simulated based on three sub-aperture splicing schemes. (a) Near-field pattern for 7 circles; (b) near-field pattern for 7 hexagons; (c) near-field pattern for 7 combination; (d) 3D far-field pattern for 7 circles; (e) 3D far-field pattern for 7 hexagons; (f) 3D far-field pattern for 7 combination; (g) 2D far-field pattern for 7 circles; (h) 2D far-field pattern for 7 hexagons; (i) 2D far-field pattern for 7 combination

Fig. 5. Light intensity distribution along x-axis of far-field pattern center