Fig. 1. Antenna cell model

Fig. 2. Antenna cell size and structure: (a) cell side view; (b) cell patch top view; (c) feed network top view

Fig. 3. 1×8 antenna subarray model

Fig. 4. 8×8 antenna array model

Fig. 5. Human body model: (a) front view; (b) side view; (c) top view; (d) three-layer spherical model

Fig. 6. Antenna cell S-parameter (color online)

Fig. 7. Normalized 2D radiation pattern in the horizontal and vertical planes (Unit dB) (color online)

Fig. 8. Antenna cell cross-polarization ratio parameter (color online)

Fig. 9. 1×8 antenna subarray S-parameter (Unit dB) (color online)

Fig. 10. 1×8 antenna subarray radiation pattern (Unit dB) (color online)

Fig. 11. 4×8 antenna array S-parameter: (a) return loss; (b) inter-subarray cross-polarization isolation parameter; (c) inter-subarray co-polarization isolation parameter; (d) inter-subarray cross-polarization isolation parameter (color online)

Fig. 12. 8×8 antenna subarray radiation pattern (Unit dB) (color online)

Fig. 13. 8×8 antenna subarray cross-polarization ratio parameter curve (Unit dB) (color online)

Fig. 14. 8×8 antenna array scanning angle range curves (color online)

Fig. 15. Radiation distribution of the human body at a horizontal spacing of 6 m: SAR (left) and electric field strength (right) (color online)

Fig. 16. Radiation distribution of the human body at a horizontal spacing of 15 m: SAR (left) and electric field strength (right)(color online)

Fig. 17. Radiation distribution of the human body at a horizontal spacing of 7 m: SAR (left) and electric field strength (right) (color online)

Fig. 18. Radiation distribution of the human body at a horizontal spacing of 11 m: SAR (left) and electric field strength (right) (color online)