Fig. 1. Evolution of antenna

Fig. 2. Effect of antenna evolution on axial ratio bandwidth (AR BW)

Fig. 3. Antenna element

Fig. 4. Electric field distribution of the upper patch at 28 GHz

Fig. 5. Electric field distribution of the lower patch at 38 GHz

Fig. 6. Structure of the antenna integrated frame

Fig. 7. Picture of antenna processing sample

Fig. 8. Picture of antenna test scenario

Fig. 9. Simulated and measured VSWR

Fig. 10. Simulated and measured AR BW

Fig. 11. The simulated and measured gain at 28 GHz

Fig. 12. Simulated and measured gain at 38 GHz

Fig. 13. Simulated and measured cross polarization at 28 GHz

Fig. 14. Simulated and measured cross polarization at 38 GHz