Table 5 List of the horizontal distance between the center flat lens and the center antenna, main lobe direction, gain, directivity and aperture efficiency of lens.

From: Beam steering for single antenna element using different optical lens

The horizontal distance between the center lens and the center antenna (nm)

Main lobe direction (°)

Gain (dBi)

Directivity (dBi)

Aperture efficiency of lens (%)

0

0

18.1

18.5

91.14

− 900

− 13

17.7

18

92.75

900

13

17.7

18

92.85

− 1900

− 29

16.4

16.7

91.65

1900

29

16.4

16.7

91.67