Reconfigurable Beamforming Array for Far Field Wireless Power Transfer Applications

The paper presents a high gain
$4\times 4$
reconfigurable beamforming array of patch antennas for far-field Wireless Power Transfer (WPT) at 2.4 GHz. A reconfigurable feed network implemented with alternative microstrip lines can steer the main beam in three predefined directions: 0, −20 and +20 degrees. To increase the gain of the array four
$4\times 1$
broadside linear arrays are used with gain 10.7dBi, 10.4dBi and 10.3dBi. The two dimensional array gain in 10.7 dBi with the highest sidelobe level to be 17. dB lower.