Antenna device, power supplying device, and power supplying method

Abstract

An antenna device includes: an array antenna having antenna elements; phase shifters to adjust a phase of a power transmission signal supplied to each antenna element in a first axis direction; a camera to obtain an image through a fisheye lens; a memory; and a processor to execute converting a first position of a marker in the image, into a second position in polar coordinates on a first plane including the first and second axes; obtaining, from the second position, an elevation angle of the first position projected onto a second plane including the first and third axes, with respect to the third axis; storing in the memory, sets of phase data corresponding to elevation angles, representing phases adjusted to be aligned upon power transmission to a power receiver, for controlling the phase shifters to make a beam radiated by the array antenna directed at the elevation angle.