Antenna device and feed device

Abstract

An antenna device and a feed device that allows a beam direction to be adjusted with a simple calculation are provided. An antenna device includes an array antenna with multiple antenna elements that are arranged in two dimensions, multiple antenna elements being arranged along each of a first axis and a second axis. The antenna device includes at least one phase adjusting unit configured to adjust, with respect to a first axial direction, a phase of power supplied to each of the multiple antenna elements. The antenna device includes an image capturing unit configured to capture an image through a fisheye lens. The antenna device includes a position converting unit configured to convert a first position, which is used in the image capturing unit, of a marker included in the image captured by the image capturing unit, into a second position of polar coordinates on a first plane that includes the first axis and the second axis. The antenna device includes an elevation-angle acquiring unit configured to determine, within a second plane that includes the first axis and a third axis, an elevation angle of a projected position relative to the third axis, based on the second position, the projected position being obtained by projecting the first position onto the second plane. The antenna device includes a control unit configured to control the phase adjusting unit such that a direction of a beam radiated through the array antenna is derived from the elevation angle within the second plane.