a radio processing section for transmitting a signal for wireless power transfer to each of the plural terminal apparatuses via plural beams, by a beamforming for forming the plural beams against the plural terminal apparatuses simultaneously or at staggered times;

an information acquisition section for acquiring terminal information including location information of a current location of the terminal apparatus for each of the plural terminal apparatuses; and

a control section for controlling the beamforming so that the signal for wireless power transfer is received at a predetermined reception power in each of the plural terminal apparatuses, based on the terminal information of each of the plural terminal apparatuses, and

wherein the control section switches between a beamforming for long distance in which the plural beams are formed in a time-division manner and a beamforming for short distance in which the plural beams are simultaneously formed, based on a distance from the wireless-power transfer apparatus to each of the plural terminal apparatuses;

wherein the radio processing section comprises:

an array antenna in which plural antenna elements are disposed two-dimensionally or three-dimensionally, and

plural signal generation sections that are provided to correspond to the plural antenna elements and generate the signal for wireless power transfer, and

wherein the radio processing section changes a phase or both of a phase and an amplitude of the signal for wireless power transfer that is respectively supplied to the plural antenna elements, based on beam-forming control information from the control section.