Provided is an antenna assembly capable of receiving/transmitting radio waves of two types of frequency bands without increasing the arranging space. The antenna assembly (10) comprises a first loop aerial component (141, 142) for receiving/transmitting the radio waves of the first frequency band and a second loop aerial component (143) for receiving/transmitting the radio waves of the second frequency band which is higher than the first frequency band, with the second loop aerial component (143) being configured inside the first loop aerial component (141, 142).