To provide an array antenna having a low-side lobe property mainly required in SFN broadcast wave relay of digital broadcast, and having a wide band and a short depth size.

In the array antenna for reception in broadcast wave relay, a plurality of loop antennas are arranged into a matrix form, with respect to the distribution ratio of feeding the power for feeding power to each of the loop antennas, and the distribution ratios of the loop antenna elements positioned on both ends in an H-surface direction or an E-surface direction are set to be lower than the distribution ratios of the loop antennas positioned at the inside side thereof.