Abstract: An electromagnetic wave shield box 50 accommodates a DUT 100 having an antenna 110 and a coupling antenna 80 that is spatially coupled to the antenna 110, and includes a coupling antenna holding module 70 that arranges a plurality of the coupling antennas 80 annually so that an antenna surface is directed to a center of a ring, and holds the coupling antennas 80. The coupling antenna holding module 70 holds each coupling antenna 80 in a posture in which the coupling antenna 80 is inclined at, for example, 32 degrees with respect to a horizontal surface so that the respective coupling antennas 80 are able to radiate radio waves toward the same radiation point in upper positions, and is rotated by about 5 degrees around a center axis C1 in a direction orthogonal to a circumferential direction of the ring of the coupling antenna 80.