Array designs for active electrically small superconductive antennas

► Active electrically small antenna is proposed and evaluated experimentally. ► Arrays of parallel SQIFs and bi-SQUIDs are used in the antenna design. ► Transfer factor 750 μV/μT was achieved for antenna of 3.3 mm × 3.3 mm size. ► 70 dB linearity was obtained using two-tone analysis technique.