A Planar Retrodirective Array using Dual-mode Dielectric Resonator Antennas

A planar retrodirective array was constructed by dual-mode dielectric resonator antennas. Each port of antennas was effectively connected by the periodic boundary condition. The pattern of the response wave was investigated by changing the apex and azimuth angle of the incident wave. As a result, the retrodirective operation was obtained for all angles of incidence.