Polarization friendly retrodirective antenna array

Abstract

A polarization friendly rectrodirective array (RDA) is presented. The proposed RDA can receive any polarization and always retransmit the signal back to the interrogator with the predictable (orthogonal) polarization. This added feature can mitigate polarization mismatch loss and provide a more secure communication link. The proposed polarization friendly RDA shows excellent retrodirectivity for various received polarization states.