Depolarizing trihedral corner reflectors

An alternative method for altering the polarization response of a trihedral corner reflector which overcomes many of the limitations of previous work is shown. Conducting fins or corrugations of appropriate dimensions are added to one of the interor surfaces of the reflector such that the axis of the polarizer is oriented parallel to one of the principal axes of the trihedral. This orientation ensures that all rays incident from a given direction will experience the same polarization transformation upon reflection from the corrugations regardless of the sequence in which each ray is reflected by the three interior surfaces of the reflector. Prototype twist polarizing and circularly polarizing reflectors were constructed, and their response was measured. The results show that the prototype reflector responds essentially as expected.<>