A switchable linear/circular polarized ferrite resonator antenna is investigated. It is shown that the polarization can be switched from linear to circular by applying a static magnetic bias to the ferrite resonator antenna. The return loss and radiation patterns for the two polarizations are presented.

Electronics Letters
Carleton University

Petosa, A., Mongia, R.K., Ittipiboon, A., & Wight, J. S. (1995). Switchable LP/CP ferrite disk resonator antenna. Electronics Letters, 31(3), 148–149. doi:10.1049/el:19950098