A Survey on Polarization Reconfigurable Patch Antennas

Polarization reconfigurability in a microstrip patch antenna system is one of the desired characteristics that have been the focus of research in recent years. Reconfigurable antenna with ability to radiate in more than one polarization state offers several degrees of freedom to antenna designer. The researches on polarization reconfigurable antennas are categorized into simple and complex feed structures. In this paper, several polarization reconfigurable antenna designs with and without loading which have been reported in the literature are discussed.