Antenna reconfiguration using metasurfaces

The paper describes the designs of a frequency-reconfigurable, polarization reconfigurable and pattern reconfigurable antennas using metasurfaces (MS). The frequency-reconfigurable and polarization reconfigurable antennas are composed of a simple circular patch antenna or slot antenna as the source antenna and a circular MS with the same diameter, with both source antenna and MS implemented using planar technology. The pattern reconfigurable antenna is composed of a circular patch antenna as the source antenna and a semicircular MS with the same diameter. In all these reconfigurable antennas, the MS is placed directly atop of the source antenna, making the antenna very compact and low profile with a thickness of only 0.05λ0. By rotating the MS around the center with respect to the source antenna, the frequency, polarization or pattern of the reconfigurable antenna can be reconfigured.published_or_final_versionThe 2014 Progress In Electromagnetics Research Symposium (PIERS 2014), Guangzhou, China, 25-28 August 2014. In PIERS Proceedings, 2014, p. 2400-240