A study into the PIN diode-based active metasurface for beam steering applications

This paper presents a study on the PIN-diode modelling of an active-metasurfaced patch antenna at 2.45 GHz. The metasurface composed of closed-rings that coupled to a probe-fed patch antenna. Both the ideal and actual equivalent circuits with parasitic elements and two gap-lengths of closed rings are considered. Results indicate that the gap-lengths and parasitic elements affect the directivity and the beam directions.