Intelligent-Controllable Antenna Structure Based on AFSS

In this paper, an intelligent controllable antenna structure based on Active Frequency Selective Surface (AFSS) is proposed by controlling PIN diodes on an off. The AFSS layer is loaded with eight pin diodes. When diodes are turned off, the FSS in the operating bandwidth shows the performance of broadband wave transmission, and the antenna radiates normally. When diodes are turned on, the AFSS becomes a metal reflector reflecting at the working bandwidth. The proposed structure can be used to realize the intelligent control of antenna radiation and improve its stealth performance.