Abstract
Novel reconflgurable frequency selective surfaces (RFSS) are designed using a flnite-difierence time-domain with periodic boundary condition (FDTD/PBC) algorithm. The FSS are reconflgured using two techniques: the flrst technique providing a wide frequency tuning range is based on using diodes to change the current distribution over the FSS surface, and the second technique exhibiting a flner frequency tuning resolution is based on changing the grid orientation of the FSS mechanically. Simulation results are provided to validate the concept of RFSS. The results show that these designs provide a wide dynamic range of reconflgurability and a large degree of freedom in controlling the FSS frequency response.
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