Single- and Dual-Band FSS with Switchable Characteristics

In this work, we propose an FSS that electrically reconfigures its transmission spectrum. The FSS is formed by elements based on the four-arms star geometry, and it uses PIN diodes as active components. Three states of configuration of the FSS panel are analyzed. By biasing the entire panel with the voltage, either forward or reversed, the structure shows single-stopband response, while when half of the panel is forward biased and the other half is reserved biased, it shows dual-stopband response.