Abstract
In this paper, a strip-type artificial magnetic conductor (AMC) is utilized as the substrate of the waveguide to construct a periodic filtering waveguide structure. Through simulation analysis, the influence pattern of the structural parameter variations of the strip-type AMC on its filtering stopband performance is identified. Based on this pattern, the research innovatively integrates switch diodes with low power consumption and fast reverse recovery characteristics to achieve the reconfigurability of filtering performance. Consequently, a highly integrated reconfigurable filtering waveguide structure within the \mathbf{8 - 1 2} \mathbf{~ G H z} frequency band is successfully designed. This design realizes the reconfigurability of four different center frequency within the X-band, exhibiting outstanding features such as small size and multifunctionality.