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Abstract
AbstractThis article presents a frequency selective absorber (FSR) with a selective passband and two wide absorption bands. The structure is composed of a resistive layer and a bandpass frequency selective surface (FSS) layer. The resistive layer is a combination of a metallic ring with loaded resistors and meander‐line elements, which generates parallel resonances. Multiple metallic square loops are designed in the bandpass FSS to produce series and parallel resonances. The simulation results show that the 3 dB transmission band ranges from 6.55 to 8.39 GHz, and the minimum insertion loss of 0.5 dB is at 7.47 GHz. The dual‐polarized FSR realizes two transmission zeros on both sides of the passband. The reflection coefficient lower than −10 dB is from 3.68 to 13.67 GHz. Moreover, the FSR is manufactured and measured.
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