Design of a Dual-polarized Notch Band Absorber with High Band Edge Selectivity and Broad Absorption Bandwidth

A polarization insensitive notch band absorber (NBA) is presented. The proposed design offers a flat notch band with high band edge selectivity. Its |S11| ≤ 0.2 dB notch bandwidth extends from 8.32-8.78 GHz, which is sandwiched between a lower and an upper 10-dB absorption band with fractional bandwidths (FBW) greater than 74.5% (3.62-7.92 GHz) and 46.27% (9.12-14.61 GHz), respectively. The performance of the designed notch band absorber is verified by comparing the numerically simulated results with the measurement results.