[4] WEI J F, HE Y, BIE S W et al. Flexible design and realization of wideband microwave absorber with double-layered resistor loaded FSS[J]. Journal of Physics D: Applied Physics, 52, 185101(2019).

[5] VARKANI A R, FIROUZEH Z H, NEZHAD A Z. Equivalent circuit model for array of circular loop FSS structures at oblique angles of incidence[J]. IET Microwaves, Antennas & Propagation, 12, 749-755(2018).

[6] MEI P, ZHANG S, LIN X Q et al. A triple-band absorber with wide absorption bandwidths using an impedance matching theory[J]. IEEE Antennas and Wireless Propagation Letters, 18, 521-525(2019).

[8] MOTEVASSELIAN A, JONSSON B L G. Design of a wideband rasorber with a polarisation-sensitive transparent window[J]. IET Microwaves, Antennas & Propagation, 6, 747-755(2012).