A Highly Selective Rasorber Based on Second-Order Resonance

Miniaturized frequency selective rasorber with a X‐band transmission band using cross band resonator

“…In Reference 10, the square rings with two stubs in the band realize the two‐band transmission response. Some FSRs with the transmission band in the middle of the absorption band have been proposed, 11‐13 Xia et al 11 use two different lossy layers, two independent absorption bands can be obtained. In Reference 12, design using a lossy FSS that consists of miniaturized meander lines and lumped resistors, achieve an absorption band on each side of the pass band.…”

“…In Reference 12, design using a lossy FSS that consists of miniaturized meander lines and lumped resistors, achieve an absorption band on each side of the pass band. In Reference 13, a stub resonator and lumped resistor architecture achieves a highly selective passband. There is also FSR with only one transmission band and absorption band, 14,15 in Reference 14 graphene flake are used as omnidirectional planar resistors to achieve low absorption and high transmission FSR.…”

Reconfigurable Frequency Selective Rasorber Covering Extremely Wide Transmission Frequency Range

“…Compared with the A-T and T-A types with a single transition region between transmission and absorption bands, the A-T-A or dual-band rasorbers exhibit more transition bands with unacceptable absorption or transmission performance. To reduce the width of transition bands, X. Xiu et al utilized high-order FSS to improve the selectivity of the transmission band for their A-T-A rasorber [15]. However, the resultant narrow transmission band is not favored in broadband applications.…”

Absorptive frequency-selective structures and their applications in antenna systems of low radar cross section

“…In the meantime, structures with similar performance of AFST were termed with different names in the literature, such as frequency selective rasorber (FSR) [80][81][82][83][84][85][86][87][88][89][90][91][92][93][94][95][96][97][98], frequency selective radome [99,100] and absorptive/transmissive FSS [101][102][103][104]. The early implementations of AFST structure were coming from the modified design of Salisbury screen absorbers [18,19,105], which are originally a lossy sheet located above a conducting plate.…”

“…Based on the structural view, two categories of AFST design methods can be distinguished, which are based on cascading 2-D FSS structure [80,[82][83][84][85][107][108][109][110][111][112][113][114][115][116] and utilizing 3-D FSS design [94][95][96][97][98][117][118][119][120][121].…”