Superbroadband Diffuse Wave Scattering Based on Coding Metasurfaces: Polarization Conversion Metasurfaces

Passive techniques for target radar cross section reduction: A comprehensive review

“…In this case, the PRRS bandwidth (presented in the third column of Table 2) can be considered as the 10‐dB monostatic RCSR bandwidth. As it is presented in Table 2, the best results for PCR and PRRS bandwidth have been achieved in References 78, 93, 95 with the values of 96% (PCR), 125% and 126.5%, respectively.…”

“…However, most of them have not been directly investigated for RCSR. Over the last few years, several designs have been proposed in which the PRRS has been directly applied for RCSR 78,84,88,91‐95 . Jia et al 84 proposed a PRRS by a quasi L‐shaped patch to form a periodic structure which enhanced the PR bandwidth to 103.6% with a PCR of 50%.…”

“…Moreover, improved bistatic RCSR performance was obtained for incident angles less than 30°. The widest bandwidths among the mentioned articles in this category were achieved in Reference 93 and Reference 95. Akbari et al 93 proposed a wideband polarization rotation‐based RCSR structure using a two‐layer metasurface.…”

“…The widest bandwidths among the mentioned articles in this category were achieved in Reference 93 and Reference 95. Akbari et al 93 proposed a wideband polarization rotation‐based RCSR structure using a two‐layer metasurface. In this design, the polarization was rotated by 90° using a combination of special binary elements “0” and “1.” An optimized arrangement was formed to distribute the scattered EM waves which resulted in suppression of the maximum bistatic RCS over a broadband of incident angles for both polarizations.…”

“…Additionally, most of them have been performed only for monostatic RCSR at normal incident angle ignoring the wave polarization. Hence, nowadays, the modern passive techniques and structures based on phase cancelation or destructive interference using surfaces including frequency selective surface (FSS), 52‐55 EM band gap (EBG), 56‐59 artificial magnetic conductor (AMC), 47,48,60‐77 polarization rotation reflective surface (PRRS), 78‐95 metasurfaces, 96‐145 and hybrid methods, 146‐149 receive a lot of attention to improve the mentioned conventional techniques and overcome their limitations. In the recent decades, researchers have made a lot of efforts on these modern passive RCSR techniques and numerous works have been proposed and completed in order to achieve a system similar to the ideal RCSR system.…”