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Wideband frequency selective absorber with high‐selective reflective‐band for RCS reduction applications
Author(s) -
Han Ye,
Xu Longjie
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32234
Subject(s) - wideband , materials science , bandwidth (computing) , selective surface , absorption band , tunable metamaterials , resistor , frequency band , lossy compression , absorption (acoustics) , optoelectronics , optics , out of band management , reduction (mathematics) , metamaterial , computer science , electrical engineering , telecommunications , engineering , physics , mathematics , voltage , artificial intelligence , geometry , composite material , network architecture , computer security , network management station
This article presents a wideband frequency selective absorber with a high selective reflective‐band for RCS reduction application. The proposed design consists of three metallic layers. With lossy resonance of the resistors‐loaded folded loop at the front layer, wide absorption performance is obtained. Then two independently lossless resonances are employed to introducing a flexible and high selective reflective‐band with full reflectance into the absorption band. The resultant absorbers have the thickness of only ~0.076 λ L at the lowest operating frequencies and exhibit a whole operating bands of 126.3%. Two absorption band with bandwidth of 60.3% and 44.5% have been achieved. A prototype of the proposed structure has been fabricated, whose measured results show reasonable agreement with the simulated responses under normal incidence.