Open AccessChipless frequency selective rasorber with stable performance for oblique incidence
Author(s) -
Lee I.G.,
Oh W.S.,
Kim Y.J.,
Hong I.P.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.2429
Subject(s) - materials science , resistor , band pass filter , conductor , tunable metamaterials , planar , optoelectronics , selective surface , optics , equivalent circuit , insertion loss , electrical conductor , dielectric , electrical engineering , composite material , voltage , metamaterial , engineering , computer science , physics , computer graphics (images)
This Letter presents the design of a frequency‐selective rasorber that selectively absorbs undesired (out‐of‐band) signals and selectively transmits desired (in‐band) signals by using planar resistor technology without lumped elements. To implement the selective absorption characteristic on the upper surface, a lossy layer was implemented in the proposed structure by using a nickel‐phosphorus metal alloy‐based resistor–conductor material. Furthermore, stable transmissive/absorptive performance against polarisation and incidence angle was implemented by laminating a quarter‐wavelength thickness of dielectric spacer and bandpass type frequency selective surface together. The resulting design was verified through experimental measurements.