Open AccessWide‐angle quad‐band polarisation‐insensitive metamaterial absorber
Author(s) -
Agarwal M.,
Behera A.K.,
Meshram M.K.
Publication year - 2016
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.2015.4134
Subject(s) - metamaterial absorber , transverse plane , materials science , optics , metamaterial , resonator , substrate (aquarium) , absorption (acoustics) , transverse magnetic , square (algebra) , optoelectronics , physics , tunable metamaterials , engineering , geometry , oceanography , mathematics , geology , structural engineering
Closed ring resonator (CRR)‐based quad‐band metamaterial absorber is presented. The unit cell of proposed absorber consists of four separate CRRs which are diagonally connected to square patches enclosed within an individual CRR. The structure is fabricated on 0.8 mm‐thick FR4 substrate. Simulated peak absorptivities of 98.5, 97.7, 94.8, and 96% are obtained at 4.34, 6.68, 8.58, and 10.64 GHz, respectively. The measured and simulated absorption characteristics of the proposed absorber are in good agreement. The proposed absorber is wide angle and polarisation insensitive and has identical absorption characteristics for both transverse‐electric and transverse‐magnetic polarised radiations.