Open AccessTriple‐band polarisation‐independent metamaterial absorber at mm wave frequency band
Author(s) -
Deng Guangsheng,
Xia Tianyu,
Yang Jun,
Yin Zhiping
Publication year - 2018
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2017.0126
Subject(s) - metamaterial absorber , optics , materials science , metamaterial , plane wave , ground plane , absorption (acoustics) , dielectric , transverse plane , electric field , ku band , substrate (aquarium) , surface wave , optoelectronics , tunable metamaterials , physics , electrical engineering , engineering , oceanography , structural engineering , quantum mechanics , geology , antenna (radio)
The authors present a triple‐band metamaterial absorber operating at mm wave frequency band. The absorber is composed of periodic unit cells, which consists of a new pattern and a ground plane, placed in two sides of a dielectric substrate made of polyimide film. To best understand the absorption mechanisms, full‐wave simulation results for the electric field, surface current, and power loss distributions are presented. The experimental results, for a transverse electric‐polarised normal incident wave, show three distinctive absorption peaks, at frequencies 101.25, 108.75, and 129 GHz with absorptivities of 92.5, 94.9, and 88.6%, respectively. The absorber is independent of the wave polarisation, where high absorption is achieved for a wide range of oblique angles of incidence.