Open AccessBroadband polarisation‐independent metasurface electromagnetic energy harvester with high capture efficiency
Author(s) -
Younesiraad Hemn,
Bemani Mohammad
Publication year - 2020
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.2019.0902
Subject(s) - broadband , resistive touchscreen , bandwidth (computing) , return loss , microwave , electromagnetic radiation , solver , acoustics , optics , electromagnetic simulation , materials science , energy harvesting , physics , optoelectronics , energy (signal processing) , electrical engineering , electronic engineering , engineering , computer science , telecommunications , quantum mechanics , antenna (radio) , programming language
This study presents a broadband metasurface harvester with polarisation‐insensitive and high harvesting efficiency. The proposed metasurface constitutive main cell consists of two intertwined modified inner and outer Jerusalem cells with two combined different resonance frequencies to obtain a broadband bandwidth. The parameters of the proposed cell are optimised to capture the energy of ambient electromagnetic waves with the least possible return loss and deliver it to the resistive loads through optimally positioned vias. The optimum load resistance value for the proposed harvester is 100 Ω . The simulation results obtained from CST Microwave Studio solver show relative band width of 18 % from 8.75 to 10.5 GHz for different polarisation angles under a normal incident plane wave. Finally, an array of 8 × 8 cells of the proposed harvester has been fabricated and its electromagnetic properties have been measured which show good agreement with the simulation results.