Further investigation on solant–rectenna-based flexible Hilbert-shaped metamaterials

Autor: Taha A. Elwi, Sarah G. Abdulqader
Jazyk: angličtina
Rok vydání: 2020
Předmět:
rectennas
energy harvesting
metamaterial antennas
electromagnetic wave polarisation
antenna radiation patterns
photonic band gap
silver
microstrip antennas
copper
fr4 substrate
copper nanoparticles
silver nanoparticles
flexible solar panel
self-powered devices
solant–rectenna output terminals
antenna structure
solant radiofrequency port
hilbert-shaped unit cells
rectangular patch
partial ground plane
square electromagnetic band gap defects
energy harvesting applications
self-powered wearable wireless devices
low-profile metamaterial-based antenna
flexible hilbert-shaped metamaterials
ultra-wideband self-powered wearable wireless devices
rectifier circuit
cst mws software packages
hfss software packages
size 0.394 mm
frequency 0.915 ghz
voltage 1.42 v
frequency 0.8 ghz to 10 ghz
cu
ag
Materials of engineering and construction. Mechanics of materials
TA401-492
Zdroj: IET Nanodielectrics (2020)
Druh dokumentu: article
ISSN: 2514-3255
DOI: 10.1049/iet-nde.2020.0013
Popis: This study discusses the design of a low-profile metamaterial-based antenna consisting of a 3 × 5 array of Hilbert shaped unit cells organised as a rectangular patch. The antenna is backed by with a partial ground plane loaded with square electromagnetic band gap defects for energy harvesting applications in the context of ultra-wideband self-powered wearable wireless devices. The antenna is mounted on a 28 × 32 mm FR4 substrate, with a thickness of 0.394 mm, a relative permittivity of 4.2 and a loss tangent of 0.02. The antenna is also printed on a flexible solar panel for self-powered devices through solant–rectenna output terminals. The proposed solant–rectenna is found to cover the frequency range from 0.8 up to 10 GHz. The I–V characteristics of the solar panel are measured with and without the antenna structure to realize low shadowing effects. After that, the solant radiofrequency (RF) port is connected to a rectifier circuit to create a rectenna port that collects the RF energy and converts it to an output DC voltage at 0.915 GHz. It is found that the proposed rectenna provides an output DC voltage of 1.42 V with a conversion efficiency of 90%.
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