Miniature High Gain Slot-Fed Rectangular Dielectric Resonator Antenna For IoT RF Energy Harvesting

A Masius, Alphonsos and Wong, Yan Chiew and Lau, Kok Tee (2017) Miniature High Gain Slot-Fed Rectangular Dielectric Resonator Antenna For IoT RF Energy Harvesting. AEU - International Journal Of Electronics And Communications, 85. pp. 39-46. ISSN 1434-8411

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Radio-frequency (RF) energy harvesting is a promising candidate for alternative power source that can reduce the dependencies on batteries. However, its power density is very low which makes it crucial to have a high gain antenna to increase the power received by the system. This study presents the design of miniature high gain dielectric resonator antenna for RF energy harvesting application with high figure of merit to increase the power received. Numerical approximation is used to assist the antenna design and modelling. The design focused on three parameters which are the width, length, and height of the dielectric resonator. The performance, electric field density, and the radiation patterns of the dielectric resonator antenna have been observed by varying the design parameters. The effect of air gap to the performance is investigated and it is found that 8.11–13% gain improvement and up to 36% improvement in impedance matching is achieved through incorporating thin air gap between the dielectric resonator. Soda-lime glass with relative permittivity 7.75 is used which allows miniaturization and transparency. Experimental results show reasonable agreement to the simulations. The work shows highest antenna gain with smallest size with high FOM at 5 GHz ISM band compared to previous works.

Item Type: Article
Uncontrolled Keywords: Dielectric resonator antennas, RF energy harvesting, Glass antenna, High gain antenna, Air gap, Miniature antenna
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Electronics and Computer Engineering
Depositing User: Mohd Hannif Jamaludin
Date Deposited: 02 Jul 2018 08:00
Last Modified: 10 Jul 2021 17:18
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