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Patch antenna with multi-cell EBG for RF energy harvesting applications
Published online by Cambridge University Press: 25 August 2022
Abstract
In this paper, a ring patch antenna with 1 GHz of bandwidth and three resonances is designed for the RF energy harvesting application. Two complementary split-ring resonators (CSRR) is etched out from the patch, designed at 6.8 GHz, near feed to enhance the bandwidth from 267 MHz to 1 GHz. Due to the introduction of CSRR, two additional resonances at 6.4 and 7.4 GHz are obtained with gain 5.5 and 0.2 dB respectively. The gains at 6.8 and 7.4 GHz are enhanced to 8.3 and 2 dB respectively by cascaded circular mushroom electromagnetic bandgap structures (EBGs) with circular symmetry designed around the antenna. This ring patch antenna with cascaded EBG is integrated with a rectifier circuit based on voltage doubler topology (rectenna). The results of the rectenna show that, for an input power of 7 dBm to the rectifier circuit, a DC output voltage of 1.2 V with a power conversion efficiency of 40% is achieved.
Keywords
- Type
- Wireless Power Transfer and Energy Harvesting
- Information
- International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 5 , June 2023 , pp. 772 - 780
- Copyright
- © The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association
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