| Issue |
E3S Web Conf.
Volume 680, 2025
The 4th International Conference on Energy and Green Computing (ICEGC’2025)
|
|
|---|---|---|
| Article Number | 00038 | |
| Number of page(s) | 9 | |
| DOI | https://doi.org/10.1051/e3sconf/202568000038 | |
| Published online | 19 December 2025 | |
A Planar Rectenna at 2.45 GHz With Circular Polarization for Wireless Power Transmission
1 LABTIC, ENSA of Tangier, Abdelmalek Essaâdi University, Tetouan, Morocco
2 LABTIC, ENSA of Tetouan, Abdelmalek Essaâdi University, Tetouan, Morocco
3 Nantes Université, CNRS, IETR, UMR 6164, F-44000 Nantes, France
* Corresponding author: ayoub.elmai@etu.uae.ac.ma
This study presents the design and analysis of a compact circularly polarized rectenna operating at 2.45 GHz, intended for wireless power transmission (WPT) applications. The proposed structure includes a 2x2 patch array antenna and a voltage doubler rectifier circuit, both optimized to maximize RF-DC conversion efficiency. Simulations, carried out using ADS and another electromagnetic solver show excellent performance with a reflection coefficient (S₁₁) below -10 dB, an axial ratio below 3 dB in the ISM band, and a maximum gain of 11.14 dB for the antenna array. The RT5880 substrate (εᵣ = 2.2, tanδ = 0.0009) and 35 μm metal thickness were chosen to balance performance and simplicity of design. The results show an RF-DC conversion efficiency of up to 73.69% at 27 dBm, confirming the potential of this design for mobile WPT applications such as powering drones.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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