Abstract
Our research proposes a new antenna array for recovering RF energy, which in-corporates pattern and polarization diversity. We conducted experiments to validate the performance of the optimized model, which provides an impedance bandwidth of 5.5 to 6 GHz according to measurements. By switching the input port, the antenna system can generate four circular polarization diversity beams at ±15 and ±45, with two left-hand circular polarization beams and two right-hand circular polarization beams. Additionally, the antenna array achieves low cross-polarization radiation patterns, an excellent axial ratio around the center frequency, and a low envelope correlation coefficient across the working spectrum. The antenna array has recorded gains of 5.3 and 6.6 dB for energy recovery applications. We designed and simulated all circuits, including the 5.8 GHz antenna array, using ADS and CST software. We calculated and optimized all trans-mission line widths and lengths with a 50 Ω characteristic impedance using the LineCalc tool and Tuning function, respectively.
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Acknowledgments
The authors are grateful to STRS Laboratory of Institut National des Postes et Telecommunication in RABAT Morocco and members of Electronics, Instrumentation and Measurement Faculty of Sciences and Techniques (FST), University my Ismail in Errachidia, for support with regard to simulation software and facilities.
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Ihlou, S., EL Abbassi, A., Bakkali, A., Tizyi, H. (2024). Beamforming Antenna Array with Circular Polarization for an RF Energy Recovery System an UAV. In: Ben Ahmed, M., Boudhir, A.A., El Meouche, R., Karaș, İ.R. (eds) Innovations in Smart Cities Applications Volume 7. SCA 2023. Lecture Notes in Networks and Systems, vol 906. Springer, Cham. https://doi.org/10.1007/978-3-031-53824-7_45
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DOI: https://doi.org/10.1007/978-3-031-53824-7_45
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