Accurate Theoretical Models for Frequency Diverse Array Based Wireless Power Transmission

Zeeshan Ahmad, Zhonghan Wang, Zain ul Abidin Jaffri and Shudi Bao
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Zeeshan Ahmad: School of Electronic and Information Engineering, Ningbo University of Technology, Ningbo 315211, China
Zhonghan Wang: School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Zain ul Abidin Jaffri: College of Physics and Electronic Information Engineering, Neijiang Normal University, Neijiang 641100, China
Shudi Bao: School of Electronic and Information Engineering, Ningbo University of Technology, Ningbo 315211, China

Energies, 2022, vol. 15, issue 4, 1-12

Abstract: Wireless power transfer (WPT) is a well-known problem, and has received wide attention in the next generation industrial applications and consumer electronics. On the other hand, frequency diverse array (FDA) is a new concept with the ability to generate a range-angle dependent beampattern. Therefore, some researchers are engaged in designing WPT systems based on the FDA framework (FDA-WPT) instead of phased arrays. Unlike phased arrays, the FDA beampattern is time-variant. Therefore, existing beam collection efficiency models based on the phased array are not suitable for the FDA-WPT system. More importantly, the time-variant property of FDAs is usually ignored in the literature, and the system configuration of the target area where the power-harvesting end is located does not conform to the actual WPT scenario. In this paper, we derive and present accurate models of the FDA-WPT system. The power transfer performance of the corrected FDA-WPT system is then compared with the phased array based WPT system. Simulation results demonstrate that time-variant consideration in the FDA-WPT model causes difficulty in controlling the main beam direction to focus the power. The accurate FDA-WPT is theoretically investigated, and numerical simulations are implemented to validate the theoretical analysis.

Keywords: frequency diverse array; beam collection efficiency; phased array; wireless power transmission (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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