Fast time reversal algorithm for multi-dynamic target wireless energy transfer and generation device

Abstract

The invention provides a fast time reversal algorithm for multi-dynamic target wireless energy transfer and a generation device, wherein multi-target energy transfer is controlled in a time division multiplexing mode, phase conjugation is realized in a radio frequency mixing form, and wireless energy transfer based on phase conjugation is realized by a direction backtracking array based on heterodyne mixing, and adaptive tracking of multi-dynamic target wireless energy transfer is realized. The technical key point of the invention comprises the main technologies of mode control based on time division multiplexing, navigation signal transmitting and receiving, phase conjugate signal processing, klystron amplification and the like. Wireless energy transfer is carried out based on time division multiplexing and phase conjugation, the point-to-multipoint moving target energy transmission problem is solved, and the method can be applied to a microwave wireless energy transmission system of a medium-low speed moving target. According to the invention, through transmitting of incoming waves in any direction received by an antenna unit and meeting of the phase conjugation principle, the incoming waves in any direction are backtracked, the principle is simple, the scheme is simple and efficient, and the engineering practicability is high.

Description

technical field [0001] The invention belongs to the technical field of microwave wireless energy transmission, and in particular relates to a fast time inversion algorithm and a generating device for multi-dynamic target wireless energy transmission. Background technique [0002] Nowadays, wireless smart devices play an increasingly important role in people's lives, from parking spaces to drones, from smart homes to smart cities. With the upgrading of these devices, their power consumption is getting higher and higher. The growing demand for wireless charging of these devices is driving the development of wireless energy transfer technology. [0003] Wireless energy transfer systems rely on electromagnetic wave radiation to work. by Friis formula [0004] P RM =(λ / 4πD) 2 P t G t G r (1) [0005] Due to the spatial attenuation characteristics of electromagnetic waves, as the working distance becomes longer, the transmission efficiency will decrease. To improve the tr...

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Problems solved by technology

[0006] Due to the high cost of precise beam control systems, current microwave energy transfer systems are mostly point-to-point static target energy transfer, which greatly limits the use scenarios of wireless energy transfer

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