Near-field focusing multi-target adaptive microwave energy transmission system and method

Abstract

The invention discloses a near-field focusing multi-target adaptive microwave energy transmission system and method, and belongs to the technical field of power generation, power transformation or power distribution. When a plurality of target devices of the receiving end need to be supplied with power, the guide signals and the power signals of the target devices are modulated into guide power signals to form multi-frequency-point guide power signals; a transmitting end extracts power and amplitude information of a multi-frequency-point guide power signal received by multiple channels, generates a transmitting end array normalized amplitude weight matrix of target equipment according to the amplitude information of a guide signal of the target equipment, and determines output power of the transmitting end according to the power information of the target equipment. The method comprises the following steps: performing mixer processing on a guide signal and a double-frequency local oscillator signal to obtain a composite signal conjugated with the guide signal in phase, performing power amplification according to power information and amplitude weight information of each path to form a multi-path multi-frequency-point feed signal, and forming a plurality of wave beams of different frequency points through a transmitting antenna array, and tracking energy transfer is carried out on a plurality of target devices at the same time.

Description

technical field [0001] The invention belongs to wireless energy transmission technology, relates to a multi-target microwave wireless energy transmission system and method, in particular discloses a near-field focusing multi-target self-adaptive microwave energy transmission system and method, which belongs to power generation, power transformation or power distribution technical field. Background technique [0002] Wireless energy transfer technology is a valuable charging technology that can charge mobile phones, laptops, electric vehicles, light-emitting diodes, and other devices. The existing WPT technology can be mainly divided into the following two categories according to the different energy transmission carriers and the distance of the transmission distance: short-range wireless energy transfer and long-distance wireless energy transfer. Short-range wireless energy transfer mainly includes electric field coupling, magnetic induction coupling, and magnetic coupling ...

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Problems solved by technology

[0008] The purpose of the present invention is to address the deficiencies of the above-mentioned background technology, to provide a near-field focused multi-target adaptive microwave energy transmission system and method, by modulating the power information of the target device in the pilot signal, the amplitude of the pilot signal The information determines the distribution of the transmit power of each channel, and then generates the variable gain of the adaptive target device power information according to the distribution of the transmit power of each channel, and adjusts the power of the transmit beam of each channel through the variable gain of the adaptive target device power information. Meet the power requirements of the target device, realize the near-field focusing of the power transmission of different far and near target devices and track and transfer energy to multiple target devices, and solve the poor near-field focusing effect of the wireless microwave energy transmission method of the direction backtracking method question

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