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Microwave narrowband wireless energy transmission method and device based on focused wave

A wireless energy transmission, narrow-band technology, applied in the direction of circuit devices, electrical components, etc., can solve the problems of difficulty in implementation, high cost, short pulse frequency bandwidth, etc., achieve design difficulty and production cost reduction, improve wireless energy transmission efficiency, The effect of increasing the receiving area

Inactive Publication Date: 2017-04-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these TR energy transmission systems basically use short pulses as test signals. When performing TR operations, high-speed analog-to-digital converters are required, which is difficult and costly to implement.
In addition, short pulses can transmit less energy per unit time, and short pulses have a wider frequency band, resulting in low rectification efficiency

Method used

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  • Microwave narrowband wireless energy transmission method and device based on focused wave
  • Microwave narrowband wireless energy transmission method and device based on focused wave
  • Microwave narrowband wireless energy transmission method and device based on focused wave

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Embodiment Construction

[0037] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and examples of implementation, so as to understand the features and advantages of the present invention more clearly.

[0038] The present invention provides a microwave narrowband wireless energy transmission method and device based on focused waves. The system structure diagram of the device is as follows figure 1 shown. The system of this example includes 1 powered antenna and 16 TR antennas. Both the receiving antenna and all TR antennas use a patch monopole antenna with a center frequency of 2.45GHz and a bandwidth of 500MHz, and form an energy receiving device and an energy transmitting device with some other devices respectively. 16 TR antennas are equally spaced at 12cm to form a square with a side length of 48cm, forming a "TR antenna array". In practical applications, the powered antenna can be set at any spatial position in the r...

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Abstract

The invention discloses a microwave narrowband wireless energy transmission method and device based on a focused wave and belongs to the technology of wireless energy transmission. Unlike a conventional wireless energy transmission mechanism and the broadband TR wireless energy transmission technology based on short pulses, a narrowband signal (bandwidth less than 10% of the center frequency) similar to the single frequency is used. A TR antenna array is used to transfer electromagnetic energy to a target point in a point focusing way. An omni-directional energy-receiving antenna is placed at the point focusing place in order to convert space electromagnetic wave into high-frequency current, and finally the high-frequency current passes through a rectifier circuit to be converted into DC output. Thus, the wireless transmission of the electromagnetic energy is achieved. In the present invention, the narrowband signal is used for TR wireless energy transmission. Compared with the short pulse, the narrowband signal can carry more energy in the unit time, and is higher in rectification efficiency. The method and device can adaptively track the target position without a complicated positioning system, and may achieve multi-target wireless energy transmission.

Description

technical field [0001] The method relates to wireless energy transmission technology, in particular to a microwave narrowband wireless energy transmission method based on electromagnetic focused waves. Background technique [0002] Wireless energy transmission refers to the technology of energy transmission without contact with visible physical media. The basic framework of the system is similar to that of wireless communication systems. However, the former focuses on energy transfer, while the latter focuses on information transfer. Wireless energy transmission does not require direct connection of metal electrodes, which can avoid exposed conductors and electric sparks. Compared with traditional wired energy transmission, wireless energy transmission has the advantages of high safety and convenient use. More importantly, wireless energy transmission can be used in some special occasions where wires cannot be erected, such as charging devices implanted in the human body, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/27
Inventor 李涛赵德双郭飞
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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