Tightly coupled rectifying metasurface array

Abstract

The invention discloses a tightly coupled rectifying metasurface array, which comprises periodically arranged M*N radiation units, wherein M, N are positive integers, and M, N are greater than or equal to 2; each radiation unit includes a metal patch, a dielectric substrate and a metal ground plate in sequence from top to bottom, each metal patch is composed of four identical rectifying diodes andgroove structures shaped like a Chinese character 'shan', each groove structure shaped like a Chinese character 'shan' is composed of a concave groove and a rectangular branch and located at one sideof the middle edge of the metal patch, one end of the rectangular branch is connected with the metal patch into a whole, the other end is connected with the rectifying diode in series and then connected with the corresponding rectangular branch so as to integrate the metasurface array and the rectifying diodes into the same plane, thereby achieving the cascade of the radiation units, and thus improving the DC output power. The tightly coupled rectifying metasurface array can be used for realizing wireless energy supply of power electronic equipment.

Description

technical field [0001] The invention belongs to the field of electronic science and technology, and in particular relates to a tightly coupled rectifying metasurface array, which can be used to realize wireless energy supply of power electronic equipment. Background technique [0002] With the development of electronic information technology and artificial intelligence, tens of thousands of communication equipment and power electronic equipment rely solely on batteries to provide energy, which will not only cause environmental pollution, but also fail to meet the requirements of continuous work. Therefore, a new power supply method is needed. As an energy supply method, wireless power transmission and electromagnetic energy harvesting can realize wireless charging. Because of its full-time, omnidirectional and long-range effects, it has been actively concerned in recent years. [0003] Electromagnetic energy harvesting can be achieved through metasurfaces coupled with rectif...

AI Technical Summary

Problems solved by technology

However, the disadvantages of this device are: 1) Since the rectification circuit and metasurface of each radiating unit are independently designed, the overall structure is not simple enough; voltage, making the structure unsuitable for high power environments

Although this structure can receive electromagnetic wave energy of different polarizations, there are still shortcomings: since the rectification circuits in this structure are independent of each other, there is no power superposition through structural cascading, and the withstand power and withstand voltage of the diode cannot be increased. Therefore, the output power of the structure is insufficient

[0006] To sum up, the main problem facing electromagnetic energy harvesting at present is that the output power of the electromagnetic energy harvesting system is generally low due to the mutual coupling of radiation units and electromagnetic interference, and the compactness of the overall structure cannot be achieved.

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