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Tunable metamaterial antenna for wireless power transmission system

A wireless power transmission and metamaterial technology, applied in antennas, electrical components, circuit devices, etc., can solve the problems of low energy transmission efficiency and large size, and achieve the effect of simple and mature technology, small size, and changing the propagation direction.

Inactive Publication Date: 2018-04-17
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional wireless charging systems are bulky and have low energy transfer efficiency

Method used

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  • Tunable metamaterial antenna for wireless power transmission system
  • Tunable metamaterial antenna for wireless power transmission system
  • Tunable metamaterial antenna for wireless power transmission system

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] figure 1 is the structure diagram of the first metamaterial, figure 2 is the structure diagram of the second metamaterial. Combine them to form a three-dimensional shape in space, and there are metamaterial arrays on xoy, yox, and xoz planes. The directivity of the antenna is significantly improved under the same volume condition. Among the two structures: the first structure is, d=3mm, p=2.6mm, l=0.2mm, g=0.02mm, b=0.65mm; the second structure is, d=3mm, p=2.6mm, l=0.2mm, g=0.02mm, b=0.65mm. Use the two structures described above to form a combined unit structure. If the wireless coil is in the xoz plane, then there are two second structures placed side by side in the xoz direction. The yoz and xoy structures each have a first structure and The secon...

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Abstract

The invention discloses a tunable metamaterial antenna for a wireless power transmission system. The overall size of the material is 75mm*75mm*5mm. The structure is small and compact. After an hfss simulation analysis, two metamaterial structures are used. On the basis of combination of the two metamaterial structures, a three-dimensional mode is formed in space; and metamaterial arrays are arranged on xoy, yox, and xoz planes. Therefore, the directivity of the antenna is improved obviously on the same size condition. The tunable metamaterial antenna has the following beneficial effects: firstly, the antenna is manufactured by using a pcb engraving printing machine, so that the manufacturing is carried out conveniently and the process is simple and mature; secondly, the metamaterial structure has the small size and is placed between a transmitting coil and a receiving coil of wireless charging, so that the usage becomes convenient; and thirdly, the metamaterial has the excellent property, the propagation direction of the electromagnetic wave is changed, the directional coefficient is increased, and the directivity of the antenna from the transmitting coil to the receiving coil is enhanced.

Description

technical field [0001] The invention belongs to the radio field, in particular to a tunable metamaterial antenna for a wireless power transmission system, which has a compact structure and high energy transmission efficiency. Background technique [0002] The charging market has developed rapidly in recent years, with huge room for development, and electronic products with wireless charging functions have become a trend. Traditional wireless charging systems are bulky and have low energy transfer efficiency. In view of the above situation, the present invention will study the wireless power transmission system based on the tunable metamaterial antenna to improve the transmission efficiency. The material is compact and small in size. To solve this problem, we use the following method. First, use hfss simulation to find a compact and frequency-tunable metamaterial antenna structure, analyze the interaction between coils and coils and metamaterial antennas through time-harmo...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H02J50/20
CPCH01Q15/0086H02J50/20
Inventor 谷成轩秀巍张宇曾永华
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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