Flexible metasurface film capable of reducing SAR value

A metasurface, flexible technology, applied in electrical components, antennas, etc., can solve the problems of abnormal difficulty in estimation and analysis, difficult measurement and quantitative analysis, etc., and achieve the effect of reducing the SAR peak.

Pending Publication Date: 2021-05-07
深圳市信丰伟业科技有限公司
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Problems solved by technology

These factors make the estimation and analysis of SAR extremely difficult, and the difficulty of m

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  • Flexible metasurface film capable of reducing SAR value
  • Flexible metasurface film capable of reducing SAR value

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Embodiment Construction

[0025] The claims of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work also fall within the protection scope of the present invention.

[0026] It should be understood that, in the descriptions of the embodiments of the present invention, all directional terms, such as "up", "down", "left", "right", "front", "rear", etc. indicate the orientation or position The relationship is based on the orientation and positional relationship shown in the drawings or the conventional orientation or positional relationship of the product of the invention in use, which is only for the convenience of simplifying the description of the present invention, rather ...

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Abstract

The invention is suitable for the technical field of wireless communication. The invention discloses a flexible metasurface film capable of reducing an SAR value. The film comprises a wave-absorbing metal structure layer and a base material fixed with the wave-absorbing metal structure layer in sequence, and the wave absorbing metal structure layer is provided with a periodic resonance unit. When electromagnetic waves are incident to the periodic resonance unit, the electromagnetic response generated by the periodic resonance unit generates a new electromagnetic loss. Due to the special electromagnetic characteristic of absorbing the electromagnetic waves, incident waves completely enter the periodic resonance unit, the loss effect of the interior of the wave absorbing metal structure layer on the electromagnetic waves is improved, energy is completely consumed in the wave absorbing metal structure layer, a reflection coefficient and a transmission coefficient are both 0, wave absorption is achieved, and an SAR peak value is effectively reduced. By adjusting the size of the periodic resonance unit and the interval between the periodic resonance units, the SAR value absorption of different frequency bands can be realized, the contradiction between the radiation index of the antenna and the SAR peak value is avoided, and the film can be widely applied to 5G terminal products.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a flexible metasurface film suitable for reducing the SAR value in 5G terminal equipment. Background technique [0002] Due to the development of wireless communication technology, personal wireless terminal products have been widely popularized and applied. With the development of miniaturization and portability of terminal products, users often place such products within a relatively short distance from the body in daily usage scenarios. Therefore, the impact of electromagnetic energy radiated by wireless terminals on human health has become a topic of public concern. [0003] The Specific Absorption Rate (SAR) index is used internationally to measure the electromagnetic energy absorbed and consumed by the human body in an electromagnetic exposure environment. The physical meaning of SAR is the electromagnetic power absorbed or consumed by human tissue per unit...

Claims

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Application Information

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IPC IPC(8): H01Q17/00
CPCH01Q17/008
Inventor 詹昌漫
Owner 深圳市信丰伟业科技有限公司
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