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Electromagnetic energy collection structure integrating surface plasmon coupler and planar semi-Maxwell fisheye lens

A technology of fisheye lens and collection device, which is applied in the direction of electrical components, antennas, etc., can solve the problems of rectification circuit efficiency reduction and energy conversion efficiency reduction, and achieve the effect of increasing power density, improving rectification efficiency, and increasing input power

Inactive Publication Date: 2016-07-13
SHANGHAI UNIV
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Problems solved by technology

In the case of low micro-power input, the efficiency of the rectifier circuit will drop sharply (less than 10%), thereby reducing the energy conversion efficiency of the entire system

Method used

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  • Electromagnetic energy collection structure integrating surface plasmon coupler and planar semi-Maxwell fisheye lens
  • Electromagnetic energy collection structure integrating surface plasmon coupler and planar semi-Maxwell fisheye lens
  • Electromagnetic energy collection structure integrating surface plasmon coupler and planar semi-Maxwell fisheye lens

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Embodiment 1

[0019] see figure 1 and figure 2 , an electromagnetic energy harvesting device integrating a metasurface and a half-Maxwellian fisheye lens, including a dielectric substrate 1, a microstrip line 2, a half-Maxwellian fisheye lens body 3, a metasurface 4, and a ground plate 7 located under the dielectric substrate; The phase gradient of the above-mentioned metasurface 4.

[0020] Further, the main body 3 of the half-Maxwell fisheye lens is a surface metal structure, and more than one square metal patch is periodically arranged in a semicircular shape; the size of each square metal patch gradually decreases from the center of the circle to the outer circumference .

[0021] Further, the metasurface 4 is composed of H-shaped structural units periodically arranged in rows and columns; the size of the H-shaped structural units is close to the half-Maxwell fish-eye lens main body 3 and laterally away from the half-Maxwell fish-eye lens main body 3 Gradient decreases on one side. ...

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Abstract

The invention discloses an electromagnetic energy collection structure integrating a surface plasmon coupler and a planar semi-Maxwell fisheye lens, comprising a dielectric substrate, a micro-strip line, a half-Maxwell fisheye lens body, and a super surface. The phase of the super surface changes gradually. The semi-Maxwell fisheye lens body is of a surface metal structure, more than one square metal patch is periodically distributed in rows and columns into a semi-circular shape, and the sizes of the square metal patches decrease gradually from the center to the periphery. The super surface is composed of H-shaped structure units periodically distributed in rows and columns, and the sizes of the H-shaped structure units decrease gradually from a side close to the semi-Maxwell fisheye lens to a side away from the semi-Maxwell fisheye lens. Spatial electromagnetic wave can be effectively converted into surface wave and energy can be concentrated, so that efficient energy collection is realized. The electromagnetic energy collection structure has a good application prospect in such fields as the Internet of things, radio frequency identification (RFID), wireless sensor network (WSN) and energy collection and recovery.

Description

technical field [0001] The invention relates to an electromagnetic energy collection device, in particular to an electromagnetic energy collection device integrating a metasurface and a half-Maxwell fisheye lens, which belongs to the field of new artificial electromagnetic materials, energy collection and recovery, and is applied to the Internet of Things, radio frequency identification (RFID) ) and wireless sensor networks (WSN) and other fields. Background technique [0002] As the two core technologies of the Internet of Things, radio frequency identification (RFID) and wireless sensor network (WSN) have attracted great attention from the international academic and business circles, and government departments of various countries are also actively promoting the development of the Internet of Things. Internet of things technologies such as WSN and RFID have penetrated into various fields: such as national defense security, space detection, environmental monitoring, etc. R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/02
CPCH01Q15/00H01Q15/0086H01Q15/02
Inventor 周永金肖前循
Owner SHANGHAI UNIV
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