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An electromagnetic metasurface unit and corresponding antenna

An electromagnetic super-antenna technology, which is applied in the field of electromagnetic meta-surface units and antennas made of such electromagnetic meta-surface units, can solve problems such as high base station costs, and achieve the effect of increasing the coverage area and increasing the width

Active Publication Date: 2022-02-01
CHENGDU UNIV OF INFORMATION TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

For areas with relatively high communication needs, communication companies generally choose to increase the number of base stations to meet user needs, but will bear high base station costs

Method used

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  • An electromagnetic metasurface unit and corresponding antenna
  • An electromagnetic metasurface unit and corresponding antenna
  • An electromagnetic metasurface unit and corresponding antenna

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Embodiment Construction

[0028] The present invention will be further described in detail through specific embodiments below.

[0029] The invention realizes 450° reflection phase shift under the condition of 10GHz working frequency by controlling the size of the electromagnetic metasurface unit. Using the genetic algorithm to automatically optimize the phase distribution of the flat-top wide beam with only phase weighting, and realize the phase compensation through the electromagnetic metasurface unit, and finally propose a 21x21 electromagnetic surface flat-top wide-beam reflective antenna with a gain of 21dBi, half The power beam width reaches 15°; at the same time, a focused beam electromagnetic surface reflective antenna of the same size is designed with a beam width of 5°. Compared with the latter, the half-power beam width of the former is nearly 10° wider.

[0030] 1. Electromagnetic metasurface unit

[0031] Such as Figure 1 to Figure 3 As shown, the unit structure is divided into three la...

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Abstract

The present invention provides an electromagnetic metasurface unit and a corresponding antenna, wherein the electromagnetic metasurface unit comprises an upper radiating metal layer, a middle dielectric substrate and a lower metal ground; the radiating metal layer has the following structure: the center is A circular ring with a certain width, four disks of radius R are connected to the outer edge of the circular ring, and the circular disks are evenly distributed around the circular ring; a ring belt surrounds the structure formed by the circular ring and the circular disk , the distance between the inner side of the annular zone and the outer side of the inner ring or disk is the same. The invention realizes 450° reflection phase shift under the condition of 10GHz working frequency by controlling the size of the electromagnetic metasurface unit. The genetic algorithm is used to automatically optimize the phase distribution of the flat-top wide beam with only phase weighting, and the phase compensation is realized through the electromagnetic metasurface unit, and finally the purpose of increasing the half-power beam width is achieved.

Description

technical field [0001] The invention relates to the field of electromagnetic surfaces, in particular to an electromagnetic metasurface unit and an antenna made of the electromagnetic metasurface unit. Background technique [0002] The artificial electromagnetic metasurface antenna is a kind of quasi-periodic structure formed by arranging patches or aperture units with different working states according to a two-dimensional rectangular grid, which can spatially shift the incident planar electromagnetic wave. [0003] In recent years, the electromagnetic surface (metasurfce, MS) has continuously attracted great attention in the electromagnetic field. MSs generally consist of periodic arrangements of units with subwavelength periodic or locally aperiodic structures. Over the past five years, the MS has ushered in a golden age of research in theory and practice. Many applications of MS have emerged in the field of focusing, anomalous refraction / reflection orientation, surface ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q13/02
CPCH01Q1/38H01Q1/48H01Q13/02
Inventor 杜国宏孙筱枫邓伟
Owner CHENGDU UNIV OF INFORMATION TECH
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