Stepped aperture coupling broadband antenna with double-layer non-uniform metasurface structure

An aperture coupling, broadband antenna technology, applied in the direction of antenna, antenna components, radiating element structure, etc., can solve problems such as insufficient, and achieve the effect of mature production process, small antenna size, and good market prospects

Active Publication Date: 2020-06-02
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, loading metasurfaces can increase the impedance bandwidth of microstrip antennas to about 30%, which is obviously not enough for broadband wireless communication systems

Method used

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  • Stepped aperture coupling broadband antenna with double-layer non-uniform metasurface structure
  • Stepped aperture coupling broadband antenna with double-layer non-uniform metasurface structure
  • Stepped aperture coupling broadband antenna with double-layer non-uniform metasurface structure

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The present invention is a stepped aperture coupled broadband antenna with a double-layer non-uniform metasurface structure, such as figure 1 As shown, it includes a dielectric board a1 and a dielectric board b3 arranged in parallel in the horizontal direction, and the dielectric board a1 and the dielectric board b3 are connected by plastic screws 2; an air cavity is left between the dielectric board a1 and the dielectric board b3.

[0028] Such as figure 2 As shown, 21 rectangular radiation patches a4 of 5×5 lacking four corners are evenly placed on the top surface of the dielectric plate a1;

[0029] Such as image 3 As shown, 21 rectangular radiation patches b5 of 5×5 lacking four corners are evenly placed on the top surface of the dielectric board b3;

[0030] Such as Figure 4 As shown, the center of the bottom surface of the...

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Abstract

The invention discloses a stepped aperture coupling broadband antenna with a double-layer non-uniform metasurface structure. The antenna comprises a dielectric plate a and a dielectric plate b which are arranged in parallel along the horizontal direction, and an air cavity is formed between the dielectric plate a and the dielectric plate b; rectangular radiation patches a without four corners areuniformly placed on the top surface of the dielectric plate a; rectangular radiation patches b without four corners are uniformly placed on the top surface of the dielectric plate b; the bottom surface of the dielectric plate b is provided with a coplanar waveguide and a stepped coupling aperture, and the coplanar waveguide is coupled in the stepped coupling aperture. According to the invention, the characteristics of low gain and narrow band of the microstrip antenna are improved, and the characteristics of miniaturization, high gain and broadband of the antenna are realized.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic fields and microwaves, and relates to a stepped aperture-coupled broadband antenna with a double-layer non-uniform metasurface structure. Background technique [0002] With the continuous development of communication technology, spectrum resources are becoming increasingly tight. Broadband technology is conducive to improving spectrum utilization and signal transmission rate, and has become one of the inevitable trends in the development of modern wireless communication systems. Among them, the difficulty in the design of broadband antennas is mainly to overcome the inherent weaknesses of the existing antenna structure, and to achieve broadband while meeting other performance requirements in the application of actual communication systems. The emergence of metamaterials can just solve these problems. [0003] A metasurface is an artificial layered material with a thickness smaller than a w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50
CPCH01Q1/38H01Q1/364H01Q1/50
Inventor 王丽黎张智欢刘庆
Owner XIAN UNIV OF TECH
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