WIFI dual-band band-stop frequency selective surface

A frequency-selective surface, dual-band technology, applied to waveguide devices, electrical components, circuits, etc., can solve problems such as increased power consumption

Pending Publication Date: 2021-11-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

People use WIFI to transmit a large amount of data in indoor places such as offices, supermarkets, homes or conference halls. With the advent of the 5G era, the amount of information transmitted by wireless communication is growing explosively. With continuous development, the demand for high-speed, large-capacity, and multi-access device commun...

Method used

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  • WIFI dual-band band-stop frequency selective surface
  • WIFI dual-band band-stop frequency selective surface
  • WIFI dual-band band-stop frequency selective surface

Examples

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Embodiment Construction

[0013] Such as Figure 4 As shown, the frequency selective surface of this embodiment is composed of several identical unit structure periodic arrangements, such as figure 1 As shown, each unit structure includes a dielectric substrate, a metal layer arranged on the front of the dielectric substrate; the metal layer includes a circular patch, and a square ring patch arranged in the circular patch; the medium The centers of the substrate, the circular patch, and the square ring patch are coincident.

[0014] The material of the metal layer is copper; the outer diameter d1 of the circular patch is 26.0712mm, and the inner diameter d2 is 24.8024mm; the length L of the outer side of the square ring patch is 16.0724mm, and its line width W is 2.0039mm.

[0015] The length and width of the dielectric substrate are both 28.0013 mm, and the thickness is 1.0192 mm. The material used is FR-4, and the relative dielectric constant is 4.3.

[0016] From figure 2 , image 3 It can be s...

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Abstract

The invention discloses a WIFI dual-band band-stop frequency selective surface, and belongs to the technical field of microwave filtering. The frequency selective surface is formed by periodically arranging a plurality of same unit structures; each unit structure comprises a dielectric substrate and a metal layer arranged on the front surface of the dielectric substrate; the metal layer comprises an annular patch and a square annular patch arranged in the annular patch. By selecting a proper resonant structure and accurately setting the size parameters of the resonant units, signals in frequency bands of 2.2 GHz-2. 79 GHz and 4.98 GHz-5. 87 GHz can be reflected, signals in other frequency bands can be transmitted, and normal indoor communication is not interfered while WIFI signals dissipated to the space are recycled.

Description

technical field [0001] The invention relates to a frequency selection surface of WIFI dual frequency bands, and belongs to the technical field of microwave filtering. Background technique [0002] Frequency Selective Surface (FSS) refers to a one-dimensional or two-dimensional periodic structure composed of metal patch units or aperture units periodically arranged on a dielectric substrate, with bandpass (aperture FSS) or bandstop ( SMD FSS) and other filtering characteristics are essentially a spatial filter. The electromagnetic wave filter function in the open space presented by the frequency selective surface makes it have great application value in the fields of science and engineering (especially in the field of national defense and military industry), and has always been a research topic of microwave and antenna scholars. important direction. The shape, size, medium loading method and periodic arrangement of the FSS unit will all affect the frequency response charact...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H01P1/20
CPCH01Q15/0013H01P1/20
Inventor 桂丁胡林赵德双梁木生
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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