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Cylindrical frequency selective surface structure

A technology of frequency selective surface and cylinder, applied in the direction of radiation unit cover, waveguide type devices, electrical components, etc., can solve problems such as poor filtering characteristics and stability

Inactive Publication Date: 2016-03-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention proposes a cylindrical frequency selective surface structure in order to solve the common problem of poor filtering characteristics and poor stability of the curved surface frequency selective surface

Method used

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  • Cylindrical frequency selective surface structure
  • Cylindrical frequency selective surface structure
  • Cylindrical frequency selective surface structure

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specific Embodiment approach 1

[0019] Specific implementation mode 1. Combination figure 1 Describe this embodiment, the cylindrical frequency selective surface structure described in this embodiment, it comprises metal plate 1 and the dielectric layer 3 that thickness is 1mm, the dielectric constant of described dielectric layer 3 is 2.2, and magnetic permeability is 1; The surface of the metal plate 1 is engraved with a through hole 2 in the shape of a rectangular grid, the shape of the through hole 2 is Y-shaped, and the distance between every two adjacent Y-shaped holes along the column surface is 40mm. The metal plate 1 According to the cylindrical curvature with a radius of curvature of 160mm, the dielectric layer 3 is attached to the inner side of the metal plate 1 .

[0020] The material of the metal plate described in this embodiment is a metal with high electrical conductivity.

specific Embodiment approach 2

[0021] Embodiment 2. This embodiment is a further description of the cylindrical frequency selective surface described in Embodiment 1. The length of the three arms of the Y-shaped hole is 16 mm, and the width is 4 mm.

specific Embodiment approach 3

[0022] Specific implementation mode three, combination image 3 Describe this embodiment, this embodiment is the difference between the cylindrical surface frequency selection surface structure described in Embodiment 1, that the shape of the through hole 2 is a circular hole, the diameter of the circular hole is 32 mm, and every two circular holes The distance between the edges along the cylindrical direction of the dielectric layer is 8mm.

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Abstract

A cylindrical frequency selective surface structure belongs to the technical field of wireless communication and solves the problems of poor filtering characteristic and stability generally existing in a curved frequency selective surface. The cylindrical frequency selective surface structure disclosed by the invention comprises a metal layer and a dielectric layer with a thickness of 1 millimeter, the dielectric constant of the dielectric layer is 2.2, the magnetic conductivity of the dielectric layer is 1, through holes are fully etched on the surface of the metal plate in a rectangular lattice shape and are Y-shaped, the distance of each two adjacent Y-shaped through holes is 40 millimeters, the metal plate (1) is bent according to a cylindrical surface with a curvature radius of 160 millimeters, and the dielectric layer is in contact with the inner side of the metal layer. The cylindrical frequency selective surface structure is suitably used as a conformal cylindrical antenna cover.

Description

technical field [0001] The invention belongs to the technical field of wireless communication. Background technique [0002] Frequency Selective Surface, FSS is a single-layer or multi-layer periodic structure, generally formed by the arrangement of aperture units on metal patches or metal screens according to certain rules. As a spatial filter, FSS exhibits different scattering characteristics for electromagnetic waves of different frequencies, different incident angles and polarization modes, so that the transmission and reflection of electromagnetic waves can be effectively controlled. When the frequency of the incident wave is near the resonant frequency of the aperture unit or patch unit, it will show the characteristics of total reflection or total transmission. FSS can be used as radome, multi-frequency reflector antenna, polarizer and waveguide filter, etc., and is widely used in electronic equipment in the field of communication. So far, most of the theoretical re...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01Q1/42
CPCH01P1/20H01Q1/42H01Q1/425
Inventor 刘志航马爽吴群杨国辉
Owner HARBIN INST OF TECH
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