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A dual-band reconfigurable frequency selection surface and a control method thereof

A frequency-selective surface and waveband technology, applied in the field of electromagnetic metamaterials, can solve problems such as inability to quickly adapt to changing electromagnetic environments, and achieve the effects of easy processing and good angular stability

Inactive Publication Date: 2019-01-11
HARBIN ENG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] After the traditional frequency selective surface is processed, its electromagnetic characteristics are basically fixed, and it cannot quickly adapt to the changing electromagnetic environment.

Method used

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  • A dual-band reconfigurable frequency selection surface and a control method thereof
  • A dual-band reconfigurable frequency selection surface and a control method thereof
  • A dual-band reconfigurable frequency selection surface and a control method thereof

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] combined with figure 1 And attached figure 2 , the invention discloses a dual-band reconfigurable frequency selective surface, comprising a dielectric substrate 1 and a closed cell structure 2 arranged on the upper side of the dielectric substrate. The closed unit structure 2 includes 4 PIN diodes and 4 metal opening units periodically extending along the horizontal and vertical directions; the metal opening units are square and include two short-line structures and two long-line structures, wherein , the two long-line structures are connected and perpendicular to each other, and the long-line structures and the short-line structures are parallel to each other; the four line structures have the same thickness d and form four sides of the metal opening unit. The direction of the PIN diode in the closed unit structure 2 is counterclockwise / clockwise, ...

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Abstract

The invention relates to a dual-band reconfigurable frequency selection surface and a control method thereof, which relates to the technical field of electromagnetic metamaterials. The present invention includes a dielectric substrate and a closure unit structure on an upper side of the dielectric substrate. The closed cell structure consists of four PIN diodes and four metal opening cells extending periodically in horizontal and vertical directions. The metal opening element is square and comprises two short-line structures and two long-line structures, wherein, the two long-line structures are connected with each other and perpendicular to each other, and the long-line structure and the short-line structure are parallel to each other; the four lines have the same thickness d and constitute four sides of the metal opening unit. The PIN diodes can be oriented counterclockwise / clockwise and are connected to the metal opening unit at both ends. By changing the switching state of the PINdiode, the frequency selection surface is in a reconfigurable state. The invention has the advantages of simple structure, easy processing and realization, reconfigurable function and double-wave bandfiltering, and has good application prospect.

Description

technical field [0001] The invention relates to the technical field of electromagnetic metamaterials, in particular to a dual-band reconfigurable frequency selective surface applicable in the fields of filters and radomes and a control method thereof. Background technique [0002] Frequency selective surface, or FSSs, is an infinite planar structure composed of the same patches or aperture units arranged periodically on a dielectric substrate. It has selective characteristics for electromagnetic waves with different operating frequencies, polarization modes and incident angles. When interacting, it shows obvious band-pass or band-stop filtering characteristics, which can reflect out-of-band electromagnetic waves while transmitting in-band electromagnetic waves. [0003] After the traditional frequency selective surface is processed, its electromagnetic characteristics are basically fixed, and it cannot quickly adapt to the changing electromagnetic environment. Reconfigurabl...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/002
Inventor 李文兴彭颗历圆圆杨航
Owner HARBIN ENG UNIV
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