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Active Frequency Selective Surface Structures Based on Varactor Diodes

A technology of frequency selective surfaces and varactor diodes, applied in antennas, electrical components, etc., can solve the problems of being unable to quickly adapt to the changing electromagnetic environment, unable to adjust or change, and achieve insensitivity, simple structure, and moving range wide effect

Active Publication Date: 2020-08-14
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the most researched and widely used frequency selective surfaces are passive frequency selective surfaces. Quickly adapt to the changing electromagnetic environment and maximize its filtering characteristics

Method used

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  • Active Frequency Selective Surface Structures Based on Varactor Diodes
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  • Active Frequency Selective Surface Structures Based on Varactor Diodes

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Examples of the embodiments are shown in the accompanying drawings, and the specific embodiments described in the following embodiments of the present invention are only illustrative illustrations of specific embodiments of the present invention, and are intended to explain the present invention, rather than constituting a limitation of the invention.

[0027] figure 1 , figure 2 They are the front view and rear view of the active FSS structural unit of the present invention, respectively. It can be seen from the figure that the active frequency selective surface structure of the present invention is based on varactor diodes, including a square dielectric plate 10 located in the middle, and respectively etched on the dielectric plate 10. The top metal layer and the bottom metal layer on the upper and lower surfaces of the board 10, ...

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Abstract

The invention provides an active frequency selective surface structure based on a varactor diode, comprising a dielectric plate, and a top metal layer and a bottom metal layer respectively arranged onthe upper surface and the lower surface of the dielectric plate; the dielectric plate is provided with a metal through hole penetrating the dielectric plate and communicating with the top metal layerand the bottom metal layer; the bottom metal layer comprises a first metal sheet vertically centrally arranged, and two second metal sheets symmetrically arranged along the first metal sheet, and thesecond metal sheets are horizontally centrally distributed; the top metal layer comprises a center metal sheet and four metal sheets arranged around the center metal sheet and distributed symmetrically in the center. A metal gap is for between two adjacent metal sheets, and a varactor diode is load between that metal gaps. The structure is based on the load of a varactor diode, simple in structure, simple in feeding mode, adjustable in resonant frequency and wide in moving range, and keeps the insensitivity of resonant frequency to polarization, so the structure is suitable for complex electromagnetic environment.

Description

technical field [0001] The invention relates to a frequency selective surface structure, in particular to an active frequency selective surface structure based on a varactor diode, belonging to the technical field of electromagnetic waves. Background technique [0002] Frequency Selective Surface (FSS) is a two-dimensional periodic array structure, which is a spatial filter in essence, and exhibits obvious band-pass or band-stop filtering characteristics when interacting with electromagnetic waves. Frequency selective surface has a specific frequency selective effect, so it is widely used in microwave, infrared to visible light bands. In addition, due to its good filtering of electromagnetic waves transmitted in space, it is widely used in military and civilian communications, especially in radars, radomes, and aircraft stealth. It is also used in electromagnetic stealth, electromagnetic compatibility, electronic areas of confrontation. [0003] At present, the most resear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0053
Inventor 幸泽钊朱剑魏永安
Owner NANJING UNIV OF POSTS & TELECOMM
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