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Dual-passband frequency selective surface structure and unit structure thereof

A technology of frequency selective surface and unit structure, applied in the field of electromagnetic waves, it can solve the problems of single filter frequency band, poor structural stability, large size of FSS structural unit, etc., and achieve small resonance frequency and bandwidth, good angular stability, and no impact on structural performance. Effect

Pending Publication Date: 2021-06-01
西安旭彤电子科技股份有限公司
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Problems solved by technology

[0004] The disadvantages of the existing frequency selection surface for satellite communication frequency bands are that the filtering frequency band is single, the structural stability is poor, and it cannot meet the requirements of more scenarios and higher performance, and the existing FSS structural unit is relatively large in size. Can no longer meet the current demand for miniaturized structures

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  • Dual-passband frequency selective surface structure and unit structure thereof
  • Dual-passband frequency selective surface structure and unit structure thereof
  • Dual-passband frequency selective surface structure and unit structure thereof

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Embodiment Construction

[0029] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the dual-passband frequency-selective surface structure and its unit structure according to the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. In the embodiment of the present disclosure, the dual passbands are C-band and K-band.

[0030] The aforementioned and other technical contents, features and effects of the present invention can be clearly presented in the following detailed description of specific implementations with accompanying drawings. Through the description of specific embodiments, the technical means and effects of the present invention to achieve the intended purpose can be understood more deeply and specifically, but the accompanying drawings are only for reference and description, and are not used to explain the technical aspects of ...

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Abstract

A dual-passband frequency selective surface structure and a unit structure thereof belong to the technical field of electromagnetic waves. The surface structure is characterized by comprising a metal layer and a dielectric substrate which are sequentially arranged from top to bottom; a cross-shaped gap and a stepped gap are formed in the metal layer; the center of the cross-shaped gap coincides with the center of the metal layer; the number of the step-shaped gaps is four, and the step-shaped gaps are located in four areas separated by the cross-shaped gap and sequentially rotate by 90 degrees around the center of the structure; and the cross-shaped gap is connected with the step-shaped gap. The dual-passband frequency selective surface structure has extremely strong filtering characteristics near two frequency points of 6.7 GHz and 18.1 GHz, satellite communication signals working at the dual frequency points can be protected from being interfered by other frequency signals, the resonant frequency has no deviation when TE and TM polarized incident waves are vertically irradiated, and in a TE mode and a TM mode, when incident waves are irradiated at different angles, the resonant frequency and the bandwidth are slightly changed, and the structural performance is not influenced.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic waves, and in particular relates to a double-passband frequency-selective surface structure and a unit structure thereof. Background technique [0002] Frequency Selective Surface (FSS) is a two-dimensional periodic array structure, which can pass through electromagnetic waves without loss or low loss in a specific frequency band, and make electromagnetic waves outside the frequency band be shielded and reflected, which can effectively control the transmission of electromagnetic waves and reflections, similar to spatial filters. Due to its unique filtering characteristics, FSS can be widely used in electromagnetic protection, electromagnetic compatibility, antennas, filters, etc. [0003] Satellite communication mainly refers to radio communication between earth stations or earth stations and spacecraft for signal forwarding through communication satellites. Satellite communication mainly...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0026
Inventor 李毅
Owner 西安旭彤电子科技股份有限公司
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