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Broadband electromagnetic phase-adjustable metasurface structure

A metasurface and phase technology, applied in electrical components, antennas, etc., can solve problems such as the difficulty of implementing electromagnetic metasurfaces, and achieve the effect of simplifying circuits and enhancing engineering achievability.

Active Publication Date: 2021-07-02
NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to cope with the diversity of electromagnetic environments in reality, adaptive electromagnetic metasurfaces have emerged. However, due to material properties and other reasons, electromagnetic metasurfaces with broadband phase-tunable materials are difficult to realize.

Method used

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Embodiment Construction

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses.

[0027] Such as figure 1 As shown, according to the embodiment of the present application, a broadband electromagnetic phase tunable metasurface structure is disclosed, including at least three layers, wherein the top layer is a metal structure layer 10, the middle layer is a dielectric layer 20, and the back layer is a metal reflection layer. Layer 30.

[0028] The metal structure layer 10 forms a plurality of periodically arranged array units on the surface of the dielectric layer 20 . ...

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Abstract

The invention discloses a broadband electromagnetic phase-adjustable metasurface structure. A metal structure layer of the broadband electromagnetic phase-adjustable metasurface structure forms a plurality of array units arranged periodically on the surface of a dielectric layer, and each array unit comprises a closed square boundary frame and an electric harmonic oscillator arranged at the center of the boundary frame. The electric harmonic oscillator comprises a cross arranged in the center of the square boundary frame, side lines located on the outer sides of the free ends of the cross and variable capacitance diodes connected between the free ends of the cross and the corresponding side lines. The side length of the boundary line frame is 31 to 39 mm; the side line length of the electric harmonic oscillator is 9-11mm, the line width of the electric harmonic oscillator is 0.5-1mm, the line width of the cross is 1-1.5 mm, the length of the cross is 10-12mm, the inductance of the variable capacitance diode is less than or equal to 0.4 nH, and the initial capacitance value is less than or equal to 0.5 pF. The polarization-independent electromagnetic wave phase wavefront adjustable performance is realized by adopting a symmetrical structure, and the adjustable phase can exceed 320 degrees within the maximum range of 4.8-6.2 GHz.

Description

technical field [0001] The present application relates to the technical field of electromagnetic metasurface (metasurface), in particular to a metasurface structure with adjustable broadband electromagnetic phase. Background technique [0002] With the increasing complexity of the electromagnetic environment, the demand for targeted applications of electromagnetic metasurfaces is increasing. Affected by the material processing technology and material properties, in general, once the electromagnetic metasurface is processed, it has a fixed structure, and its electromagnetic properties are also relatively fixed. [0003] In order to cope with the diversity of electromagnetic environments in reality, adaptive electromagnetic metasurfaces have emerged. However, due to material properties and other reasons, electromagnetic metasurfaces with broadband phase-tunable materials are difficult to realize. Contents of the invention [0004] The present application discloses a broadba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0013H01Q15/0026H01Q15/002
Inventor 郭少军沈同圣邹春荣周晓松赵德鑫
Owner NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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