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A Magnetically Omnidirectional Transparent Material Conforming to the Uniaxial Perfectly Matched Layer Model

A technology for perfectly matching layers, transparent materials, applied in the field of magnetic transparent materials

Active Publication Date: 2021-07-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is still no material for TM polarized electromagnetic waves incident from any angle, which can completely pass through without reflection.
[0004] In addition, so far in the field of transformation optics (Transformation Optics), the homogeneous materials obtained by linear transformation (Linear Transformation) are all materials with reduced-parameter approximation (Reduced-parameter approximation). Therefore, the ideal transformation optics in free space is also blank

Method used

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  • A Magnetically Omnidirectional Transparent Material Conforming to the Uniaxial Perfectly Matched Layer Model
  • A Magnetically Omnidirectional Transparent Material Conforming to the Uniaxial Perfectly Matched Layer Model
  • A Magnetically Omnidirectional Transparent Material Conforming to the Uniaxial Perfectly Matched Layer Model

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specific Embodiment

[0043] Such as figure 2 As shown, in the present invention, the cross-shaped sub-wavelength units with a length of 5 mm in the x-axis direction and a z-axis direction and a length of 5.6 mm in the y-axis direction are closely arranged along the x-axis direction and the y-axis direction to obtain perfect matching in all angles in free space transparent material. In this embodiment, the thickness of the first dielectric plate 1 is 0.5 mm, and the thicknesses of the second dielectric plate 2 and the third dielectric plate 3 are 0.25 mm respectively. The thickness of copper used for the first metal subwavelength open loop resonator 4 , the second metal subwavelength open loop resonator 5 and the metal U-shaped structure 6 is all 0.018mm. Such as figure 1 As shown, a=5mm, a1=0.8352mm, a2=0.15mm, a3=0.2mm, a4=0.8262mm, a5=1.1148mm, a6=0.1mm, a7=0.3mm, w1=0.2mm, w2=3.3296 mm, w3=1.5148mm, t1=0.25mm, t2=0.018mm, t3=0.5mm, p=5.6mm, l1=0.15mm, l2=0.075mm, l3=1.68mm, l4=0.15mm, l5=0....

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Abstract

The invention discloses a magnetic omnidirectional transparent material conforming to a uniaxial perfect matching layer model. The transparent material includes at least one sub-wavelength unit in the shape of a cross, and each sub-wavelength unit includes a first dielectric plate, a first metal sub-wavelength open loop resonator, a second metal sub-wavelength open loop resonator, a second dielectric plate, and a second metal sub-wavelength open loop resonator. Three dielectric plates and metal I-shaped structure, the first metal sub-wavelength open-circuit ring resonator, the first dielectric plate and the second metal sub-wavelength open-circuit ring resonator are stacked sequentially from top to bottom, and the second dielectric plate, metal I-shaped structure and the third dielectric board are stacked in sequence to form a branch dielectric board, and the two branch dielectric boards are vertically fixed to the middle of the upper and lower surfaces of the first dielectric board. The invention has the advantages of simple structure, thin thickness, light weight, perfect matching with free space, and can be widely used in the fields of electromagnetic compatibility, anti-electromagnetic interference and the like.

Description

technical field [0001] The invention belongs to the field of artificial media, and in particular relates to an omnidirectional perfectly matched magnetic transparent material that conforms to a uniaxial perfect matched layer model and is realized based on an artificial electromagnetic medium construction method. Background technique [0002] With the rapid development of radar and wireless communication technologies, the demand for a Frequency Selective Surface (FSS) with an independent transmission frequency band is gradually increasing. FSS is a planar two-dimensional periodic structure. As a spatial filter of incident waves, its application frequency bands are continuously promoted, covering almost from the microwave frequency band to the visible light frequency band. In the microwave frequency band, FSS is used in hybrid radome to reduce the radar cross section (RCS) of the target; at the same time, it plays an important role in many fields such as artificial electromagn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0013H01Q15/0026
Inventor 高源叶德信
Owner ZHEJIANG UNIV
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