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2-bite, programmable and digital artificial electromagnetic metasurface

An artificial electromagnetic and metasurface technology, applied in the direction of electrical components, antennas, etc., can solve the problems of reducing the radar scattering cross section, low ability, and inability to achieve anisotropic reflection, etc., to improve the ability to manipulate electromagnetic waves, flexible control, simple and intuitive design Effect

Inactive Publication Date: 2018-02-02
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although multi-beams can also be achieved with 1-bit programmable metasurfaces, they cannot achieve anisotropic reflection, and their ability to reduce radar cross section is lower than that of digital metasurfaces with phase 2-bit quantization

Method used

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  • 2-bite, programmable and digital artificial electromagnetic metasurface
  • 2-bite, programmable and digital artificial electromagnetic metasurface
  • 2-bite, programmable and digital artificial electromagnetic metasurface

Examples

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Embodiment 1

[0023] Such as figure 1 As shown in (a), an artificial electromagnetic metasurface unit of the present embodiment includes: a grounded metal plate 1, a dielectric substrate 2, four metal resonant elements 3, three PIN diodes 4, four metal pads 6 and a choke Inductance 5; wherein, a dielectric substrate is placed on the upper surface of the ground metal plate; four metal resonant elements are engraved on the upper surface of the dielectric substrate; each metal resonant element is connected to the metal pad through a choke inductor; each adjacent A PIN diode is connected across two metal resonant elements; a metal pad in the middle is connected to the ground metal plate through a blind hole; the other metal pads are connected to the bottom three of the dielectric substrate through through holes and isolated from the metal ground plate The metal pads on the bottom three metal pads and the ground metal plate are respectively soldered with wires to connect to the microcontroller o...

Embodiment 2

[0032] Such as Figure 7 As shown in (a), an artificial electromagnetic metasurface unit of the present embodiment includes: ground metal plate 1, dielectric substrate 2, four metal resonant elements 3, five PIN diodes 4, four metal pads 6 and choke Inductance 5; wherein, a dielectric substrate is placed on the upper surface of the grounded metal plate; four metal resonant elements are engraved on the upper surface of the dielectric substrate; each metal resonant element is connected to the metal pad through a choke inductor; the middle two metal A PIN diode is connected across the resonant element, and two PIN diodes are connected between two adjacent metal resonant elements on both sides, so the switching states of the two PIN diodes are the same; a metal pad in the middle passes through Blind holes are connected to the ground metal plate; other metal pads are connected to the three metal pads isolated from the metal ground plate at the bottom of the dielectric substrate thr...

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Abstract

The invention relates to the field of an artificial electromagnetic metasurface, and proposes a 2-bite, programmable and digital artificial electromagnetic metasurface. By changing a state combinationof a diode, the artificial electromagnetic metasurface unit can acquire four types of phase response, namely, 0, Pi second, Pi, three times of Pi second respectively corresponding to digital codes 0,1, 2 and 3. By combining a digital control technology, the code combination of a surface of the artificial electromagnetic metasurface can be changed, and various dynamic electromagnetic functions onthe surface of the same artificial electromagnetic metasurface can be achieved. By the artificial electromagnetic metasurface, the current situation that most of artificial electromagnetic metasurfaces lack dynamic changeable programming property is changed, the problem that a 1-bite programmable and digital artificial electromagnetic metasurface cannot be used for achieving reflection in different directions is solved, and the design freedom of a control electromagnetic wave of the metasurface is improved. By the 2-bite, programmable and digital artificial electromagnetic metasurface provided by the invention, electromagnetic information control and processing can be achieved, and the 2-bite, programmable and digital artificial electromagnetic metasurface has important application prospect in the field of communication and imaging.

Description

technical field [0001] The invention relates to the field of artificial electromagnetic materials, in particular to a 2-bit programmable digital artificial electromagnetic metasurface. Background technique [0002] Artificial electromagnetic metasurfaces have flexible electromagnetic information control and processing capabilities, and have received great attention in the fields of communication, imaging, stealth, and remote sensing. Artificial electromagnetic metasurfaces are composed of different types of subwavelength resonant units on a two-dimensional plane. By changing the size and combination of units, the amplitude and phase of electromagnetic waves can be flexibly controlled, thereby achieving extraordinary electromagnetic properties. Compared with metamaterials, artificial electromagnetic metasurfaces have been widely concerned by scholars in the fields of physics and engineering because of their advantages such as thin thickness, small mass, and easy fabrication. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0006H01Q15/0086
Inventor 双雅冀炜阮恒心李廉林
Owner PEKING UNIV
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