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Digital programmable super surface

A metasurface, digital technology, applied in electrical components, antenna arrays, circuits, etc., can solve the problem of unknown parameters of artificial electromagnetic coal, achieve the effect of flexible design method and avoid medium parameters

Active Publication Date: 2014-10-01
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a digital programmable metasurface to solve the problem that the existing artificial electromagnetic coal quality parameters are unknown and can only achieve fixed functions

Method used

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Embodiment Construction

[0015] In the present invention, the digital programmable metasurface is composed of a digital control unit and an artificial electromagnetic surface. Among them, the artificial electromagnetic surface is composed of a specially designed artificial cell structure, which integrates a switching diode, and exhibits two different electromagnetic steady states under two different bias voltages, marking the two Electromagnetic steady state is "1" and "0". The digital control unit provides the bias voltage of each artificial unit structure, and different bias voltages enable the corresponding unit structure to switch between two electromagnetic stable states in real time. The artificial unit structure can be coded differently by writing different control words through the digital control unit. Under different codes, the reflection phase of the unit structure is different, and the different reflection phases interfere with each other to form different reflection waves. , we can reali...

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Abstract

The invention discloses a digital programmable super surface. The digital programmable super surface is composed of a digital control unit and a controlled artificial electromagnetic surface, wherein the artificial electromagnetic surface is formed by artificial unit structures periodically arrayed, a switching diode is integrated in each artificial unit structure, the artificial unit structures can present two different electromagnetic characteristics under two different bias voltages, and namely each unit structure can be switched between two electromagnetic states in real time. The switching is realized through the bias voltages provided by the digital control part, the different bias voltages can be provided for the different unit structures, the artificial surface can achieve different electromagnetic functions, and each function corresponds to a set of control codes of the digital control unit. The digital programmable super surface has the advantages of being simple in design process, flexible, easy and convenient to use, and easy to machine and has important application prospects in high-performance antennas and the aspect of reducing a radar scattering cross section.

Description

technical field [0001] The invention belongs to the field of novel artificial electromagnetic media, in particular to a digital metasurface based on a programmable artificial surface. Background technique [0002] The new artificial electromagnetic medium is usually composed of periodic or quasi-periodically arranged sub-wavelength artificial unit structures. Using this artificial medium, people can control or even design the behavior of electromagnetic waves. This ability has made the new artificial electromagnetic medium in the past ten years. It has attracted extensive attention from all walks of life. In the process of people applying new artificial electromagnetic media, the artificial unit structure is usually uniformly distributed or gradiently changed, that is, the medium parameters of the new artificial electromagnetic medium are constant or slowly gradient in space, which means that the new artificial electromagnetic medium obeys continuous The medium parameter di...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q21/00
Inventor 崔铁军万向齐美清
Owner SOUTHEAST UNIV
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