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A multi-channel near-field information transmission system based on programmable metasurface

An information transmission system and information transmission technology, applied in the field of new artificial electromagnetic medium, can solve the problems of high cost and complex signal processing technology, and achieve the effect of saving cost and simplifying the system system

Active Publication Date: 2021-06-01
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional information transmission system, the modulation processing of the signal is completed in the baseband circuit, and then the signal is radiated outward through the antenna after being up-converted; and in order to achieve the purpose of multi-channel transmission of information, complex signal processing technology and expensive hardware architecture

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  • A multi-channel near-field information transmission system based on programmable metasurface
  • A multi-channel near-field information transmission system based on programmable metasurface
  • A multi-channel near-field information transmission system based on programmable metasurface

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Embodiment Construction

[0022] The multi-channel near-field information transmission system based on the programmable metasurface in the present invention includes a programmable metasurface and a digital control unit composed of several periodically arranged one-bit digital units, and the one-bit digital unit is integrated A controlled device, all the controlled devices on the programmable metasurface are combined in different states under the control of the digital control unit, thereby forming a programmable interface.

[0023] In one embodiment, the controlled device exhibits two different electromagnetic steady states under two different bias voltages, which are marked as "1" and "0". The digital control unit provides a time bias voltage for each one-bit digital unit, and different bias voltages enable the one-bit digital unit to switch between two electromagnetic stable states in real time to form different state combinations. When the digital control unit writes different control words to the ...

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Abstract

The invention discloses a multi-channel near-field information transmission system based on a programmable metasurface. The system includes a programmable metasurface and a digital control unit composed of several periodically arranged one-bit digital units. The scattering field of the entire metasurface is the scattered field superposition of all digital units. When changing the digitally encoded state of each unit, the entire orofacial scattering field changes accordingly. Therefore, designing different combinations of orofacial codes can control the energy distribution of scattered waves. The invention utilizes the space domain and time domain characteristics of the electromagnetic wave of the programmable metasurface to realize the multi-channel direct transmission of near-field information. The proposed system of the invention does not need a separate phase shifter and signal modulator, which greatly simplifies the system system, saving the cost of system development. It is expected to be widely used in near-field information transmission and signal processing.

Description

technical field [0001] The invention belongs to the field of novel artificial electromagnetic media, and in particular relates to a multi-channel near-field information transmission system based on a programmable metasurface. Background technique [0002] In the traditional information transmission system, the modulation processing of the signal is completed in the baseband circuit, and then the signal is radiated outward through the antenna after being up-converted; and in order to achieve the purpose of multi-channel transmission of information, complex signal processing technology and Costly hardware architecture. [0003] Programmable metasurface is a digitally reconfigurable artificial electromagnetic surface, which is composed of a large number of subwavelength digitally reconfigurable artificial units. Because the scattering field of the metasurface is the superposition of the scattering fields of all units, the characteristics of the electromagnetic field at a speci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H04B1/401H04B1/00
Inventor 万向崔铁军
Owner SOUTHEAST UNIV
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