Reconfigurable Radio Frequency Identification Tag Based on Electromagnetically Induced Transparency

Abstract

The invention discloses a reconfigurable radio frequency identification tag based on electromagnetic induced transparency, which belongs to the field of wireless communication. It includes several metamaterial structure layers, the metamaterial structure layer includes an outer layer structure excited by voltage and an inner layer structure arranged in the outer layer structure and not excited by voltage, the outer layer structure is coupled with the inner layer structure; The metamaterial structure layer is electrically connected to a bias voltage. The present invention generates electromagnetic resonance frequency points through the coupling between the outer layer structure and the inner layer structure, forms an electromagnetically induced transparent resonance transmission window, greatly shortens the identification time, and improves the Q value and sensitivity of the resonant frequency of the label; at the same time, it uses The change of the number of inner layer structures realizes different coding of the identification information carrier, and realizes the reconfigurability of multiple transmission windows of the radio frequency identification tag. By adjusting the length of the inner layer structure, the resonant frequency and bandwidth of the radio frequency identification tag can be adjusted, and the frequency can be tuned and the relative bandwidth is relatively large.

Description

technical field [0001] The invention relates to a radio frequency identification label, in particular to a reconfigurable radio frequency identification label based on electromagnetic induced transparency, which belongs to the field of wireless communication. Background technique [0002] Radio frequency identification is a communication technology that can identify specific targets and read and write related data through radio signals without the need for mechanical or optical contact between the identification system and specific targets. The current radio frequency identification system can be divided into low frequency system (30 ~ 300KHz), medium and high frequency system (3 ~ 30MHz) and ultra high frequency and microwave system (300MHz ~ 3GHz or greater than 33GHz) according to the frequency band used. As the basis of high-tech and information standardization for fast, real-time and accurate collection and processing of information, as well as its application advantage...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing electronic tags cannot be reconfigured, and there are defects such as long identification time and poor confidentiality, which lead to the poor scalability of the electronic tags, and are prone to collisions and information leakage during the simultaneous capture of multiple tags.

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