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Information capacity expansion method for chipless RFID electronic tag

A technology of electronic tags and information capacity, which is applied in the expansion of the encoding capacity of chipless RFID electronic tags and the field of information storage of chipless RFID electronic tags, which can solve the problems of storing tag information, immature tag structure, and small amount of tag information, etc.

Pending Publication Date: 2018-06-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For chipless RFID technology, the biggest difficulty is how to store tag information without IC chip
In addition, there are still many problems in the development of chipless RFID technology at this stage. The structure of the tag is not mature, the performance is unstable, the amount of information that the tag can store is very small, and there is a contradictory relationship between the amount of information and the size of the tag.

Method used

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  • Information capacity expansion method for chipless RFID electronic tag
  • Information capacity expansion method for chipless RFID electronic tag
  • Information capacity expansion method for chipless RFID electronic tag

Examples

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Embodiment 1

[0032] refer to figure 1 , the chipless RFID electronic tag with six codes in the first embodiment of the present invention consists of six spiral microstrip filter units with different structures, which are respectively located on both sides of the 50Ω microstrip line, and a dielectric substrate as a carrier. The six-digit coded chipless RFID electronic tag has an "arc-shaped defect structure" etched on the back of the tag 1, tag 2, tag 4, and tag 5. Wherein the physical dimensions of the filter units of different numbers are different, and the width of the helical structure H=5W S +4D S ;The length L of the spiral microstrip structure of the six filter units from number 1 to number 6 s decrease successively, the width W of the six helical microstrips s , the gap D in the spiral microstrip structure s and the gap D between the two helical microstrip structures g are the same, and the gap between the helical structure and the microstrip line is small enough to not be conn...

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Abstract

The invention discloses an information capacity expansion method for a chipless RFID electronic tag and relates to an optimization technology for chipless RFID tags. According to the method, information capacity of the chipless RFID electronic tag is expanded, an arc-shaped defected ground structure is innovatively added against the defect that a chipless RFID tag of an original structure has small capacity, the tag realizes hybrid coding by use of frequency characteristics and amplitude characteristics of signals, and therefore the information capacity of the tag is increased.

Description

technical field [0001] The present invention relates to the technical field of chipless RFID electronic tag information coding, in particular to the expansion of chipless RFID electronic tag coding capacity, and specifically refers to a method for adding a new arc-shaped defect structure to a chipless RFID electronic tag to increase the amount of coding : Applied to information storage of chipless RFID electronic tags. technical background [0002] Radio frequency identification (RFID), also known as wireless identification, is a method that can identify specific targets and read and write related data through radio signals without establishing mechanical or optical contact between the identification system and specific targets. As a high-tech and information standardization basis for fast, real-time and accurate collection and information processing, this technology is one of the ten important technologies in the 21st century. The advantages of contact and high recognition...

Claims

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Application Information

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IPC IPC(8): G06K19/077
CPCG06K19/0772G06K19/07749G06K19/0775G06K19/07773
Inventor 万国春邝永康夏子为顾权刘雯静童美松
Owner TONGJI UNIV
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