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Ultra-wideband dual-polarization chipless RFID label

An RFID tag and dual-polarization technology, applied in the field of the Internet of Things, can solve the problems of low frequency band utilization, large size, small tag capacity, etc., and achieve the effect of improved spectrum utilization, increased quality factor, and compact tags

Active Publication Date: 2016-11-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these designs only use one polarization direction, which has defects such as low frequency band utilization, small tag capacity, and large size.

Method used

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  • Ultra-wideband dual-polarization chipless RFID label
  • Ultra-wideband dual-polarization chipless RFID label
  • Ultra-wideband dual-polarization chipless RFID label

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] An ultra-wideband dual-polarized chipless RFID tag, comprising an antenna radiating unit 2 and a dielectric substrate 1, the antenna radiating unit 2 is located on the upper surface of the dielectric substrate 1, the antenna radiating unit is composed of a square patch, and the square There are four slotted structures on the patch, which are the first, second, third and fourth slotted structures respectively. The first and third slotted structures are located on the main diagonal of the square patch and are about The center of the square patch is symmetrical, and the second and fourth slot structures are located on the secondary diagonal of the square patch and are symmetrical about the center of the square patch.

[0030] The first, second, third and fourth slots have the same structure and are composed of at least one slot. When the number of slots is more than one, the slots are nested, and the slots are arrow-shaped reverse slot structures. .

[0031] The arrow-sha...

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PUM

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Abstract

The invention discloses an ultra-wideband dual-polarization chipless RFID label. The ultra-wideband dual-polarization chipless RFID label comprises an antenna radiation unit and a medium substrate. The antenna radiation unit is arranged on the upper surface of the medium substrate. The antenna radiation unit is formed by a square paster. The square paster is provided with four open groove structures including first, second, third and fourth open groove structures. The first and third open groove structures are arranged on a main diagonal of the square paster and are centrally symmetric with respect to the square paster. The second and fourth open groove structures are arranged on an auxiliary diagonal of the square paster and are centrally symmetric with respect to the square paster. The label antenna has the advantages that miniaturization is realized, the capacity is large, the polarization isolation is high, the bandwidth efficiency is high, and printing is easy.

Description

technical field [0001] The invention relates to the field of the Internet of Things, in particular to an ultra-wideband dual-polarization chipless RFID tag. Background technique [0002] With the development of intelligent perception, recognition technology and pervasive computing, the Internet of Things (IoT) is called the third wave of the development of the world's information industry after computers and the Internet. Radio Frequency Identification (RFID) technology is an important part and key core technology of the Internet of Things. It can use radio frequency (Radio Frequency, RF) signals for non-contact two-way wireless communication, so as to realize automatic identification of objects. A typical RFID system consists of three parts: Reader, Tag and Application System. Among them, the tag plays the role of attaching to the object and sending the information of the object to the reader. Due to the large-scale application of billions of RFID tags, the deployment cos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077H01Q1/22H01Q1/38H01Q9/04
CPCH01Q1/2225H01Q1/38H01Q9/0407G06K19/07773Y02D30/70
Inventor 刘雄英王泽众常天海
Owner SOUTH CHINA UNIV OF TECH
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