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Z-shaped depolarized chipless RFID (Radio Frequency Identification) tag and system

An RFID tag and chipless technology, applied in the structural form of radiation elements, inductive record carriers, antennas, etc., can solve the problems of high manufacturing cost, inability to meet large-scale mass production and application, etc., and achieve convenient mass production and strong anti-interference ability, the effect of improving the isolation

Active Publication Date: 2017-01-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional chip label has high manufacturing costs due to the inclusion of integrated circuits and codec chips in its structure, which cannot meet the requirements of mass production and application.

Method used

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  • Z-shaped depolarized chipless RFID (Radio Frequency Identification) tag and system
  • Z-shaped depolarized chipless RFID (Radio Frequency Identification) tag and system
  • Z-shaped depolarized chipless RFID (Radio Frequency Identification) tag and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] like figure 1 As shown, a system composed of zigzag variable polarization chipless RFID tags includes a reader, a transmitting antenna TX, a receiving antenna RX and a label. The transmitting antenna TX and the receiving antenna RX are perpendicular to each other, and the transmitting antenna TX emits The vertically polarized wave is used as an interrogation signal. The horizontally polarized component transmitted back by the signal after passing through the tag can be received by the receiving antenna RX. The RCS of the received horizontal component shows an obvious resonance peak at some specific frequency points in the frequency domain. Encoding with a certain number of digits can thus be realized.

[0029] like figure 2 and image 3 As shown, the tag is composed of at least one zigzag variable polarization chipless RFID tag, and the zigzag variable polarization chipless RFID tag includes a label attachment unit 2, a metal floor 3 and a single-layer dielectric sub...

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PUM

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Abstract

The invention discloses a Z-shaped depolarized chipless RFID (Radio Frequency Identification) tag and a system. The tag comprises a tag patch unit, a metal floor and a single-layer dielectric substrate, wherein the tag patch unit is located on the upper surface of the single-layer dielectric substrate, the metal floor is located on the lower surface of the single-layer dielectric substrate, the tag patch unit is composed of two transverse branches and one longitudinal branch, the two transverse branches are respectively perpendicular to two ends of the longitudinal branch, and the tag patch unit is of a Z-shaped structure. The tag has the advantages that the tag is small, strong in anti-interference capability, easy to detect in a practical environment, simple in structure, easy to produce in batch and the like.

Description

technical field [0001] The invention relates to the field of chipless RFID, in particular to a zigzag variable polarization chipless RFID tag and a system. Background technique [0002] Radio Frequency Identification (RFID), as a wireless identification technology that identifies specific targets through microwave signals and reads and writes relevant data without establishing mechanical or optical contact between the identification system and specific targets, has been widely used. A general radio frequency identification system consists of readers, application systems, and tags, among which tags play an important role: With the wide application of the Internet of Things in transportation, logistics, industry and commercial retail industries, the number of items that need to be attached to RFID tags is increasing rapidly. One of the future development trends of RFID tags is to replace barcodes. This is because compared with existing barcode technology, RFID tags have the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077G06K7/00H01Q1/22H01Q1/38
CPCH01Q1/2225H01Q1/38G06K7/0008G06K19/0772Y02D30/70
Inventor 刘雄英包涵常天海
Owner SOUTH CHINA UNIV OF TECH
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