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A radio frequency identification tag and a radio frequency identification system including the tag

A technology of radio frequency identification tags and tag antennas, applied in the field of radio frequency identification, can solve the problems of high cost and easy energy dissipation, and achieve the effects of improved radiation characteristics, good anti-metal properties, and small thickness

Inactive Publication Date: 2016-04-20
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the absorbing material absorbs and absorbs part of the electromagnetic waves emitted by the RFID reader, causing energy to be easily dissipated in the absorbing material, which is not well utilized by RFID tags (especially passive tag types)
Moreover, the setting of absorbing materials inevitably brings about high cost

Method used

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  • A radio frequency identification tag and a radio frequency identification system including the tag
  • A radio frequency identification tag and a radio frequency identification system including the tag
  • A radio frequency identification tag and a radio frequency identification system including the tag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] figure 1 Shown is a schematic structural diagram of the RFID tag provided according to the first embodiment of the present invention. In this embodiment, the tag 10 includes a substrate 20 , a tag chip 30 and an RFID tag antenna formed of metal (the pattern of the black part in the figure). The RFID tag antenna can be patterned and formed on the substrate 20 by printing, etching and other methods (as shown in the black part of the pattern), thereby forming a planar antenna; the tag chip 30 is placed at the feeding point 29 of the RFID tag antenna.

[0040] The RFID tag antenna has a centerline 28 and is generally symmetrical about the centerline 28 . For a clearer description, as attached figure 1 As shown, the direction where the centerline 28 is located is defined as the y direction (vertical direction), and the direction perpendicular to the centerline 28 is defined as the x direction (horizontal direction).

[0041] first to figure 1 The structure of the shown R...

Embodiment 2

[0057] figure 2 Shown is a schematic structural diagram of the RFID tag provided according to the second embodiment of the present invention. Such as figure 2 As shown, the RFID tag 10 also includes a substrate 20, a tag chip 30 and an RFID tag antenna placed on the substrate, and the tag chip 30 is placed at the feed point 29 of the tag antenna. The RFID tag antenna includes a first main radiator 21 , a second main radiator 27 , and two block-shaped third main radiators 22 . The first main radiator 21 and the second main radiator 27 are coaxially arranged on the center line 28; two block-shaped third main radiators 22 are arranged symmetrically about the center line 28; the first main radiator 21 and the second main radiator Between the two main radiators 27, the first straight feeder 25 is arranged, the first straight feeder 25 is coaxial with the central line 28, and the feed point 29 is located on the first straight feeder 25; the second main radiator 27 and the third ...

Embodiment 3

[0059] image 3 Shown is a schematic structural diagram of the RFID tag provided according to the third embodiment of the present invention. Such as image 3 As shown, the RFID tag 10 also includes a first main radiator 21 , a second main radiator 27 , and two block-shaped third main radiators 22 . The first main radiator 21 and the second main radiator 27 are coaxially arranged on the center line 28; two block-shaped third main radiators 22 are arranged symmetrically about the center line 28; the first main radiator 21 and the second main radiator Between the two main radiators 27, the first straight feeder 25 is arranged, the first straight feeder 25 is coaxial with the central line 28, and the feed point 29 is located on the first straight feeder 25; the second main radiator 27 and the third A second straight feeder 26 is arranged between the main radiators 22 ; the loading bar 23 is arranged on both sides of the first straight feeder 25 , and is arranged symmetrically wi...

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PUM

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Abstract

The invention discloses a radio frequency identification tag and a radio frequency identification system comprising the tag. The radio frequency identification system comprises one or more radio frequency identification tags. The radio frequency identification tag comprises a substrate, a tag antenna and a tag chip. The tag antenna and the tag chip are arranged on the substrate. The tag antenna is provided with a center line and is in axial symmetry about the center line. The tag antenna comprises a first main radiation body, a second main radiation body and third main radiation bodies. Both the first main radiation body and the second main radiation body are block-shaped and are arranged on the center line. The second main radiation body is correspondingly arranged under the first main radiation body. The two third main radiation bodies are block-shaped and are respectively arranged at two sides of the first main radiation body and are symmetry about the center line. The tag chip is arranged at a feed point. According to the system, the metal resistant property of the RFID tag can be realized, and the cost of the metal resistant RFID tag can be reduced.

Description

technical field [0001] The invention belongs to the technical field of radio frequency identification (Radio Frequency Identification, RFID), and relates to a radio frequency identification tag and a radio frequency identification system including the tag. Background technique [0002] RFID technology has been widely used in various fields, such as goods sales, transportation, production, waste management, postal tracking, air baggage management, vehicle toll management and other fields. Traditional paper barcodes cannot In the field of identification, it has been gradually replaced by the RFID system. [0003] An RFID system typically includes a plurality of RFID tags, at least one RFID reader having an antenna in communication with the RFID tags, and a computing device for controlling the RFID reader. Generally, an RFID tag consists of an RFID tag antenna and a tag chip; an RFID reader includes: a transmitter for providing energy or information to an RFID tag and for rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/077G06K7/00
Inventor 王彬张永生吕经纬
Owner HANGZHOU DIANZI UNIV