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RFID tag, RFID tag set and RFID system

A technology of RFID tags and components, applied in the field of RFID tags, can solve problems such as difficult to cover, difficult to achieve high gain, difficult to cover the frequency of use of RFID tags, etc., to achieve the effect of realizing broadband and high gain

Active Publication Date: 2011-08-03
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this inverted L-shaped antenna is used, the frequency band will be wider than that of the patch antenna, but it is difficult to cover the usage frequency of RFID tags in various countries in the world, that is, it is difficult to cover all frequencies from 860MHz (EU: European Union) to 955MHz (JP: Japan) Frequency, and compared with patch antennas, there is a problem that it is difficult to achieve high gain

Method used

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  • RFID tag, RFID tag set and RFID system
  • RFID tag, RFID tag set and RFID system
  • RFID tag, RFID tag set and RFID system

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Experimental program
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no. 2 approach

[0042] In the RFID tag 1A according to the second embodiment, the position of the via hole 7 of the RFID tag 1 according to the first embodiment is moved to the second antenna conductor portion 4B side, and connected to the ground conductor plate 2 through the via hole 7. RFID tags. Other configurations are the same as those of the RFID tag 1 .

no. 3 approach

[0044] In the RFID tag 1B according to the third embodiment, unlike the RFID tag 1 according to the first embodiment, the antenna part 4 and the ground conductor plate 2 are not connected through the via hole 7, but the first antenna is formed by bending. One end 40A- 1 of the conductor portion 40A is connected to the first antenna conductor portion 40A and the ground conductor plate 2 . Such a structure can be realized by the following processing. For example, one conductor plate is bent into an angle shape ("U" shape). At this time, the first dielectric substrate 3 is rolled inside. In this state, the upper surface side of the first dielectric substrate 3 is etched to form the first antenna conductor portion 40A and the second antenna conductor portion 4B. In addition, when so constituted, it can be as Figure 4 Mounting holes 8 for mounting the RFID tag 1B on the metal object M are formed at the four corners of the RFID tag 1B in that way.

no. 4 approach to no. 6 approach

[0046] If the structures of the RFID tags of the fourth to sixth embodiments are simplified, the RFID tags 1C and 1D according to the fourth and fifth embodiments are obtained by further processing the shape of the antenna part 4 of the RFID tag 1. Yes, the RFID tag 1E according to the fifth embodiment is obtained by further processing the shape of the ground conductor plate 2 of the RFID tag 1 . In addition, since it is only necessary to know these differences, in Figure 5 to Figure 7 is briefly illustrated.

[0047] Specifically, the RFID tag 1C is different from the above-mentioned RFID tag 1 in that, in the RFID tag 1C, the shape of the second antenna conductor portion is formed into Figure 5 The shown meander-shaped second antenna conductor portion 40B. On the other hand, the difference between the structure of the RFID tag 1D and the above-mentioned RFID tag 1 is that in the RFID tag 1D, a Figure 6 The U-shaped second antenna conductor portion 400B is formed by fol...

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Abstract

Provided is an RFID tag by which the communication distance is not shortened even when wireless communication is performed with a metal object and broadband and high gain are achieved. An RFID tag set and an RFID system are also provided. In an RFID tag (1), an antenna section (4) is arranged on a first dielectric substrate (3), a grounding conductive plate (2) is arranged between the first dielectric substrate (3) and a second dielectric substrate (5), and the electrical length of the antenna section and that of the grounding conductive plate are set different from each other.

Description

technical field [0001] The invention relates to an RFID tag, an RFID tag component and an RFID system, in particular to an RFID tag, an RFID tag component and an RFID system which are suitable for attaching to metal objects for wireless communication. Background technique [0002] Conventionally, an RFID (Radio Frequency Identification: radio frequency identification) system has been used in order to improve the efficiency of physical distribution management, product management, and the like. This RFID system is composed of an RFID tag having an IC chip, and a reader or reader / writer that communicates wirelessly with the RFID tag. This RFID tag is installed on various objects and applied, but the communication distance will often change due to the influence of the installation object. Especially, if the installation object is a metal surface, the communication distance will be significantly reduced. [0003] In addition, when RFID tags are attached to all articles for arti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/24G06K19/07G06K19/077H01Q1/38H01Q5/01H01Q9/16H01Q9/42H04B1/59H04B5/02H01Q5/10H04B5/48
CPCH01Q9/16H01Q5/0017H01Q1/48H01Q1/2208H01Q5/00G06K19/07749G06K19/07771H01Q9/42H01Q5/25
Inventor 野上英克
Owner ORMON CORP
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