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Radio frequency identification tag

A technology of radio frequency identification tags and radiation components, which is applied in the field of radio frequency identification tags, can solve the problems of high manufacturing cost, complexity, and thick RFID tags, and achieve the effect of reducing manufacturing costs and simple structure

Inactive Publication Date: 2008-06-25
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, conventional RFID tags are thick and hard as described above, and there is a problem that it is difficult to stick them on curved surfaces.
[0008] In addition, in Patent Documents 1 and 2, the magnetic core material and magnetic core parts are sandwiched between coils, and the structure is a three-dimensional structure, which is relatively complicated, so there is a problem of high manufacturing cost.

Method used

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Embodiment Construction

[0036] Hereinafter, a first embodiment of the present invention will be specifically described with reference to the drawings.

[0037] Fig. 1 is a plan view of an RFID tag according to the first embodiment. As shown in the figure, the RFID tag is composed of an inverted F antenna 10 , an IC chip 20 and a film 30 . The inverted-F antenna 10 is a foil-shaped metal formed on the surface of the film 30 in a planar shape. In addition, in FIG. 1 , it is shown that this RFID tag is attached to, for example, a metal housing 40 of an electronic device.

[0038] The inverted-F antenna 10 is composed of a radiating element 11 , a shorting bar (matching circuit) 12 , a feeding part 13 and a ground plane 14 . Radiating element 11 is formed parallel to one side of ground plate 14 with the same length, one end is connected to power supply unit 13 , and the other end is open. Furthermore, a shorting bar 12 is provided between both ends of the radiation element 11 and is connected to a gro...

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PUM

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Abstract

A thin and flexible radio frequency identification tag which can perform communication even when it is bonded to a metal and can be produced inexpensively. A reverse F-shaped antenna (10) comprising a radiation element (11), a short pin (12), a feeding portion (13), and a ground plate (14) is formed planarly on the surface of a film (30). The film (30) is, for example, an insulating polyethylene terephthalate film, and is bonded to a metal housing (40) of an electronic apparatus such that the radiation element (11), the short pin (12), and the feeding portion (13) of the reverse F-shaped antenna (10) formed on the surface project from the metal housing (40).

Description

technical field [0001] The invention relates to a radio frequency identification label, in particular to a radio frequency identification label that can be pasted on metal. Background technique [0002] Non-contact tags such as RFID (Radio Frequency Identification) tags can read / write information through wireless communication, and can perform information management such as batch production management of products and history management of production processes. Therefore, it is expected to replace the bar code currently employed in product information management. [0003] In the past, frequencies such as 13.56MHz and 2.45GHz were used in RFID tags, but now the use of UHF (Ultra High Frequency) bands such as 953MHz has also been lifted. However, RFID tags cannot communicate if they are attached to metal objects (high conductivity objects) such as PC (Personal Computer) cases, instruments, and metal equipment. [0004] In addition, there are RFID tags that can communicate eve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38B42D15/10G06K19/00H01Q9/04
CPCH01Q9/0421G06K19/07749H01Q9/42H01Q1/38H01Q1/2266H01Q1/2225G06K19/07771
Inventor 山雅城尚志马庭透甲斐学
Owner FUJITSU LTD
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