RFID tag
First Claim
Patent Images
1. An RFID tag comprising:
- a transmitting and receiving antenna formed on a substrate;
a detecting block having a pattern formed on the substrate in a circumference of the antenna and operable to detect breakdown of the pattern of the detecting block on the substrate; and
an electronic component connected to the antenna and the detecting block;
wherein the detecting block is formed of a conductive material and loops of two lines, and has a length of a non-integer multiple of a half-wavelength of an operating frequency of the RFID tag, in order to not change a transmitting distance regardless of discommunication of the loops.
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Accused Products
Abstract
With the RFID comprising a transmitting and receiving antenna, a detecting block formed in the circumference of the antenna, and an electronic component connected to the antenna and detecting block to detect breakdown of the detecting block, illegal use can be prevented, matching between the tag antenna and IC chip can also be attained with inclusion of the detecting means, and higher radiation and receiving characteristics of antenna can also be obtained without deterioration of antenna gain. Moreover, the RFID is very effective for keeping security because illegal use of the RFID tag through re-adhesion thereof to an item can be prevented.
8 Citations
12 Claims
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1. An RFID tag comprising:
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a transmitting and receiving antenna formed on a substrate; a detecting block having a pattern formed on the substrate in a circumference of the antenna and operable to detect breakdown of the pattern of the detecting block on the substrate; and an electronic component connected to the antenna and the detecting block; wherein the detecting block is formed of a conductive material and loops of two lines, and has a length of a non-integer multiple of a half-wavelength of an operating frequency of the RFID tag, in order to not change a transmitting distance regardless of discommunication of the loops. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An RFID tag comprising:
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a transmitting and receiving antenna; a detecting block having a pattern formed around the antenna; an electronic component connected to the antenna and detecting block operable to detect breakdown of the pattern of the detecting block; a first film mounting the antenna, detecting block, and electronic component; a second film covering the antenna, detecting block, and electronic component; and a wall block provided at an external side to surround a part of the detecting block between the first film and the second film and is bonded only to the second film; wherein the detecting block is formed of a conductive material and loops of two lines, and has a length of a non-integer multiple of a half-wavelength of an operating frequency of the RFID tag, in order to not change a transmitting distance regardless of discommunication of the loops. - View Dependent Claims (8, 9, 10, 11)
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12. An RFID tag comprising:
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a transmitting and receiving antenna; a detecting block having a pattern formed around the antenna; an electronic component connected to the antenna and the detecting block operable to detect breakdown of the pattern of the detecting block; and a substrate for mounting the antenna, detecting block, and electronic component; wherein the detecting block is formed of a conductive material and loops of two lines, and has a length of a non-integer multiple of a half-wavelength of an operating frequency of the RFID tag, in order to not change a transmitting distance regardless of discommunication of the loops.
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Specification