摘要:
An RFID tag having a tag antenna and an LSI chip, comprising: a power-supply pattern on which the LSI chip is mounted; a patch antenna that functions as the tag antenna; and a high-frequency connection section that makes a high-frequency connection between the power-supply pattern and the patch antenna. The high-frequency connection section is formed, for example, by forming a slot in the patch antenna, layering one end of a small dipole antenna that functions as the power-supply pattern over the slot so that it crosses over the slot, and supplying power from the small dipole antenna to the patch antenna.
摘要:
An RFID tag having a tag antenna and an LSI chip, comprising: a power-supply pattern on which the LSI chip is mounted; a patch antenna that functions as the tag antenna; and a high-frequency connection section that makes a high-frequency connection between the power-supply pattern and the patch antenna. The high-frequency connection section is formed, for example, by forming a slot in the patch antenna, layering one end of a small dipole antenna that functions as the power-supply pattern over the slot so that it crosses over the slot, and supplying power from the small dipole antenna to the patch antenna.
摘要:
A meander line antenna formed by folding a conductive pattern of a folded dipole antenna in the shape of meander is disclosed. The basic structure of the meander line antenna includes a bottom half section formed by a folded conductive pattern, and a feeding point arranged approximately at the center of the folded conductive pattern for mounting an IC chip, a top half section consisting of a folded conductive pattern shaped like the bottom half section, a coarse tuning section consisting of two or more short circuit conductive patterns for coarse tuning that connects countering conductive patterns of either or both of the bottom half section and the top half section at a predetermined interval, and a fine-tuning section consisting of two or more short circuit conductive patterns for fine tuning that connect countering conductive patterns of the top half section, the countering conductive patterns being located at a position that counters the feeding point, at a predetermined interval.
摘要:
The present invention relates to an RFID tag and is provided with a function of detecting peeling while maintaining a good antenna characteristic. A first conductive pattern includes two extending sections extending from an IC chip, each end of which is connected to the IC chip, and a correction pattern for antenna characteristic correction which bypasses the IC chip and connects the two extending sections, and a peeling detection pattern is formed in an area enclosed by the two extending sections and the correction pattern.
摘要:
The present invention relates to an RFID tag and is provided with a function of detecting peeling while maintaining a good antenna characteristic. A first conductive pattern includes two extending sections extending from an IC chip, each end of which is connected to the IC chip, and a correction pattern for antenna characteristic correction which bypasses the IC chip and connects the two extending sections, and a peeling detection pattern is formed in an area enclosed by the two extending sections and the correction pattern.
摘要:
An RFID tag includes a dielectric member, an antenna pattern formed on and around a surface of the dielectric member, and an IC chip that is electrically connected to the antenna pattern by means of two chip pads.
摘要:
A tag patch antenna includes: a slit formed in the vicinity of an edge of an antenna pattern along a part of the edge; and a feeding point to which a tag LSI is connected and which is formed by cutting an intermediate portion of the part of the edge separated by the slit from a body of the antenna pattern by a width of the slit.
摘要:
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.
摘要:
An RFID tag is constructed by pasting a first component and second component together. The first component includes a tabular first base made of dielectric and a metal layer covering one of the front and back of the first base. The second component includes a sheet-like second base, a metal pattern provided on the second base and electrically connected to the metal layer of the first component to constitute a communication antenna, a circuit chip connected to the metal pattern which carries out a radio communication through the communication antenna, and an adhesive material layer which bonds the second base to the other of the front and back of the first base. The metal layer of the first component and the metal pattern of the second component are electrically connected by the conductive component.
摘要:
An RFID tag is constructed by pasting a first component and second component together. The first component includes a tabular first base made of dielectric and a metal layer covering one of the front and back of the first base. The second component includes a sheet-like second base, a metal pattern provided on the second base and electrically connected to the metal layer of the first component to constitute a communication antenna, a circuit chip connected to the metal pattern which carries out a radio communication through the communication antenna, and an adhesive material layer which bonds the second base to the other of the front and back of the first base. The metal layer of the first component and the metal pattern of the second component are electrically connected by the conductive component.