RFID tag and manufacturing method thereof
First Claim
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1. A tag having a tag antenna and an LSI chip, comprising:
- a power-supply pattern (63) on which the LSI chip (64) is mounted;
a patch antenna (62) that functions as the tag antenna and does not have a DC connection to the power-supply pattern; and
a high-frequency connection section (62a) that makes the patch antenna couple to the power-supply pattern electromagnetically, whereinthe power-supply pattern, the patch antenna and the high-frequency connection section are formed on a surface of a double-sided print board (61), andthe power-supply pattern comprises a loop pattern and high-frequency connection section (62a) is formed by forming a shallow cutout section at a side end section of the patch antenna, and wherein only a part of the loop pattern is located in the cutout section.
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Abstract
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.
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Citations
1 Claim
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1. A tag having a tag antenna and an LSI chip, comprising:
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a power-supply pattern (63) on which the LSI chip (64) is mounted; a patch antenna (62) that functions as the tag antenna and does not have a DC connection to the power-supply pattern; and a high-frequency connection section (62a) that makes the patch antenna couple to the power-supply pattern electromagnetically, wherein the power-supply pattern, the patch antenna and the high-frequency connection section are formed on a surface of a double-sided print board (61), and the power-supply pattern comprises a loop pattern and high-frequency connection section (62a) is formed by forming a shallow cutout section at a side end section of the patch antenna, and wherein only a part of the loop pattern is located in the cutout section.
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Specification