Inspection method of RFID tag
First Claim
1. An inspection method of an RFID tag for inspecting an RFID tag having an antenna communicating using communication frequency of a UHF band, and a matching circuit adjusting impedance of the antenna:
- wherein an antenna coil of a reader-writer is opposed to the matching circuit, and a control circuit of the RFID tag is operated by magnetic flux transmitted from the antenna coil, so that the RFID tag is inspected.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for inspecting a communication condition of an RFID tag that is readable in a noncontact manner using an electromagnetic wave is provided, in which when a communication condition of the RFID tag is inspected, it can be inspected without needing an electromagnetic-wave shield device for preventing diffusion of the electromagnetic wave. When an RFID tag having an antenna communicating using communication frequency of a UHF band, and a matching circuit adjusting impedance of the antenna, is inspected an antenna coil of a reader-writer is opposed to the matching circuit, and a control circuit of the RFID tag is operated by magnetic flux transmitted from the antenna coil, so that the RFID tag is inspected.
22 Citations
13 Claims
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1. An inspection method of an RFID tag for inspecting an RFID tag having an antenna communicating using communication frequency of a UHF band, and a matching circuit adjusting impedance of the antenna:
wherein an antenna coil of a reader-writer is opposed to the matching circuit, and a control circuit of the RFID tag is operated by magnetic flux transmitted from the antenna coil, so that the RFID tag is inspected. - View Dependent Claims (2, 3)
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4. Inspection apparatus of an RFID tag for inspecting an RFID tag having an antenna communicating using communication frequency of a UHF band, and a matching circuit adjusting impedance of the antenna:
wherein an antenna coil is provided, the coil being opposed to the matching circuit and transmitting magnetic flux. - View Dependent Claims (5, 6)
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7. A communication method of an RFID tag for communication with an RFID tag having an antenna communicating using communication frequency of a UHF band, and a matching circuit adjusting impedance of the antenna:
wherein an antenna coil of a reader-writer is opposed to the matching circuit, and communication with a control circuit of the RFID tag is performed by magnetic flux transmitted from the antenna coil. - View Dependent Claims (8, 9, 13)
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10. Communication apparatus of an RFID tag for communication with an RFID tag having an antenna communicating using communication frequency of a UHF band, and a matching circuit adjusting impedance of the antenna:
wherein an antenna coil that transmits magnetic flux is provided oppositely to the matching circuit. - View Dependent Claims (11, 12)
Specification