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US 2006/0232419 A1Published application
RFID tag and antenna arranging method
AssigneeFujitsu Limited
InventorsTakeshi Tomioka, Takanao Ochiai
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Abstract
A non-contact integrated circuit (IC) tag accepts a plurality of frequency bands and provides sufficient performance in a compact size by freely arranging a plurality of antennas therein such that the antennas occupy a minimum area and by preventing interference between the antennas with an insulator.
Claims22
An radio frequency identification (RFID) tag including a plurality of antennas, the RFID tag comprising:
- an interference prevention unit that prevents interference between the antennas.
A method, comprising:
- arranging a plurality of antennas in an RFID tag;
- and
- providing an insulator between the antennas to prevent interference between the antennas.
A method, comprising:
- arranging a plurality of antennas in an RFID tag;
- and
- coating at least one of the antennas with a material that transmits electromagnetic waves of a frequency band to be transmitted and received by the corresponding antenna, to prevent interference between the antennas.
An apparatus, comprising:
- one or more integrated circuits (IC) to read/write data;
- two or more antennas each accepting different electromagnetic spectrum frequency bands and communicably contacting the at least one IC;
- a medium on which the one or more ICs and the two or more antennas are superposed;
- and
- one or more insulators between and/or among the antennas to prevent electromagnetic interference between and/or among the antennas.
2 more elements
Dependencies are inferred from the claim text.