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US 12,307,313 B2Granted
IC tag
AssigneeNitta Corporation
InventorsToshiharu Shimai, Hirofumi Tsujimoto
Life of this patent
Estimating the term…
Abstract
An IC tag according to the present invention includes: an IC chip (2); a dipole antenna (3) for electrically transmitting and receiving information stored in the IC chip (2); and a sheet-shaped substrate (1) that supports the IC chip (2) and the dipole antenna (3). In this IC tag, 0.1≤R/L≤2.5 is satisfied, where R is a resistance value between two ends (S1, S2) of the dipole antenna (3) and L is a length of a path that connects the two ends (S1, S2) of the dipole antenna (3) while extending along the dipole antenna (3) without passing through the IC chip (2).
Claims7
An IC tag comprising:
- an IC chip;
- a dipole antenna for electrically transmitting and receiving information stored in the IC chip, said dipole antenna being continuous at the IC chip;
- and
- a sheet-shaped substrate that supports the IC chip and the dipole antenna,
- wherein the dipole antenna includes:
- an impedance matching portion disposed at the IC chip location;
- and
- a pair of dipole portions extending from the impedance matching portion,
- wherein 0.1≤R/L(Ω/cm)≤2.5 is satisfied, where R is a resistance value between two ends of the dipole antenna and L is a length of a path that connects the two ends of the dipole antenna while extending along the dipole antenna without passing through the IC chip.
6 more elements
Dependencies are inferred from the claim text.