Patent ID: 8025238
Filing Date: 2011-09-27
Classification: G06K

Abstract:
1. A built-in RFID tire tag, comprising: an antenna mounted in a tire, and configured to be operated by resonating with radio waves, which are transmitted from an RFID reader and to have a repetitive corrugated shape; and a circuit unit configured to be operated by being supplied with power using the radio waves; wherein the antenna comprises a pair of tag radiators, which are arranged on a basis of the circuit unit, each of the tag radiators being divided into a first region and a second region, a corrugation density of the second regions, which are close to the circuit unit, is greater than that of the first regions, which are not close to the circuit unit, and the first regions, which depend on rotational motion of the tire, adapt flexibly to bending and torsion of the tire by a difference between the corrugation densities.