| 摘要 |
PROBLEM TO BE SOLVED: To make adjustable the inductance even after an antenna coil is formed. SOLUTION: In the non-contact IC card, an electronic circuit part 2 on which at least an IC chip is mounted and an antenna coil 3 connected to the electronic circuit part 2 are formed on a substrate 1. In the antenna coil 3, plural inductance control circuit parts 7 having different lengths are formed in at least one corner part of the inner peripheral side, at least one of inductance control circuit parts 7 is conducted and the remaining inductance control circuit parts 7 are disconnected. |
