"Contactless Communication Medium, Antenna Pattern Placed Medium, Communication Apparatus, And Antenna Adjusting Method"

Abstract: A contactless communication medium includes a base made of an insulating material, an antenna coil section including a conductor wound in a planar shape on the base, an inductance adjusting conductor pattern that is connected in parallel to a part of the conductor in the antenna coil section, and is placed on the ba,se, a capacitor connected to the antenna coil section, and a communication processing section that is connected to the antenna coil section and the capacitor to perform contactless communication processing.

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