NONCONTACT COMMUNICATION MEDIUM, MAGNETIC TAPE CARTRIDGE, AND MANUFACTURING METHOD OF NONCONTACT COMMUNICATION MEDIUM

A noncontact communication medium includes a processing circuit mounted on a substrate having a coil to induce power by action of an external magnetic field applied from an outside, and processing circuit having an internal capacitor; and an external capacitor externally attached to the processing circuit. The external capacitor, the internal capacitor, and the coil constitute a resonance circuit resonating at a predetermined resonance frequency by the action of the external magnetic field. The external capacitor is connected in parallel with the internal capacitor, and the resonance circuit has a Q-value determined in accordance with a characteristic of the external capacitor.