Of a wireless communication system, an RF tag which can operate normally even when a communication distance is extremely short, like the case where the RF tag is in contact with a readerwriter, whereby the reliability is improved. Limiting the heat shrinkage factor and the thickness of the PP films, the position of deposited electrodes, and the rate of the peeled area of the deposited electrodes to a certain range provides a metallized film capacitor having improved dieletric strength, tan \u03b4, and charge-discharge characteristics. Each of the first to Nth groups of the logical gates includes an AND gate and a NOR gate.