| 摘要 |
PURPOSE: An interactive PCD(Proximity Coupling Device) and an SIM(Subscriber Identification Module) are provided to insert an active RF(Radio Frequency) SIM to an SIM/USIM slot and use the same as a non-contact card, thereby stably performing communication in a constant communication section range without interference or obstacles. CONSTITUTION: An inner loop antenna is prepared on a plastic card and detects carriers which are transmitted from a PCD. A PICC(Proximity Integrated Circuits Card)(7-10) is connected to the inner loop antenna and is operated by electromotive force. A carrier detector(7-6) compares the electromotive force with reference voltage. When the electromotive force is larger than the reference voltage, an active trigger switch(7-7) applies operation power to the PICC. An oscillator generates the carriers. |
