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    • 2. 发明授权
    • RF SIM card, card reader, and communication method
    • RF SIM卡,读卡器和通讯方式
    • US08630584B2
    • 2014-01-14
    • US13011125
    • 2011-01-21
    • Yunbo YuAimin ShenShan ZhuLi OuyangMeixiang LiWeixi Luo
    • Yunbo YuAimin ShenShan ZhuLi OuyangMeixiang LiWeixi Luo
    • H04B5/00
    • H04M1/7253
    • A radio frequency (RF) device includes an RF transceiver, an RF antenna, and a magnetic signal detector. The RF is selected to be in the very high frequency (VHF), ultrahigh frequency (UHF), or super high frequency (SHF) bands such that the shielding effect is reduced and the RF device can be configured as a SIM card disposed inside a cellular phone with an increased RF communication range. The magnetic signal detector is used to sense a magnetic field signal from an RF reader, which includes an RF transceiver, an RF antenna, and a magnetic signal transmitter. The longer communication range afforded by the VHF, UHF, or SHF bands is reduced by the sensing of the magnetic field, thereby providing a communication range control, while the RF device and the RF reader exchange information through the RF channel with improved security as a result of the range control.
    • 射频(RF)装置包括RF收发器,RF天线和磁信号检测器。 选择RF处于非常高频(VHF),超高频(UHF)或超高频(SHF)频带中,使得屏蔽效果降低,并且RF设备可被配置为设置在 手机具有增加的RF通信范围。 磁信号检测器用于感测来自RF读取器的磁场信号,RF读取器包括RF收发器,RF天线和磁信号发射器。 VHF,UHF或SHF频带提供的更长的通信范围通过感测磁场而减少,从而提供通信范围控制,而RF设备和RF读取器通过RF信道交换信息,具有改进的安全性作为 范围控制的结果。