There are many kinds of frequency used in RFID system, range from tens of thousand Hz to tens of Giga Hz. 13.56M Hz, belong to HF frequency range, is widely applied, because it has the property of un-substitute.

• 射频识别系统使用的工作频率很广；从几十千赫兹到几十吉赫兹；而属于HF频段的13.；56MHz由于其不可替代性得到了广泛的应用。