| 摘要 |
A radio frequency identification (RFID) transponder is provided. The RFID transponder includes an LC resonant circuit having a first high frequency (HF) terminal and a second HF terminal, producing an AC signal, and transmitting a data; a full-wave rectifying circuit having a high voltage terminal, a low voltage terminal, a first terminal electrically connected to the first HF terminal, and a second terminal electrically connected to the second HF terminal, and rectifying the AC signal to a DC signal; and a first data modulating circuit having a third and a fourth terminals respectively electrically connected to the low voltage terminal and the second HF terminal, wherein the first data modulating circuit is coupled to a part of the full-wave rectifying circuit so that the transponder respectively transmits the data and is charged when the AC signal is respectively a negative AC signal and a positive AC signal.
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