| 摘要 |
<p>A radio-frequency identification (RFID) tag comprises a substrate, a microchip mounted to the substrate, a coupling coil in the form of one turn of wire printed on the substrate or etched from an electrically conductive material and terminated by two terminal ends connected to the microchip, and coil antenna, self-resonating at the operative frequency of the tag, mounted on top of the coupling coil so as to be inductively coupled thereto. According to a further embodiment, the coupling coil is in the form of a two turn wire wherein the chip is connected is further connected at a middle point between the two terminal ends. This second tag arrangement allows achieving a power transfer identical to a Graetz bridge with only two diodes.</p> |
