| 摘要 |
Wireless communications between a vehicle base station and a transponder are effected. In accordance with one or more example embodiments, a modulation circuit and a first capacitor electrode are used to establish a capacitive electric field between the first capacitor electrode and another capacitor electrode, the respective electrodes and space therebetween (e.g., air) forming a capacitor. A pulsed wake-up signal is communicated between a base station and a remote transponder via the electric field, to activate a circuit in the remote transponder. A wake-up response signal (i.e., generated in response to the wake-up signal) is communicated between the remote transponder and the base station over a wireless channel. An authentication signal is then communicated between the base station and the remote transponder, via the electric field, in response to the wake-up response signal. An authentication response signal is then communicated between the remote transponder and the base station over a wireless channel. |
