| 摘要 |
A transponder detector is provided with capabilities for detecting the 5 presence and type of a transponder in its read range while operating at low power and also using a common antenna for detecting and executing data transactions with transponders. TRANSPONDER IC TRANSPONDER 12a 1312 1) READER ANTENNA READER 14 ASSEMBLY EXCITER/READER (ER) CIRCUIT WAKEUP UNIT 31 32 1 -40 EXCITATION TRANSPONDER DETECTION SIGNAL SIGNAL SIGNAL GENERATOR CIRCUIT GENERATOR RECEIVER CIRCUIT CIRCUIT (42 RESPONSE SIGNAL 24 RECEIVER CIRCUIT MAIN CONTROLLER -- 49 (4 POWER WAKEUP* MANAGEMENT CONTROLLER APPLICATION 48- - DC I/O INTERFACE T r 30 POWER SU PPLY |
