| 摘要 |
System, methods and computer program product are provided for an adaptive control for adjusting the electromagnetic interrogation signal of an RFID transceiver where said signal is used to read and/or write to an RFID transponder (702) , or to adjust the gain of the RFID transceiver, or adjust both the gain and the signal strength. The system includes a RFID transceiver (708) having at least a transmitter portion and a receiver portion and capable of generating electromagnetic signals, a signal-to-noise ratio module (710) , and an adaptive control module (712) that adjusts the power of the electromagnetic signal of the transmitter portion or the gain of the receiver portion according to the signal-to-noise ratio of a first electromagnetic signal . In one embodiment the system may be employed in printer-encoder devices for reading or encoding RFID transponders during a printing process. |
