Rfid Antenna Switching And Polling Sequence - Access OCR640 Operational Description

Fig 7: RFID antenna switching and polling sequence
Once a passport is detected the RFID reader exchanges data with it and stays locked on to the RFID
passport. As long as the passport stays in the communicable range, the antenna switching/polling does
not happen.
It should be noted that the reader always does transceive operation. (i.e. Transmits command and
receives or expects reception of data from the RFID passport). Hence, it is NOT possible to have the
reader in transmit only or receive only mode.