I am designing a RFID reader with using ADF9010. However, based on the applications diagram in the ADF9010 datasheet, it seems that there is a PA module needed to amplify the RF signal. I have two questions.
1. Understand that the transmit signal power is either -3dBm or 3dBm for ADF9010, is this power enough for to drive most of the passive RFID tags?
2. If a PA module is really needed, what should I consider when designing the PA module? (like the gain of the power amplifier...)