I am trying to understand the RFID frequency bands but have some confusion. RFID tags operate on two different frequency bands 865 to 868 MHz (European) & 902-928 MHz. Are the RFID readers programmed to interrogate the tag at one single frequency e.g., 915 MHz or over the entire band ( 902-928 MHz?)
I have seen tag reading performance graphs over UHF range and the tag responds at all frequencies of course with varying read range. In this context does it make sense to compare the performance (read range) of different tags at a central frequency e.g. 865 MHz or 915 MHz?
If it's better to compare the read range of the tags over a range of frequencies (e.g. 902-928 MHz,) how would you conclude the best overall performance over the entire range? Can you simply average the read range at each frequency in the band?