Hi!

Actually, the efficiency of the rectifier defines the amount of the DC power delivered to the load. From this point of view, the efficiency of the rectifier does have influence on the operative range of the tag. After all, the electronics of the tag have a minimum power requirement, not a minimum voltage requirement.

For example, assume that we can achieve the desired DC voltage levels at a certain distance (of e.g. 80cm). However, the output power of the rectifier (which is defined by the efficiency of the rectifier) may not be sufficient to provide the load with the desired current levels.

I hope that I gave you a clearer view of the situation!

Thanks,
Nikos