I am relatively new to this field, and please understand if my question seems ridiculous.
As far as I know, the passive RFID tag is supposed to harvest energy from radio waves emitted from other devices. The radio waves are electromagnetic signals. The passive RFID tag has a coiled antenna that also serves as a filter, which selects signals of a certain range of frequencies (for example, from 13.46 to 13.66 MHz)
This is where my question rises. Even after filtering the signal received, the filtered signal may contain noises. I am guessing that power source does not have to be as sensitive as data communication between two devices. However, even so, I wonder if having noises in a signal doesn't have any effect on its role as a power source. Thank you.