Can Nexperia NEH2000BY NEH2000BY harvesting energy from RF?

Hello Kundepuu, Welcome to the DigiKey TechForum.
The NEH2000BY chip is designed to harvest from a Photo-voltaic cell, and will charge a battery.
The datasheet also says The MPPT is designed to be independent of specific characteristics of the harvesters, therefore any harvester that fits the speification of the chip can be used.
I see it can harvest from 30uW to 2mW. I would think if the RF energy fits in the specifications, it should work. You should Check the Datasheet, to verify compatibility to your application.