RF systems, rf communication, rf communication system, micro rf transmitter

 NT3H2111 Series 3.6 V 13.56 MHz Surface Mount RFID Transponder - XQFN-8

https://www.futureelectronics.com/p/semiconductors--wireless-rf--rf-modules-solutions--rfid/nt3h2111w0fhkh-nxp-8126208