Atmel’s ATA8520D is a transceiver IC for 868MHz Sigfox proprietary networks, intended to be used for IoT and machine-to-machine comms with the Sigfox protocol. It has an RF front end for up and down-link , a digital baseband and a microcontroller in the same device. The transmit path uses a closed loop fractional-N modulator, while …
Read full article: Sigfox chip integrates transmitter and receiver