The performances of two RF transmitters, monolithically integrated with their antennas\non a single CMOS microchip fabricated in a standard 0.35 microm process, are presented. The usage\nof these architectures in the Internet of Things (IoT) paradigm is envisioned, as part of a custom\nconceived data transmission system. The implemented circuits use two different directly onâ??off\nkeying (OOK) modulated oscillator topologies whose outputs are employed to feed two loop antennas.\nThe powering of both transmitters is duty-cycled for reducing the average power consumption to a\nfew tenths of a microwatt, allowing the usage as low-power transmitters for IoT nodes. The integrated\nloop antennas radiate sufficient power for a few metersâ?? communication range. The OOK transmitted\nsignal can be easily detected using a commercial receiver.
Loading....