Arvind Sundararajan

TL;DR: An 802.15.4 compatible transceiver that operates without any off-chip frequency reference, with integrated Cortex-M0, that can also transmit BLE beacons with only three external connections.

TL;DR: It is shown that the proposed mechanisms for crystal-free radios to be able to track an IEEE802.15.4-compliant join proxy and maintain the requested radio frequency stability of ±40ppm, even when subject to temperature variation of 2° C / min.

TL;DR: Most physical-layer specifications defined by low-power RF communication standards IEEE 802.15.4 and Blue-tooth Low-Energy can be satisfied by relaxation oscillators with the exception of RF carrier accuracy.

TL;DR: The variation in performance of a 6TÍSCH network implemented using OpenWSN is discussed by measuring end-to-end packet latency — the time between an event trigger signaling the transmitter node's microprocessor to create a packet, and the packet reception on the receiving node — with 0.5 millisecond accuracy.

TL;DR: This work proposes a network referenced frequency lock loop and demonstrates a one sigma mean frequency accuracy of 47 p/min, post calibration, and extends this concept to calibrate the on-chip RF local oscillator by exploiting the network time synchronization for frequency calibration.