  Spatial and contextual awareness has the potential to revolutionize sensor
nodes, enabling spatially augmented data collection and location-based
services. With its high bandwidth, superior energy efficiency, and precise
time-of-flight measurements, ultra-wideband (UWB) technology emerges as an
ideal solution for such devices.
  This paper presents an evaluation and comparison of a non-coherent UWB
transceiver within the context of highly energy-constrained wireless sensing
nodes and pervasive Internet of Things (IoT) devices. Experimental results
highlight the unique properties of UWB transceivers, showcasing efficient data
transfer ranging from 2 kbit/s to 7.2 Mbit/s while reaching an energy
consumption of 0.29 nJ/bit and 1.39 nJ/bit for transmitting and receiving,
respectively. Notably, a ranging accuracy of up to +/-25 cm can be achieved.
Moreover, the peak power consumption of the UWB transceiver is with 6.7 mW in
TX and 23 mW in RX significantly lower than that of other commercial UWB
transceivers.
