Imec and Holst Centre have developed a novel phase-tracking receiver bringing further power and cost reduction for the next generations of Bluetooth and IEEE802.15.4 radio chips.   The ultra-low power digital-style receiver is 3x smaller than the current state-of-the-art. It supports supply voltages as low as 0.85V and consumes less than 1.6mW peak. An innovative low power antenna impedance detection technique enhances radio performance, especially for wearables or implantable applications.  ...