Low Power Wake-Up Receiver With Unique Node Addressing

Power consumption and battery life are of critical importance for medical implant devices. For this reason, devices being designed for Wireless Body Area Network (WBAN) applications must consume very little power. To conserve power, most devices can be turned off or put to sleep when not in use. However, a WBAN transceiver must be listening at all times, or listen at predetermined intervals for incoming transmissions. This paper proposes a wake-up circuit topology, where an ultra-low power receiver listens for a wake up signal identifying the target node, and wakes up the primary receiver only when that node is called upon. Therefore, when a wake up signal is transmitted to the nodes on a network, our wake-up receiver allows all the nodes on a network except the targeted node to remain asleep to save power.