2.4 GHz wake-up receiver with suppressed substrate noise coupling

. 2 A 2 GHz 52 μ W Wake - Up Receiver with - 72 dBm

A wake-up receiver (WuRx) is used in wireless sensor networks (WSN) to detect wireless traffic directed to a node’s receiver and activate it upon detection, improving network latency and energy dissipation by maximizing data transceiver sleep time. The always-on nature of the WuRx sets a power dissipation floor for the entire system. In realistic WSN scenarios, the adoption of a WuRx leads to e...

A 0.015-mm2 60-GHz reconfigurable wake-up receiver by reusing multi-stage LNAs

A 0.015-mm 60-GHz Reconfigurable Wake-Up Receiver by Reusing Multi-Stage LNAs

An area-efficient 60-GHz wake-up receiver (WuRx) using reconfiguration techniques of multistage low-noise amplifiers (LNAs) is presented. The gain stages of the 60-GHz LNA are reused as the envelope detectors for the wake-up receiver. Therefore, the bulky components such as extra switches between the wake-up receiver and the LNA, additional antennas, and excess input matching network can be rem...

Wake-Up-Receiver Concepts - Capabilities and Limitations

A promising idea for optimising the power consumption of mobile communication devices represents the usage of an additional ultra-low-power receiver unit, which is able to control the main transceiver in order to reduce the standby power consumption of the overall system. Such a Wake-Up-Receiver (WuRx) unit senses the medium and switches on the communication interfaces in case of an external re...

Wake-Up Receiver with Equal-Gain Antenna Diversity †

Small scale fading signals resulting from multipath propagation can cause signal strength variations in the range of several dB. Resulting from the fluctuating signal strengths, the wake-up packet reception rate can decrease significantly. Using antenna diversity can greatly mitigate these effects. This article presents a novel wireless sensor node with wake-up receiver that uses an equal-gain ...