A communication device can include a receiver frontend and a wake-up receiver (WUR) frontend. The receiver frontend can have a radio frequency (RF) interface configured to couple to an antenna and a baseband interface configured to couple to a baseband component. The WUR frontend can be selectively coupled to the receiver frontend (e.g. between the RF interface and the baseband interface). The WUR frontend may monitor a communication channel and control the receiver frontend to adjust its operating mode (e.g. waking the receiver frontend from a sleep mode) based on the monitoring. The WUR frontend may have a lower power consumption than the receiver frontend. The WUR frontend and the receiver frontend may share the same impedance matching network and/or the RF interface.