Digital Back-end Based on a Low-power Listening Protocol for Wake-Up Receivers

An ultra-low-power digital baseband (DBB), based on a low power microcontroller (MCU), is presented. The DBB functions as a decoder for the Wake-up receiver (WuRx). It also implements a duty-cycle protocol meant to control the WuRx peripherals to further reduce its average energy consumption. The DBB generates very short power-on periods, during which, it has to detect the presence of a wake-up packet. This allows very low latency between a transmitted wake-up packet and its detection. The WuRx’s power consumption and data rate are scalable and can be reconfigured to meet specific requirements. It emphasizes the possibility to decode more than 512-bit address pattern.

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