The WuR is a specialized radio that is used to wake up an IoT device from a low-power sleep state. It consumes much less power than the main radio of the device and is designed to detect a specific wake-up signal. Once this signal is detected, the WuR sends a wake-up signal to the main radio, which then activates the device. By using a WuR, an IoT device can remain in a low-power sleep state for extended periods, conserving battery life and improving energy efficiency. The design and implementation of a low-power wake-up radio for energy-efficient IoT applications involve several key components and challenges. By minimizing power consumption, optimizing the wake-up signal, and reducing interference, a WuR can improve the energy efficiency and lifespan of IoT devices

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