A 10.525G radar sensor with configurable power modes, with a typical power consumption of about 27mA, and in low power mode, the power consumption can be as low as approximately 55uA. The module size is 1 mm*1 mm. The sensor uses the radar sensing chip AT10LP1T1RDB, which fully integrates the 10.525GHz microwave circuit, intermediate frequency amplification circuit, and signal processor. It has high integration and good manufacturing consistency. Paired with a miniaturized planar antenna, it ensures sensor performance while significantly reducing the overall size.