一种电子设备与物体活动状态传感方法，此电子设备包括信号产生模块、非对称式天线模块以及信号分析模块。信号产生模块用以产生脉冲宽度调制信号，根据脉冲宽度调制信号产生具有脉冲(pulse)过冲(overshoot)及下冲(downshoot)的量测信号，并根据量测信号产生参考信号。非对称式天线模块包括发射天线与接收天线。发射天线用以发射量测信号至一物体。接收天线用以接收经由此物体反射的量测信号。信号分析模块用以接收并处理参考信号与由物体反射的量测信号，而获得物体活动状态信号。

An electronic device and a method for sensing active state of object are provided, the electronic device includes a signal generating module, a non-symmetric antenna module and a signal analyzing module. The signal generating module is configured to generate a pulse width modulation signal, generate a measuring signal with overshoot and downshoot pulse according to the pulse width modulation signal, and generate a reference signal according to the measuring signal. The non-symmetric antenna module includes a transmitting antenna and a receiving antenna. The transmitting antenna is configured to transmit the measuring signal to an object. The receiving antenna is configured to receiving the measuring signal reflected by the object. The signal analyzing module is configured to receive and process the reference signal and the measuring signal reflected by the object, so as to obtain an object active state signal.