公开(公告)号：US10355687B2

公开(公告)日：2019-07-16

申请号：US15354488

申请日：2016-11-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhen Cao ,  Yunfeng Liu ,  Yanzhong Zhang

IPC: G01R19/00 ,  H03K5/19 ,  H03K17/567 ,  H03B28/00 ,  H03K4/08 ,  H03K7/08 ,  G01R31/02 ,  H03K17/0812 ,  H03K17/12 ,  H03K17/16 ,  H03K17/18 ,  G01R31/44

Abstract: A wave loss detection circuit includes: an anode of the diode receives a first drive signal, and a cathode of the diode is connected to a first end of the first resistor; a second end of the first resistor is connected to a first end of the first energy storage unit, a first end of the second resistor, and a first input end of the comparison unit; a second end of the first energy storage unit and a second end of the second resistor are connected to a ground level, and a resistance of the first resistor is less than a resistance of the second resistor; a second input end of the comparison unit is configured to receive a threshold voltage, and if a voltage signal received by the first input end is less than the threshold voltage, which indicates that a wave loss occurs in the first drive signal.