Patent ID: 11881639
Assignee: SHENZHEN ZHIYONG ELECTRONICS CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 9:
10. The signal isolation and transmission device of claim 7, wherein the signal demodulation circuit comprises:
a first high-pass filter, a RF amplifier, a second high-pass filter, a detector, a low-pass filter and a second operational amplifier;
an input end of the first high-pass filter is used as an input end of the signal demodulation circuit, and an output end is connected with an input end of the RF amplifier;
an output end of the RF amplifier is connected with an input end of the second high-pass filter;
an output end of the second high-pass filter is connected with an input end of the detector;
an output end of the detector is connected with an input end of the low-pass filter;
an output end of the low-pass filter is connected with a non-inverting input end of the second operational amplifier;
an inverting input end of the second operational amplifier is connected with a second bias voltage, and an output end is used as an output end of the signal demodulation circuit.