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

Claim 0:
1. A signal isolation and transmission device, comprising: a high-frequency amplitude modulation circuit, a signal demodulation circuit, a first H-field antenna and a second H-field antenna;
the first H-field antenna and second H-field antenna are both loop antennas with an external conductive shielding layer, and an insulating layer is wrapped outside the conductive shielding layer; and annular parts of the first H-field antenna and second H-field antenna face each other and abut each other;
the high-frequency amplitude modulation circuit is connected with a first pin of the first H-field antenna, and a second pin of the second H-field antenna is connected with the signal demodulation circuit; and
when the high-frequency amplitude modulation circuit is connected with a device to be tested, the high-frequency amplitude modulation circuit receives a signal to be tested output by the device to be tested, modulates the signal to be tested onto a high-frequency carrier signal to obtain a first high-frequency modulation signal, and transmits the first high-frequency modulation signal to the first H-field antenna, the first H-field antenna converts the first high-frequency modulation signal into a magnetic signal, and then the magnetic signal is transmitted to the second H-field antenna through magnetic field coupling, the second H-field antenna converts the magnetic signal into a second high-frequency modulation signal and transmits the second high-frequency modulation signal to the signal demodulation circuit, and the signal demodulation circuit restores a demodulated signal proportional to the signal to be tested according to the second high-frequency modulation signal.