There are generally two ways of electromagnetic interference propagation: conduction coupling and radiation coupling. Any occurrence of electromagnetic interference inevitably involves the transmission and transmission channels (or channels) of interference energy. It is generally believed that there are two ways to transmit electromagnetic interference: one is through conductive transmission; Another method is radiation transmission. Therefore, from the perspective of the interfered sensors, interference coupling can be divided into two categories: conduction coupling and radiation coupling. Conduction transmission must have a complete circuit connection between the interference source and the sensor, and the interference signal is transmitted to the sensor along this connection circuit to cause interference. This transmission circuit can include wires, conductive components of equipment, power supply, common impedance, grounding plates, resistors, inductors, capacitors, and mutual inductance components
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