Electromagnetic compatibility (EMC) refers to the ability of a device or system to operate in its electromagnetic environment in accordance with requirements without causing unbearable electromagnetic interference to any device in its environment. Therefore, EMC includes two requirements: on the one hand, it refers to the requirement that the electromagnetic interference generated by the equipment to the environment during normal operation cannot exceed a certain limit; On the other hand, it refers to the device having a certain degree of immunity to electromagnetic interference present in the environment, namely electromagnetic sensitivity. Electromagnetic compatibility refers to the normal working ability of various electrical or electronic devices in a complex electromagnetic environment in a common space, meeting design requirements with specified safety factors. Also known as electromagnetic compatibility. Its meaning includes: ① mutual consideration between electronic systems or devices in electromagnetic environments; ② Electronic systems or devices can operate normally according to design requirements in the electromagnetic environment of nature. If the impact of electromagnetic fields on the ecological environment is further extended, the subject of electromagnetic compatibility can also be referred to as environmental electromagnetics. The research on electromagnetic compatibility is gradually developing with the needs of electronic technology towards high-frequency, high-speed, high-precision, high reliability, high sensitivity, high-density (miniaturization, large-scale integration), high-power, small signal applications, complexity, and other aspects. Especially with the widespread use of modern electronic technology in artificial Earth satellites, missiles, computers, communication equipment, and submarines, the issue of electromagnetic compatibility has become more prominent
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