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从电磁兼容的基本理论出发,详细阐述了电磁干扰的三要素:电磁干扰源、耦合路径、接收器。同时指明了电磁耦合的路径:传导耦合、电场耦合、磁场耦合和电磁场耦合。基于电磁干扰的三要素,详细说明了在移动电话设计中如何应用电磁兼容性(EMC)设计的原则和方法,以消除或减少电磁干扰。文章以一款GSM移动电话的设计为例,通过性能指标的验证阐明电磁兼容性(EMC)的具体应用。
Starting from the basic theory of electromagnetic compatibility, three elements of electromagnetic interference are elaborated: source of electromagnetic interference, coupling path and receiver. Also pointed out the path of electromagnetic coupling: conductive coupling, electric field coupling, magnetic field coupling and electromagnetic field coupling. Based on the three elements of electromagnetic interference, the principles and methods of how to apply electromagnetic compatibility (EMC) design in mobile phone design are described in detail to eliminate or reduce electromagnetic interference. The article takes the design of a GSM mobile phone as an example to demonstrate the specific application of electromagnetic compatibility (EMC) through the verification of performance indicators.