Mobile phone motherboard shielding cover, the principle and function of the shielding cover when using + silk-like stamping accuracy

The mobile phone mainboard shielding cover, the function of the shielding cover is to shield the influence of external electromagnetic waves on the internal circuit and the electromagnetic waves generated inside to radiate outwards. The following Xiaoshuo takes everyone to understand the principle of the shielding cover: 1. When the electromagnetic wave reaches the surface of the shielding body, it reflects the incident wave due to the discontinuity of impedance at the interface between air and metal. This kind of reflection does not require the shielding material to have a certain thickness, only the discontinuity at the interface; 2. The energy that is not reflected off the surface and enters the shielding body is attenuated by the shielding material as it propagates forward in the body . The so-called absorption; 3. When the remaining energy that has not been attenuated in the shield is transmitted to the other surface of the material, it will be reflected again when it encounters the discontinuous interface of metal-air impedance and will return to the shield again. This kind of reflection may have multiple reflections at the interface of two metals. In short, the electromagnetic attenuation of electromagnetic shielding body is mainly based on the reflection and absorption of electromagnetic waves. Hardware, 15 years of focusing on mobile phone motherboard shielding cover, 20,000+ sets of mold custom processing and production experience, monthly processing of 100+ sets of molds, daily production capacity of 3 million punches, stamping accuracy up to 0.01mm, and 16 quality inspections. It can quickly solve time-critical problems for you, solve stamping accuracy problems, and solve mass production quality problems. Choose, choose rest assured!