Electromagnetic energy along the shield effect process is similar to the process of electromagnetic energy transmission along the line.
Shielding is equivalent to the process of transmission attenuation in the process of natural attenuation, shielding the reflection attenuation in the process of equivalent transmission process caused by the reflection attenuation of wave impedance mismatch.
Different places are the electromagnetic energy transmission along the shielded power line.
The direction of the energy is consistent with the wire transmission direction, and electromagnetic energy in the shield.
The direction of the energy and perpendicular to the direction of transmission of the wire through the medium-shield-medium in the direction of the radiation.
Electromagnetic energy, therefore, in addition to outside the shielding of the body to produce attenuation, in the medium to shield and shield to medium on the two borders will appear a lot of reflection attenuation.
During transmission, you must work hard to avoid the occurrence of attenuation, for shielding wants to have a larger reflection, one gets a larger shielding effect.
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