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RF Shields

A RF shield, also known as a Radiated Emissions Shield, is a device used to reduce magnetic or electric field levels produced by electro-magnetic radiation. It functions as an enclosure to prevent unwanted magnetic and electric fields from leaving or entering a space that houses sensitive electronic components. RF shields come in a variety of shapes and sizes that are specifically designed for different applications.

At KEMET, we’ve designed and developed 44-CBSA-1.0x6.0x0.4, a low-frequency emission shield that works through attenuating the electromagnetic interference energy by physical structure. The shield is made of an aluminum material that is highly resistant to magnetic and electric fields. It can be used for a wide variety of applications, including medical, automotive, and industrial equipment.

The shield\'s working principle can be generalized by the following law:

Electromagnetic interference shielding efficiency = Reflective Attenuation + Absorptive Attenuation + Absorptive Attenuation.

The three parts all serve a purpose in increasing or decreasing the amount of energy that escapes from the shield. First, reflective attenuation is the portion of the shield that reflects the electromagnetic interference energy away from its source. This is often made of aluminum and other such materials with high reflective properties. Second, absorptive attenuation occurs when the shield absorbs the electromagnetic interference energy. This is usually done through materials such as sponge or foam. Finally, dissipative attenuation happens when the shield dissipates the electromagnetic interference energy by diffusing it over a large area.

44-CBSA-1.0x6.0x0.4 works through all three attenuation principles at the same time. For example, the shield reflects the external electromagnetic interference energy away from the sensitive electronic components housed inside the shield. The materials used in the shield, such as sponge or foam, absorb the interference energy. Finally, the shield dissipates the interference energy over a large area in order to suppress the signal strength of the interference wave. All of these technologies work together to provide maximum shielding efficiency and reduce the amount of electromagnetic interference reaching sensitive electronic components.

In conclusion, 44-CBSA-1.0x6.0x0.4, is a low-frequency emission shield designed for use in a variety of applications to reduce magnetic and electric fields. It is made of highly resistance aluminum material and works by reflecting, absorbing, and dissipating the electromagnetic interference energy in order to protect sensitive electronic components. With its efficient performance and reliable shielding, 44-CBSA-1.0x6.0x0.4 is the perfect solution for any application requiring a high level of electromagnetic shielding.

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