11.5X12-6-1182

Series:	1182
Part Status:	Active
Type:	Shielding Sheet
Shape:	--
Length:	12.000" (304.80mm)
Width:	11.500" (292.00mm)
Thickness - Overall:	0.004" (0.09mm)
Operating Temperature:	--
Adhesive:	Conductive, Double Sided
Material:	Copper Foil

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RFI and EMI - Shielding and Absorbing Materials

The 11.5X12-6-1182 application field and working principle focuses on the use of shielding and absorbing materials to contain electromagnetic interference (EMI) and radio frequency interference (RFI). This article will discuss the application fields, working principles, and advantages and disadvantages of shielding and absorbing materials.

Application Fields

The main application field of the 11.5X12-6-1182 EMI/RFI technology is shielding or absorbing materials. Shielding materials are designed to block or attenuate the passage of electromagnetic radiation or radio frequency waves. Commonly used shielding materials are metallized materials, including conductive fabrics, metallized polyester film and aluminum foil. These materials form physical barrier between the radiating source and the shielded device, and can reduce the interference that an electronic device may be subjected to from external environment.Absorbing materials, such as foam and fabricated absorbers are used to absorb the energy of the emitted EM fields and dissipate the energy as heat. Absorber materials absorb any EM energy through dielectric losses and convert it to heat energy, thus preventing the EM radiation from reflecting back to the source. These materials are usually embedded in printed circuit boards to reduce the amount of EM interference.

Working Principle

The basic working principle of shielding and absorbing materials is to reduce the effects of EMI and RFI by blocking, reflecting, and absorbing the energy. Shielding materials, with their conductive properties, reduce the unwanted interference from radiating both inwards and outwards from the source. The shield acts as an insulating boundary that blocks the EMI/RFI radiation and diverts it away from the sensitive electronic components. The effectiveness of the shield is determined by the material’s conductivity, the material’s thickness, and the flexibility of the shield material.Absorbing materials are designed to absorb the energy of the emitted EM fields and dissipate it as heat. The absorber material’s thickness and absorptive properties determine the level of shielding achieved. The absorber materials absorb any EM energy through dielectric losses and convert it to heat energy, thus preventing it from leaking back to the source.

Advantages and Disadvantages

The advantages of using shielding and absorbing materials is that they provide excellent protection against EMI/RFI interference in a variety of applications. The shielding and absorbing materials protect the sensitive electronics from damage caused by electrostatic fields and radio frequencies. In addition, they help reduce distortion and crosstalk in adjacent circuits and systems. The shielding and absorbing materials also eliminate the need for disposing of unused electrical energy and make it possible to electrical engineer equipment in compliance with EMC regulations. The disadvantages of the shielding and absorbing materials is that they are expensive and require special installation techniques and tools. In addition, the shielding materials can reflect the EM radiation back to the source, which can cause interference for other systems. The Absorbers can cause small dielectric losses, which can result in increased power consumption.

Conclusion

The 11.5X12-6-1182 EMI/RFI technology is a reliable and effective way of protecting electronic components from EMI/RFI interference. The use of shielding and absorbing materials provides excellent protection against EMI/RFI interference in a variety of applications while also allowing electrical engineers to design equipment in compliance with EMC regulations. While the materials are expensive, it is worth the investment to ensure the protection of electronic components from potential damage from electrostatic fields and radio frequencies.

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