20-CBSA-4.75X6.0X0.2

Series:	20-CBS
Part Status:	Active
Type:	Shield, 2-Piece
Height - Overall:	0.200" (5.08mm)
Length - Overall:	6.000" (152.40mm)
Width - Overall:	4.750" (120.65mm)
Ventilation:	Non-Vented
Mounting Type:	Surface Mount

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RF Shields and their Applications

RF shields are a type of shielding device used to prevent interference from high frequency radio waves in sensitive electronic components. They are designed to work in an enclosed environment by blocking or reflecting away radio waves before they could interfere with connected or adjacent components. RF shields can vary in size and form depending on the application they are used for, ranging from large enclosures with large openings to small discrete devices.One such type of RF shield is the 20-CBSA-4.75X6.0X0.2. This is a relatively small shielding device consisting of a non-metallic case which encloses the component which is to be protected from the interference of radio frequencies. The device utilises a conductive material such as copper or copper-clad steel to ensure maximum electromagnetic radiation shielding effectiveness. The shielding cases also feature a magnetic shielding layer which helps to provide further protection, while an additional dielectric insulation layer helps to reduce any capacitive coupling between connected components.The 20-CBSA-4.75X6.0X0.2RF shield is primarily used in the telecommunications industry, for applications such as optical fibre systems, mobile phone base stations, RF circuits, and other systems which make use of frequencies in the range of 0.1 to 10GHz. It provides very effective shielding from both radiated and conducted interference, often exceeding the requirements of many industry standards. In the case of optical fibre systems, the shield helps to ensure the integrity of the entire system by preventing the generated radio frequencies from interfering with neighbouring systems, as well as preventing cross-talk between connected systems.The working principle of the 20-CBSA-4.75X6.0X0.2RF shield is relatively simple. The shield works by preventing unwanted electromagnetic radiation from entering or leaving the shielded enclosure, through the use of a metallic mesh material which has a high transmissivity characteristic. This mesh material is electroplated onto the enclosure, and is designed to absorb and reflect electromagnetic radiation by coupling any electric signals which pass through it. This absorption and reflection of electrical signals prevents the unwanted radio emissions from entering the enclosure, and thus provides the desired shielding effect.In addition to providing effective shielding from unwanted electromagnetic radiation, the 20-CBSA-4.75X6.0X0.2 RF shields also offer excellent attenuation capabilities, and are designed to provide up to -55dB of electromagnetic radiation attenuation. This allows the shield to significantly reduce any interference or cross-talk which may be caused by other electromagnetic radiation sources which operate at the same frequency as the systems which are protected.Overall, the 20-CBSA-4.75X6.0X0.2 RF shield is a great choice for most telecommunications systems which need to operate in the presence of high levels of electromagnetic radiation. It provides an effective means of controlling and preventing interference from unwanted radio frequencies, and its highly efficient shielding and attenuation capabilities make it the ideal choice for a wide range of applications.

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