49-CBSA-2.5X3.5X0.4

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RF Shields are devices used to contain and control electromagnetic interference (EMI) generated by electronic devices and systems. 49-CBSA-2.5X3.5X0.4 is a type of RF Shield designed for use in electronic and communication applications. In this article, a brief overview of its application field and working principles will be provided.

Application Field

49-CBSA-2.5X3.5X0.4 is a cylindrical can type RF shield made of sheet steel material. Its outer surface is shielded with a combination of 1.6 mm thick steel along with 0.14 mm thick copper. It is designed to provide the highest level of shielding for any RF shielded enclosure. Its uses span a wide range of industries and applications, such as radar and microwave interference protection, shielded enclosures for communications equipment, use in medical applications, and so on.

The cylindrical can type of shield offers superior performance as compared to the box-type shields. In terms of shielding efficiency, the cylindrical can provides 100 dB shielding effectiveness between 30 MHz to 8 GHz, and 100 dB shielding effectiveness between 8 GHz to 18 GHz. It is designed to be lightweight and robust, with a maximum diameter of 2.5 \'\' and a height of 3.5 \'\'. Additionally, its low insertion loss structure up to 18 GHz also makes it ideal for high frequency applications.

Working Principle

The 49-CBSA-2.5X3.5X0.4 RF shield follows a conventional EMI shielding architecture. It is designed with an inner and outer conductive layer, which are separated by an insulating layer known as the Faraday gap. The inner conductive layer is made up of a 2.5 x 3.5-inch, 0.4 mm thick steel sheet. This layer is designed to absorb most of the incident radiation and reduce the penetration of RF fields. The outer layer is made up of 1.6 mm thick steel and 0.14 mm thick copper, enclosed together in a cylindrical form. This layer serves to provide an additional layer of shielding, blocking more RF from entering.

Apart from the layers of shielding, this shield also has a closed entry port, which serves to further reduce the ability of any RF interference to enter the enclosure. Additionally, this shield is designed with tight tolerances, which helps ensure that any gaps or seams are closed, and that the shield continues to perform its function of containing EMI properly.

Conclusion

The 49-CBSA-2.5X3.5X0.4 is an RF Shield designed to provide a superior level of shielding for any RF shielded enclosure. It is a cylindrically shaped shield made up of two layers of shielding. Its inner and outer layers are made up of copper and steel respectively, and its Faraday gap acts as an insulator layer between them. Its 100 dB shielding effectiveness and low insertion loss up to 18 GHz makes it ideal for applications requiring high frequency accuracy. This shield also has a closed entry port and is designed with tight tolerances to further ensure its effectiveness.

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