40-CBSA-1.75X3.5X0.4

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RF Shields, with the code “40-CBSA-1.75X3.5X0.4”, are three-dimensional enclosure shields to protect housed electronics from potentially harmful radio frequency fields. These shields offer maximum attenuation of radio frequency interference and feature low losses and a high level of effectiveness lower than 24GHz. 

Applications in which RF Shields are used include a variety of mission-critical industries including medical, military, automotive, communication, cleanroom and robotics.  They are an ideal choice for applications that work within the range of 24GHz and lower, and they are often used in conjunction with other types of shielding, such as thermal shielding and RFI shielding.

The most common application of RF Shields is to protect and block sensitive electronic components, testing devices, and other onboard systems from powerful electromagnetic fields.  RF Shields are designed to provide consistent, reliable coverage for a range of products, from analogue to digital, and high-frequency to low-frequency. With a suitable combination of materials and construction, these shields can provide effective protection to a wide range of components and systems.

The working principle behind RF Shields is two-pronged – one is to provide physical protection from electromagnetic radiation by restraining RF waves. Typically, a shield encloses the equipment and reduces its exposure to external EM radiation. The second part is the use of wave filtering between the shielding layers. This function is provided by the use of high-quality laminates and materials that offer optimum RF absorption and scattering. Inside the enclosure, either ferromagnetic particles or a combination of iron oxide and ferrite, along with a non-conductive substrate, are used to filter the EM radiation.

The shielding performance of RF shields depends on the type of shielding material used, the design of the shielding enclosure, and the electromagnetic environment in the vicinity of the equipment. The shielding material is usually either a combination of metals such as copper, aluminum, or iron, or other materials such as plastics, carbon, or fabric.

The design of the enclosure affects the shielding performance. If the enclosure is too small, it will allow more leakage of RF radiation. Likewise, if the enclosure is too large, the radiation will be blocked more completely. It is important to have the correct enclosure design for the application at hand, as different shapes and sizes will affect the shielding performance differently.

The electromagnetic environment also plays a role in the shielding performance of RF shields. Nearby radio transmitters, amplifiers, antennas, and other objects may emit RF radiation. It is important to ensure that the RF shields are installed and used correctly to ensure they will provide the desired level of protection.

RF Shields offer an effective, cost-efficient, and robust solution to lowering and controlling the risk and effects of radio frequency interference. They are invaluable for protecting the integrity and performance of critical electronic devices, and for reducing the impact of external RF radiation on personnel and the environment.

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