55-CBSA-1.0X1.0X0.5

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RF shields can be divided into active and passive categories. Passive ones are protective devices that look like metal cages and rely on their obstructive nature to block and absorb electromagnetic waves. Active shields, on the other hand, use built-in electronics that act in a complementary way to improve reception and attenuate external signals. The 55-CBSA-1.0X1.0X0.5 is an active shield designed for a variety of applications.

The shield protects equipment from potentially damaging electromagnetic interference (EMI) from both external, or near-field sources and far-field signal sources. This enclosure is designed to be used in indoor RF shielded room applications where equipment and systems have to be isolated from any external or internal RF interference. It is designed to provide a complete Faraday cage which completely covers the equipment and systems, providing up to 50 dB EMI rejection (depending on the frequency range). It also helps to reduce the overall RF noise level in the enclosure and ensures that electromagnetic emissions remain below the specified criteria.

The 55-CBSA-1.0X1.0X0.5 active shield is mostly used in applications such as RF testing, antenna development, spectrometry, RF diagnostics, and general instrumentation. It is also frequently used in sensitive environments, such as in critical laboratories, medical facilities, military installations, and radio production. This type of shield has an excellent shielding effectiveness, making it ideal for high-precision applications that require reliable protection from external EM interference.

The working principle of the 55-CBSA-1.0X1.0X0.5 active shield is based on the principle of Faraday cage – also known as the electromagnetic cage. In its simplest form, a Faraday cage consists of an enclosure made from metal wires or sheets with an opening at the top that allows the entry and exit of the equipment inside the enclosure. The metal wires or sheets are connected together to form a complete loop. This complete loop enables the electricity that originates on the inside of the cage to be conducted through the entire surface of the structure. This creates a barrier which prevents the entry or exit of EM waves.

The 54-CBSA-1.0X1.0X0.5 active shield offers excellent shielding effectiveness because of its unique combination of four layers of electro-magnetic shielding material. The first two layers are the inner cable and an EMI shielded Mylar sheet. The third layer is an outer clad metallic shell that wraps around the mylar sheet and provides additional shielding. The final layer is the outer steel (mesh) shield, which is welded on to the outer clad to provide the most complete shield. The combination of these four layers provides up to 50 dB of shielding effectiveness for the entire enclosure.

In addition to providing excellent EMI shielding, the 54-CBSA-1.0X1.0X0.5 active shield is also designed to ensure signal integrity. It has a double-action solder which provides electrical connections between the inner cable and the outer cladding, as well as between the outer cladding and the top lid. This ensures that the Faraday cage structure remains intact and that the equipment located inside the cage will not suffer from any attenuation or disruption due to external EM sources.

Overall, the 55-CBSA-1.0X1.0X0.5 active shield is an excellent solution for a variety of applications where protection from external EM interference is necessary. Its shielding effectiveness and signal integrity make it ideal for use in medical facilities, military installations, RF testing, antenna development, and instrumentation purposes.

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