20S-CBSA-0.75X1.5X0.2

Series:	20-CBS
Part Status:	Active
Type:	Shield, 2-Piece
Height - Overall:	0.200" (5.08mm)
Length - Overall:	1.500" (38.10mm)
Width - Overall:	0.750" (19.05mm)
Ventilation:	Non-Vented
Mounting Type:	Surface Mount

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RF Shields: A Comprehensive Overview

Radio frequency (RF) shields, also known as RF cages or enclosures, are designed with the purpose of absorbing, deflecting, or reflecting RF energy in order to reduce or eliminate radio noise. RF shields are becoming increasingly important in today’s world as the use and reliance on radio waves in various applications continues to grow. In the following sections, we will discuss the different types of RF shields, their applications, and the working principles behind them.

Types of RF Shields

There are a number of different types of RF shields available, depending on the particular application and amount of attenuation desired. The most common types of RF shields include absorptive RF shields, deflective RF shields, and reflective RF shields.

Absorptive RF Shields

Absorptive RF shields are designed to absorb radio energy. These shields are typically made from materials such as felt, foam, or fiberglass and are often backed with metal foil so that they can absorb and retain the energy. Absorptive shields are most effective at reducing radio noise in small enclosures, such as when used to line the walls of electronic equipment.

Deflective RF Shields

Deflective RF shields are designed to deflect or block radio energy. These shields are typically constructed from metals such as aluminum, brass, or copper and are usually lined with a shielding material such as copper tape or fiberglass to aid in blocking the energy. Deflective shielding is especially effective for enclosures that are large in size, such as broadcast towers or aircraft.

Reflective RF Shields

Reflective RF shields are designed to reflect radio energy away from sensitive equipment or areas. These shields are typically made of highly-reflective materials such as aluminum foil, and are often backed with a lightweight but rigid material such as cardboard or plastic. Reflective shields are typically used in applications that require low levels of attenuation, such as in communication and defense systems.

20S-CBSA-0.75X1.5X0.2 Application Field and Working Principle

The 20S-CBSA-0.75X1.5X0.2 RF shield is a shield specifically designed to shield against low-frequency RF interference within a 20-meter radius. It is a deflective RF shield, constructed out of aluminum and lined with a shielding material such as copper tape or fiberglass to absorb and deflect low-frequency RF noise. The shield is designed to be mounted onto a wall or roof and is an effective solution for homes, offices, and other public places that are subject to RF interference. The shield works by deflecting incoming RF noise away from the protected area, protecting it from interference and allowing for clearer communication signals.

Conclusion

RF shields are essential for effective communication and to protect electronic equipment from interfering radio waves. There are several types of RF shields, each of which is designed to absorb, deflect, or reflect radio energy. The 20S-CBSA-0.75X1.5X0.2 RF shield is a deflective shield specifically designed for low-frequency RF noise and is an effective solution for protecting against interference in homes, offices, and other public places.

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