3M AB5050 CIRCLE-1.5"-100

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When dealing with shielding of RF (Radio Frequency) and EMI (Electromagnetic Interference) generated noise, 3M AB5050 CIRCLE-1.5"-100 provides an effective method for tackling interference and radio wave absorption. This unique circular patch attenuator has been specifically designed to be applied to a variety of surfaces and is suitable for both indoor and outdoor uses. In this article, we will be looking at the application fields and the working principles of 3M AB5050 CIRCLE-1.5"-100.

3M AB5050 CIRCLE-1.5"-100 shielding and absorbing materials are applied in two distinct fields to reduce interference and radio wave absorption, namely outside and inside applications. In a typical outside application, the oxide-filled foam or polyurethane material used in the patch attenuator is found to be a highly effective material for absorbing and deflecting the RF signals away from the source, while the lightweight aluminum backing provides excellent shielding from total electromagnetic radiation. In an indoor setting, the patch absorbs radiated RF energy in order to control and suppress EMI noise. This ability to absorb radiated RF energy reduces undesired electromagnetic interference which can ultimately result in decreased signal noise within the designated area.

The primary method of operation for this type of absorptive material is through the use of wave absorbance - a process by which the patch attenuates the magnitude of the incident wave, resulting in a reduced signal. This absorbance is aided by the foam used in the attenuator, which creates a progressively decreasing environment for RF waves, due to its ability to store energy and absorb incident RF waves. This decrease in wave magnitude is further accentuated by the patch’s lightweight aluminum backing, which provides an excellent hard surface for deflection of the remaining RF energy.

When considering the physics behind RF wave absorption, it is important to note that a great majority of the incident wave’s energy is not completely absorbed by the patch but is instead deflected. This deflection produces a beneficial effect in that it reduces the level of RF energy in the vicinity, thus dramatically reducing the amount of interference and the potential for signal noise. The 3M AB5050 CIRCLE-1.5"-100 patch attenuator’s wave absorbance techniques thus provide an effective solution for outside and indoor applications, in which RF and EMI generated noise must be controlled and suppressed.

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