How Good is Knitted Wire Mesh for RFI Shielding

With changing RFI shielding requirements, new technologies are continuously showing better ways of protection from radio interference. Knitted wire me...

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With changing RFI shielding requirements, new technologies are continuously showing better ways of protection from radio interference. Knitted wire mesh is one of the many RFI blocking choices available to the users. However, the real questions is, whether this option is better than the others. These mesh wire designs use different types of metal filaments to weave the structure just like stockings or sweaters. Its interlocked design is developed by weaving a continuous strand of the filament and is capable of offering high level of RFI/EMI shielding services. However, general information is not nearly enough to make purchase decisions. You need to have an in-depth knowledge. Here are a few things you need to know.

Why Select Knitted Wire Mesh?

Unlike other shielding products, knitted wire mesh is designed with interlocking loop, which makes it easier to stretch its structure. In an industrial setting, using a flexible product for RFI shielding pays off. Plus, this particular material can be designed using Monel, TCS (Tinned Copper-clad Steel), Aluminum and Stainless Steel. This means users have the option of selecting the right metal to get satisfactory performance level. For example, you can use TCS to get moderate to low performance level. This shielding material can come in rectangular, double-round-with-fin, round, and round-with-fin design variations. This gives you the liberty to choose the product that is appropriate for a job at hand.

Mechanical Characteristic of Knitted Wire Mesh

Adaptability to compression is one of the best features of this shielding product. Thanks to its loop-structure that  serves as springs when subjected to compressive stress. The upside of using this product is resilience. It doesn’t show signs of damage when stretched far beyond its general capability. Plus, removing the pressure returns the mesh to its original shape. Its non-linear spring design makes it the best tool to manage shock and omit resonance. One of the other mechanical traits of wire mesh shielding design is to reduce the surface resistance to micro-ohm-centimeter level. And, this feature adds to its capability of blocking RFI signals from and to your sensitive devices.

If you are using a gasket, wire mesh can increase its internal connectivity as well. Wire mesh products can be applied through spot welding, groove mounting, soldering, gluing, and riveting. All these options make it very easy for the user and the experts to find a suitable choice. Its mechanical traits also include high temperature work capability, which opens up an array of work fields where you can use it.

Tips While Using with Shielding Gaskets

These products can deliver the best results when working around fixed panel mating surfaces. Although wire mesh can offer high performance RFI shielding facilities, you still need to focus on environmental sealing to extend its lifespan. Compressing your wire mesh gasket by 20 to 25 percent can increase its performance level. Make sure that your wire mesh gasket is not over-compressed. You can use fitting slots to keep the gasket in one place or use adhesive. If you are using gaskets-with-fin (single or double), keep the fin attached by using the metal strip or glue. Focusing on installation is important to assure successful operation while using wire mesh shielding gaskets. Select the right material for wire mesh shielding by measuring its mesh density, wire diameter, and mesh profile to get high attenuation RFI blocking benefits. Its customizable density, reliability, maintenance-free work feature and high temperature work efficiency make it the best choice for RFI shielding.

There is little doubt about the efficiency of wire mesh as an effective RFI shielding choice for different products. Discuss the benefits with your shielding solution provider to see if this choice is suitable for the designs you have in mind.