RFI Shielding Manufacturers and Companies

IQS Directory provides an extensive list of rfi shielding manufacturers and suppliers. Utilize our website to review and source rfi shielding manufactures with our easy-to-use features which allow you to locate rfi shielding companies that will design, engineer, and manufacturer rfi shielding for your exact specifications. Our request for quote forms make it easy to connect with leading rfi shielding manufacturers. View company profiles, website links, locations, phone number, product videos, customer reviews, product specific news articles and other production information. We are a leading manufacturer directory who will connect you with the right manufacturers whether you are looking for emf shields, emi rfi shielding, or rfi suppression.

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ARTICLES AND PRESS RELEASES

  • Design Considerations when using Expanded Metal Foils For Shielding Commercial Electronics

    RFI Shielding By: Eric Toro, Dexmet Marketing Specialist, Dexmet Corporation As electronic components become decreasingly smaller in size, engineers are forced with having to compress designs to include more electronics per circuit board surface area. As microelectronic components become closer together, the need for enhanced EMI/RFI shielding that can not only attenuate the EMI/RFI radiation but also provide essential ventilation to dissipate the buildup of heat. Utilizing an engineered expanded metal foil with an open area that meets the application requirements can provide the solution to both these challenging problems....

  • Board Shielding Customization

    RFI Shielding EMI shielding products come in a variety of shapes and use a variety of materials to protect delicate machine equipment from EMI radiation and feedback. EMI shielding manufacturers create shielding in slot mount shape, conductive elastomers, microwave absorbers, fabric over foam shields, and board level EMI shielding products for protecting equipment inside other machines or equipment. Board shielding is necessary to protect delicate computer and other machine components from EMI feedback. These shields look like little metal boxes that fit over equipment. Depending on the use for the...

  • How to select the proper magnetic shielding material

    RFI Shielding by Josh Wickler - Marketing and Sales Coordinator, Magnetic Shield Corp MATERIAL SELECTION Start with our hands on magnetic shielding Lab Kit to evaluate various materials and thicknesses. Using the variety of sample materials, you can measure and compare the resulting field strength to your initial results (field mapping). We offer three common shielding alloys to choose from. By design, each type of shielding alloy will attract magnetic flux lines of the interfering field to its self and divert the unwanted field away from sensitive areas or components....

  • MuMetal Then and Now

    RFI Shielding Everyone's heard of telegraphs and telegraph wires. Most people are familiar with Morse Code and how it revolutionized communication across long distance. Some people are likely to know that telegraph cables were submerged and laid across the floor of the Atlantic Ocean between the Americas and Europe. But almost no one could tell you what was used to prevent the signals passed through that cable from becoming distorted. Throughout the course of the story of transatlantic cable's development, a number of tools were used to mitigate the signal...

  • Meet Magnetic Shields

    RFI Shielding Magnetic shields contain magnetic interference from within or isolate interference from without. This is the simplest definition of the roles that magnetic shields play. Of course, this definition is insufficiently descriptive to give anyone a meaningful understanding of what magnetic shields do and how they do it. While a truly thorough understanding of the topic would have to involve a crash course in the subjects of electrostatics, magnetostatics and electrodynamics, it is possible to achieve functional electromagnetism-literacy by observing a few facts. It's important to remember that magnetic...

  • Understanding RFI Shielding and the Universe

    Before they begin their careers as electrical engineers, and probably even as early college students, designers of complex electronic devices are expected to develop a thorough understanding of the concepts of electricity, electromagnetism and all other related concepts within electrodynamics. They have to internalize it, really. As mundane as these internalized concepts may become for people to whom they seem so obvious, they remain important and useful. The limits of something like radio frequency interference's implications for industry are beyond anyone's vision. Understanding and taking advantage of radio waves has...

Industry Information

RFI Shielding

RFI shielding is a method of protection against any electromagnetic disturbance that is emitted from either an electrical circuit or electronic component that may interfere with the operation of other electrical circuits or components. Radio frequency interference, or RFI, is radiated electromagnetic “noise,” which travels through the air as radio waves.

RFI is identical to EMI, or electromagnetic interference, except that EMI is conducted along wires, electrical circuits and conductors, while radio frequency interference (RFI) travels across “free” air space in the form of radio waves. Electromagnetic interference and radio frequency interference are the magnetic fields which are given off as a bi-product of electrical currents, and both EMI and RFI impede the normal flow of electricity through currents, causing interference and malfunction in electronic devices. Radio frequency interference is high frequency, typically 100 kilohertz or above; RF shielding is especially designed to block these high frequencies with copper, aluminum, galvanized steel, conductive rubber, plastic or EMI coating paints. RFI can be shielded by EMI enclosures, EMI coatings and EMI gaskets. It should be noted that not all of these block ground-conducted electromagnetic interference; EMI enclosures, gaskets and EMI coated enclosures aim to block out RFI signals traveling through the air and are not nearly as effective in trying to block conducted EMI.

EMI and RFI are created, by widely varying degrees, by everything which conducts electrical energy, including electrical wires, electrical appliances, computers and all electronic equipment. Signal-bearing electronic devices such as mobile phones, laptops and GPS devices give off RFI. Normal electrical currents are disrupted when moderate to high levels of EMI or RFI are introduced; un-channeled electromagnetic signals and radio frequency waves can act as “noise”, magnetically altering normal flow of electrical currents and impeding the flow of electrical energy. Products such as EMI enclosures, EMI coated interiors and EMI gaskets are necessary to provide full protection from RFI, which continues to increase exponentially as more and more mobile electronic devices are introduced to the consumer market. However, even through RFI products can be used, RFI sprays are the most common form of RFI shielding. An RFI spray, or coating, is often composed of an acrylic base in addition to pure metals such as silver, copper or nickel. Some common applications of RFI shielding include packaging of electronic devices such as printed circuit boards (PCBs), cable assemblies, interconnects and input output filters. Industries that commonly require RFI shielding products include medical, telecommunications, electronics and military.

RFI Shielding
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