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Monthly Archives: May 2015

  • Staying Shielded

    It seems like every day there’s a new ‘must have’ gadget or product on the market, whether it be the latest tablet, contactless payment cards or smart watches. As we become increasingly reliant on these devices to manage our lives, both at home and in the workplace, ensuring effective shielding against Electromagnetic Interference (EMI) is now more important than ever.

    EMI is the result of electromagnetic energy from one device affecting the circuitry of another, either from electromagnetic radiation, coupling or induction. On particular frequencies it is also known as radio-frequency interference or RFI. A common example of this are the beeps you hear when a mobile phone is placed next to a speaker. This interference is caused by the GSM signal and whilst in this scenario the effect is only mildly annoying, the implications in other cases can be catastrophic, badly impacting or even destroying some electrical devices.

    EMI shields are made from either magnetic or conductive materials and help to isolate the device or product from exterior electromagnetic energy. The shields can be manufactured in all shapes and sizes and their ability to reduce interference depends on a wide number of factors including the material used, the size of the shielded volume and the frequency of the fields of interest, and the size, shape and orientation of apertures in a shield to an incident electromagnetic field.

    Here at TBA Protective Solutions we’ve been designing and manufacturing EMI shielding for over 30 years and can offer a comprehensive range of standard products including Beryllium Copper Fingerstrip gaskets, Card Cage Shields and Metal Foil tapes.

    Our expert research and development team can also help to produce bespoke solutions to meet your needs and have been involved in a wide range of projects, from the very first mobile phones to crucial EMI/RFI parts for BAe’s Eurofighter.

    As near field communication becomes more prevalent, it is also becoming essential to protect products with RFID cards, such as contactless cards and e-Passports, from fraud.  We worked with VoyagerBlue to help them to develop a slim card solution which sits next to the device and blocks RFI. You can learn more about this exciting project here [Link to VoyagerBlue Blog].

    For more information on what we can offer view our brochures or get in touch.

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