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Radio frequency interference and electromagnetic interference (RFI and EMI) are two distinct types of interference that can lead to communication interference when used in different frequencies. RFI is the unintended transmission of a radio signal, while EMI is an electromagnetic fielding produced by an electronic device. While both are capable of interfering with other signals, knowing the differences between them can help prevent interference from occurring.

When it comes to RFID and EMI, there are several contact media that are employed to mitigate the effects of interference. One type of contact media is called fingerstock, which is a composite material consisting of a mixture of metals. Fingerstock works by providing a physical barrier between two signals, reducing the amount of energy that can pass through. It also has the capability to reduce the strength of a signal if too much energy is transmitted. Fingerstock contact media is highly effective in controlling EMI, making it a great choice for RFI and EMI shielding.

Another type of contact media for RFI and EMI is gasketing. Gasketing is a material that is placed between two surfaces, usually made of rubber or foam. This material helps contain the flow of energy between the two surfaces, reducing the amount of interference. Gasketing can also help reduce the vibrations of the two surfaces, which can help reduce the amount of EMI produced.

Another popular contact media for RFI and EMI purposes is contacts. Contacts are small devices that are placed on or in a surface and provide a core connection between two entities. This connection can be used to allow the flow of energy, signals, or both between the two surfaces. Contacts can be used to create a “path” for the signal to travel along, reducing the amount of interference experienced by the signal.

Contacts, gaskets, and fingerstock are all effective contact media for mitigating the effects of RFI and EMI interference. All three have their own unique characteristics and uses, so be sure to assess the situation before making a selection. It is important to remember that while these contact media are effective in preventing EMI interference, it is also necessary to maintain a reasonable distance between devices emitting EMI and other electronic equipment that could be affected.

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