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RFI and EMI - Contacts, Fingerstock and Gaskets

Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) have become a major problem confronting many industries. Their effects range from data loss to physical device damage. Common sources of RFI and EMI include electric motors, switching circuits, and certain electronic components, but the most likely source of Electromagnetic Interference is contact areas. This is where RFID and EMI-Reducing Jacket (ERJ) technology come into play.

RFID, or Radio Frequency Identification, is a technology that uses radio waves to identify electronic labels that store data. Using RFID technology, manufacturers and distributors can simply and accurately identify products or items with little or no human intervention. The ERJ, or Electromagnetic Interference Reducing Jacket, serves to shield contact areas such as wires, cables, connectors and contacts, from the radiation of high frequency modulated signals.

Fingerstock and gaskets are used to provide the necessary shielding for contact area protection. Fingerstock, which consists of a conductive shielding material, is used to block electromagnetic interference from entering or leaving protected contact points. Gaskets, which are a type of dust cover, are used to provide additional shielding for contact areas where fingerstock cannot be applied due to size or shape.

The main method for reducing RFI and EMI in contact areas is to install a fingerstock or gasket between two conductors. Fingerstock is usually used between the two conductors, while gaskets are used where fingerstock cannot be applied. Both are designed to create an impermeable physical barrier that will prevent RFI and EMI from entering or leaving protected contact points. The RFID reader or ERJ transmits a low-level signal through the fingerstock or gasket, allowing the RFID tags to be read without interference.

The effectiveness of RFID and ERJ technology depends on the quality of the fingerstock or gasket used and whether it meets industry standards. Fingerstock and gaskets used for RFI and EMI should be designed on the basis of the specifications of the device to be protected. The quality of the installation is also critical to ensure that no RFI or EMI penetrates the contact area.

Fingerstock and Gaskets are essential components for providing effective RFI and EMI protection in contact areas. The right combination of gasket and fingerstock should provide an effective barrier between two conductors, preventing RFI and EMI from entering or leaving protected contact points and allowing the RFID reader or ERJ to read the RFID tags without interference.

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