IRJ17-100ND300X200

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RFI and EMI - Shielding and Absorbing Materials

Electromagnetic interference (EMI) and radio frequency interference (RFI) are two terms often used interchangeably to describe the same phenomenon. These refer to the degradation of signals caused by the electromagnetic radiation from an external source. This can be from artificial means like other electronic components or from natural sources like the sun or lightning. In order to protect from EMI, shielding and absorption materials are used. IRJ17-100ND300X200 is one type of such materials that is commonly used in EMI/RFI applications. This article will discuss the application field and working principle of IRJ17-100ND300X200.

Application Field

IRJ17-100ND300X200 is most commonly used in electronic enclosures, cables, and systems where EMI/RFI containment is necessary. The material has been certified for use as shield material in shielded enclosures and many commercial sectors such as military and aerospace technologies, automobiles, mobile devices, and medical electronics.

In addition, IRJ17-100ND300X200 is often utilized as shielded vents in console housings, in cable shields, and in data and telecoms cabinets. The material can also be used in medical shielding applications, such as EMI shielding for MRI scanners, surrounding shields for ultrasound machines, and absorption solutions for imaging probes.

Working Principle

The working principle of IRJ17-100ND300X200 is that of impedance matching. Impedance is a measure of the resistance of an electrical circuit to alternating current or the ratio of voltage to current. In terms of EMI/RFI protection, the material is effective because it provides an electromagnetic barrier between the source of the radiation and the conducted and radiated emissions. It acts like a conductor that is matched in length and width with EMI/RFI wavelengths.

When the RF energy is conducted, IRJ17-100ND300X200 absorbs the energy and dissipates it through resistive loss. As the material absorbs energy, it creates a continuous shield that prevents the transmission of EMI/RFI radiation. This reduces the risk of interference from external sources and reduces the risk of crosstalk between circuits and devices.

The material also reduces interference from internal sources. As the material is conducting, it creates a system that re-directs current to ground when it is transmitted to unwanted areas. This improves signal integrity and reduces interference.

In conclusion, IRJ17-100ND300X200 is an effective shielding and absorbing material that is often used in EMI/RFI applications. It works by providing an impedance-matched barrier between the source of the radiation and the conducted and radiated emissions. The material also absorbs energy and dissipates it through resistive loss to create a continuous shield to prevent transmission of EMI/RFI radiation.

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