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Application of absorbing materials in EMI (electromagnetic interference) and EMC (electromagnetic compatibility)

Author:admin   AddTime:2021-06-28

The absorbing material is a kind of functional composite material that mainly absorbs electromagnetic waves, which eliminates the back and forth reflection of electromagnetic waves in the shielding cavity, reduces the interference of clutter to its own equipment, and effectively prevents electromagnetic radiation from harassing and harming surrounding equipment and personnel. An advanced method to eliminate electromagnetic wave pollution. The use of absorbing materials in electronic equipment can absorb leaked electromagnetic radiation and achieve the purpose of eliminating electromagnetic interference. According to the law that electromagnetic waves propagate in the medium from low magnetic to high magnetic permeability, high magnetic permeability ferrite is used to guide electromagnetic waves, through resonance, a large amount of electromagnetic wave radiation energy is absorbed, and then the electromagnetic wave energy is converted into heat energy through coupling. Excess radio waves in the electronic system can be cut into shapes by absorbing materials, and pasted on the back of the touch panel or on the cable to resist electromagnetic interference EMI, and optimize the performance of the touch screen.



The projected capacitive touch screen of smart electronic devices is susceptible to electromagnetic interference, and the EMI voltage from internal and external electromagnetic interference will be capacitively coupled to the touch screen device. These electromagnetic interference voltages can cause phone movement in the touch screen, which may confuse the measurement of charge movement when the finger touches the screen, and affect the sensitivity and touch accuracy of the touch screen. The solution can be to use absorbing materials to absorb electromagnetic waves and eliminate interference.

ferrite sheet:https://www.goodsmaterial.com/

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