Introduction to absorbing materials (Baidu Encyclopedia explanation): the so-called absorbing materials refer to the materials that can absorb or greatly reduce the electromagnetic wave energy projected on its surface, so as to reduce the interference of electromagnetic waves. In engineering application, in addition to high absorption rate of electromagnetic wave in a wide frequency band, it is also required to have the properties of light weight, temperature resistance, humidity resistance and corrosion resistance.
The application of absorbing materials can be roughly divided into mobile phone, wireless charger, GPS, RFID / NFC, high frequency / high performance, etc
1) Mobile phone - absorbing material
The special absorbing material for mobile phone can be used to cut any electromagnetic wave / harmonic noise / crosstalk that occurs on the electromagnetic wave of PCB label, and any electromagnetic wave noise surrounding consumer electronic equipment.
2) Wireless charging series - absorbing materials
Wii wireless induction charger special anti-interference material, this material is also known as magnetic separator. After the use of anti-interference material separator, the charging efficiency of wireless induction charger is improved and the stability is stronger.
3) GPS anti interference absorbing plate
GPS special anti-interference absorbing plate is a kind of functional composite material mainly absorbing electromagnetic wave, which can eliminate the interference effect of electromagnetic wave generated between internal components on navigation GPS.
4) High performance flexible electromagnetic absorbing materials
The thin flexible high performance chip can effectively suppress electromagnetic noise and can be wound on the electronic flexible FPC circuit board.
5) RFID, NFC anti metal interference materials
RFID tags in the reader signal generated by the induction of alternating electromagnetic field is easy to metal interference, in order to better application of card reading, in the product to add absorbing materials, can resist metal interference.
6) High frequency absorbing materials
High frequency absorbing materials are mainly used in high frequency applications of 5 ~ 30 GHz. It can absorb electromagnetic wave and realize EMI electromagnetic shielding.
7) Nanocrystalline anti interference material
It is mainly used in wireless charging, holster, wallet and other occasions.
8) Composite absorbing material
Composite absorbing materials are mainly used in some special occasions. They can be coated with copper foil or aluminum foil, which can reflect the electromagnetic wave which is not fully absorbed for secondary absorption.
Absorbing material: www.goodsmaterial.com