1. EMC (shielding, absorption, suppression)
Absorbing material is a kind of functional composite material mainly absorbing electromagnetic wave. It can eliminate the back and forth reflection of electromagnetic wave in shielding cavity, reduce the interference of clutter on its own equipment, and effectively prevent electromagnetic radiation from disturbing and harming surrounding equipment and personnel. It is an advanced means to eliminate electromagnetic wave pollution. The application of absorbing materials in electronic equipment can absorb the leakage of electromagnetic radiation, which can achieve the purpose of eliminating electromagnetic interference. According to the law of electromagnetic wave propagating from the direction of low magnetism to high permeability in medium, high permeability ferrite is used to guide electromagnetic wave. Through resonance, a large amount of radiation energy of electromagnetic wave is absorbed, and then the energy of electromagnetic wave is transformed into heat energy through coupling.
2. Metal resistance (payment)
In RFID equipment, the electronic tag should be integrated or attached to the product. As a part of the equipment, it is often necessary to stick the electronic tag (usually passive) on the surface of metal and other conductive objects or near the place with metal devices due to the limited space. In this way, the tag under the action of the signal from the reader, the induced alternating electromagnetic field is easy to be attenuated by the eddy current of the metal, and the signal strength is greatly weakened, resulting in the failure of the reading process. Therefore, it is necessary to add metal resistant absorbing materials to improve the card reading sensitivity.
3. Magnetic isolation (Wireless charger)
The wireless charger changes from 220 V power supply to a sympathetic electromagnetic field, and then the sympathetic electromagnetic field generates a sympathetic electromagnetic field, and then the sympathetic electromagnetic field turns into current charging; when the sympathetic electromagnetic field encounters metal, it will produce electronic eddy current, which will produce skin effect on the metal, generate heat energy on the metal, reduce the charging efficiency and waste electric energy. And the interference to the main board of the line affects the normal operation of the whole charger. The efficiency can be improved by providing a circuit for the sympathetic magnetic field with a high magnetic flux by using a magnetic absorbing material.
If you happen to have the above three aspects of new needs, you can contact us at any time. Shenzhen Jingju is a high-tech enterprise focusing on the research and development, manufacturing and sales of microwave absorbing materials, EMI shielding materials, magnetic separators and magnetic materials. Products are widely used in mobile phones, electronic equipment, RFID / NFC, wireless charger, electronic components, radar and microwave communication system clutter suppression, anti electromagnetic interference and other technical fields
Absorbing material: www.goodsmaterial.com