RFID (Radio Frequency Identification) and NFC (Near Field Communication) are both wireless communication technologies,
Ferrite absorbing materialIt is a material that can effectively absorb electromagnetic waves in the high frequency range. Combining these two technologies, ferrite absorption has a wide range of applications in wireless identification, communication, IoT and other fields.
This article will provide a detailed introduction to the principles, properties, preparation methods, and applications of RFID/NFC ferrite absorbing materials.
1、 The principle of RFID/NFC ferrite absorbing materials
RFID and NFC technologies both communicate through electromagnetic fields. RFID is mainly used in fields such as the Internet of Things, intelligent transportation, intelligent manufacturing, and smart homes. It communicates wirelessly through readers and tags to achieve reading, writing, and tracking of items. NFC technology is mainly used in fields such as secure payment, access control management, data transmission, and sharing.
Ferrite absorbing materialIt is a material that can absorb electromagnetic waves and minimize interference in signal transmission, thereby ensuring the reliability and safety of communication. The absorption capacity of ferrite absorbing materials depends on factors such as the size, magnetic permeability, and thickness of ferrite powder particles.
2、 Performance of RFID/NFC ferrite absorbing materials
RFID/NFC ferrite absorbing materials have the following performance characteristics:
1. Broadband performance
RFID/NFC ferrite absorbing materials have wideband absorption properties and can effectively absorb electromagnetic waves in the frequency range of 300MHz~10GHz.
2. High absorption performance
The superior absorption performance of RFID/NFC ferrite absorbing materials can minimize the reflectivity of electromagnetic waves, thereby improving the quality of received signals.
3. Good thermal stability
RFID/NFC ferrite absorbing materials are not easily affected by environmental factors such as temperature and humidity, and have good thermal stability.
4. Strong corrosion resistance
RFID/NFC ferrite absorbing materials can work in highly corrosive environments such as acid and alkali, with strong long-term stability.
3、 Preparation method of RFID/NFC ferrite absorbing material
The preparation methods of RFID/NFC ferrite absorbing materials mainly include the following aspects:
1. Selection of ferrite powder
preparation
RFID/NFC ferrite absorbing materialIt is necessary to choose a suitable ferrite powder, as the magnetic permeability, particle size, shape, etc. of the powder all affect the material's absorbing properties.
2. Material preparation
Mix ferrite powder, epoxy resin, hardener and other components to prepare ferrite absorbing materials.
3. Material Forming
Put the mixed ingredients into the mold and shape it. Injection molding, pressing, casting and other methods can be used for molding.
After the material is formed, the ferrite absorbing material needs to undergo post-treatment processes such as baking and curing to improve its absorbing performance and stability.
4、 Application of RFID/NFC Ferrite Absorbing Materials
RFID/NFC ferrite absorbing materials have a wide range of applications and are commonly used in the following fields:
1. Communication field
RFID/NFC ferrite absorbing materials can be used in electronic components such as RF filters, antennas, and high-speed cables to improve their operational stability.
2. Automotive field
RFID/NFC ferrite absorbing materials can be applied in electronic systems such as automotive radar and satellite navigation to improve the safety and accuracy of automobiles.
3. Military field
RFID/NFC ferrite absorbing materials can be used in electrical equipment such as military radar, communication, and interference countermeasure systems to enhance their concealment and anti-interference capabilities.
4. Medical field
RFID/NFC ferrite absorbing materials can be used in medical devices to reduce the impact of electromagnetic waves on patient health.
Therefore, RFID/NFC ferrite absorption is a new type of material with broad application prospects. Its excellent absorption performance, high temperature resistance, corrosion resistance and other performance advantages have made it increasingly widely used.
