High permeability and low loss magnetic isolation sheet: the core material for breaking through wireless charging and high-frequency electronic device magnetic field interference

1、 Material Overview: High permeability and low loss magnetic isolation sheet solves the problem of magnetic field management in electronic devices

In recent years, wireless charging, intelligent terminals, IoT devices, and new energy vehicle electronic systems have developed rapidly, and the demand for magnetic field management within electronic devices has been continuously increasing.

During wireless charging, the transmitting coil generates an alternating magnetic field and transmits energy to the receiving end through magnetic coupling. However, when the magnetic field leaks into other metal structures or electronic components inside the device, it can cause energy loss, increased heat generation, and electromagnetic interference, reducing charging efficiency and device stability.

High permeability and low loss magnetic isolation sheet is a functional material used for magnetic field regulation. It forms a low magnetic resistance path through high permeability materials, which concentrates the alternating magnetic field in the working area of the coil and reduces the diffusion of the magnetic field towards non target directions.

Unlike traditional shielding materials that mainly rely on reflection and absorption of electromagnetic waves, magnetic separators mainly achieve magnetic field management through "magnetic field guidance". Their core function is to optimize magnetic circuits and improve energy transmission efficiency.

Advanced Institute Technology focuses on magnetic composite material technology to develop high permeability and low loss magnetic isolation products. Through material formula optimization, microstructure design, and flexible processing technology, it provides high-performance magnetic isolation solutions for wireless charging, NFC communication, and high-frequency electronic devices.

2、 Core advantage: Balancing high magnetic permeability and low loss, achieving efficient magnetic field control

High magnetic permeability, improving magnetic field utilization efficiency

The high permeability and low loss magnetic isolation sheet uses high permeability soft magnetic materials as the core functional layer, which enables the material to quickly respond to external magnetic field changes and concentrate the magnetic field lines to guide them to the target area.

In wireless charging applications, magnetic separators can reduce the diffusion of the magnetic field generated by the coil to the back of the device, allowing more magnetic energy to participate in effective transmission, thereby improving charging efficiency.

For miniaturized devices such as smartphones, smartwatches, and wireless earphones, high permeability magnetic separators can optimize magnetic circuit design in limited spaces and improve the overall performance of wireless charging systems.

Low loss characteristics, reducing equipment heating issues

In a high-frequency alternating magnetic field environment, magnetic materials are prone to magnetic losses, including hysteresis losses and eddy current losses.

By optimizing material composition and microstructure design, high permeability and low loss magnetic separators can reduce energy loss under high-frequency working conditions, ensuring stable performance of materials in wireless charging, high-frequency communication and other scenarios.

The low loss characteristic can not only reduce the heat generation during equipment operation, but also help improve the long-term reliability of electronic systems.

Flexible structural design to meet the needs of lightweight electronic devices

With the continuous development of intelligent terminals towards lightweight and curved surfaces, traditional rigid magnetic materials are no longer able to meet the installation requirements of complex structures.

The flexible magnetic isolation sheet developed by Advanced Institute Technology can be cut, bonded, and processed according to the equipment structure, and is suitable for electronic products of different sizes and shapes.

Materials can be provided with different thickness specifications according to customer needs, while maintaining magnetic performance and meeting spatial height limitations, providing more possibilities for the design of miniaturized electronic devices.

3、 Material System and Manufacturing Technology: Creating High Performance Magnetic Management Materials

The performance of high permeability and low loss magnetic separators depends on the magnetic material system, structural design, and processing technology.

Advanced Institute Technology develops various soft magnetic material systems based on different application scenarios:

Nano crystalline soft magnetic materials

Nanocrystalline materials have high magnetic permeability, low loss, and excellent frequency response capabilities, making them suitable for high-performance wireless charging, high-frequency electronic devices, and other application scenarios.

Its fine grain structure can reduce magnetic losses and improve the stability of materials in high-frequency environments.

Ferrite magnetic materials

Ferrite materials have good insulation properties and high magnetic permeability, and are commonly used as magnetic insulation materials in wireless charging, NFC, and RFID devices.

Its stable magnetic properties can meet the long-term operational needs of consumer electronic devices.

Composite soft magnetic material

By combining magnetic powder with flexible substrate, material flexibility can be achieved and processing adaptability can be improved.

Composite structures can balance magnetic performance, mechanical performance, and installation convenience, meeting the needs of different end products.

4、 Typical application scenarios: covering wireless charging and high-frequency electronics fields

Wireless charging device

Wireless charging technology has been widely used in smartphones, smartwatches, wireless headphones, and wireless charging systems for new energy vehicles.

High permeability and low loss magnetic separators can optimize the magnetic flux path of the coil, improve charging efficiency, and reduce the impact of magnetic fields on internal components of the equipment.

NFC and RFID communication devices

The NFC/RFID system achieves data transmission through close proximity magnetic field coupling. When there are metal structures inside the device, it is easy to cause signal attenuation.

Magnetic separators can improve magnetic field distribution, enhance communication distance and signal stability, and are widely used in devices such as mobile NFC modules, smart door locks, and payment terminals.

Smart wearable devices

The limited space of smart bracelets, smartwatches and other products, as well as the integration of wireless charging, sensors and communication modules, pose higher requirements for magnetic field control.

Flexible magnetic separators can adapt to curved surface structure installation and achieve lightweight magnetic management.

New energy vehicle electronic system

New energy vehicles contain a large number of motor control, battery management, and high-frequency communication modules, which constantly increase the requirements for electromagnetic environment stability.

High permeability and low loss magnetic separators can be applied in vehicle wireless charging, electronic control modules, and high-frequency equipment to help optimize magnetic field distribution and improve system reliability.

5、 Technology Trend: Magnetic Barrier Materials Support the Development of Next Generation Intelligent Devices

With the continuous development of AI terminals, smart cars, IoT devices, and wireless energy transmission technology, the demand for high-performance magnetic management materials in electronic devices continues to grow.

The future development of magnetic separator materials will be in the following directions:

• Higher magnetic permeability for more efficient magnetic field control;
• Lower losses and improve high-frequency work efficiency;
• Thinner and lighter, meeting the needs of device miniaturization;
• Higher flexibility, suitable for complex structural designs.

As an important functional material connecting magnetic material technology and intelligent electronic devices, high permeability and low loss magnetic separators will continue to promote the upgrading of wireless charging, high-frequency communication, and intelligent terminal industries.

Advanced Institute (Shenzhen) Technology Co., Ltd. has long focused on the research and development of electromagnetic shielding materials, absorbing materials, flexible substrate coatings, and functional composite materials. It has its own brand "Research Platinum" and can provide a variety of electromagnetic compatibility solutions including magnetic separators, absorbing materials, conductive shielding materials, etc., providing material support for the fields of communication, new energy vehicles, intelligent electronics, and high-end manufacturing.