RFID metal interference is coming! Absorbing materials at a high frequency of 13.56MHz help you solve problems

Introduction: Metal interference at a frequency of 13.56MHz has always been a headache in RFID technology applications. However, a miraculous material called absorbing material from advanced technology can effectively solve this problem and bring convenience to RFID applications.

Subtitle 1: Introduction to RFID Tag Principle

RFID (Radio Frequency Identification) technology is a technique that uses radio frequency signals for non-contact data transmission and identification. In an RFID system, it consists of a reader/writer and an electronic tag. The reader serves as the transmitter, and the electronic tag serves as the receiver.

Subtitle 2: Problems in the Reading Distance of RFID Electronic Tags

With the increase of RF frequency, the maximum read and write distance of RFID electronic tags used at 13.56MHz frequency is usually only about 10 centimeters. This is mainly due to factors such as the power transmission efficiency between coils, the number of turns of the coils, the area enclosed by the coils, the relative angle of their placement, and the distance between them.

Subtitle 3: Impact of Metal Interference on RFID Tag Reading Distance

In some application scenarios, it is necessary to directly install the antenna of an RFID reader or electronic tag on a metal surface. However, magnetic coils directly installed on metal surfaces can be affected by induced eddy currents, resulting in obstructed data reading distance between the reader and electronic tag, and even misreading or reading failure.

Subtitle 4: Applications of Absorbing Materials

To address the impact of metal interference on the reading distance of RFID tags, absorbing materials can be used to eliminate interference. Absorbing material is a special material that can absorb electromagnetic waves, absorb radio frequency signals, and reduce interference.

Subtitle 5: Working principle of absorbing materials

Absorbing materials absorb the energy of incident electromagnetic waves, convert it into other forms of energy, and store or convert it into other harmless energy, thereby achieving absorption of radio frequency signals.

Subtitle 6: Selection and Use of Absorbing Materials

In RFID systems, suitable absorbing materials should be selected based on the required frequency of absorption. In RFID systems operating at a frequency of 13.56MHz, absorbing materials that can absorb 13.56MHz frequency can be selected to fully utilize their absorption effect.

Subtitle 7: Advantages and Application Cases of Absorbing Materials

The application of absorbing materials can greatly reduce the impact of metal interference on the reading distance of RFID tags, and improve the accuracy and stability of reading. Absorbing materials can be widely used in various scenarios that require solving metal interference problems, such as intelligent logistics, manufacturing, etc.

Subtitle 8: Conclusion

As a powerful tool to solve metal interference in RFID, absorbing materials can bring great convenience to the application of RFID systems. At a high frequency of 13.56MHz, the use of absorbing materials to eliminate metal interference can improve the reading distance and success rate of RFID tags, providing strong support for the development and application of RFID technology.