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Application of Absorbing Materials in 13.56MHz High Frequency

Author:admin   AddTime:2021-07-09

A layer of absorbing material is applied between the 13.56MHz RFID tag and the metal. The thickness of the absorbing material is usually between 0.1~0.5mm, but there are also 1.0mm 1.5mm absorbing materials, because the absorbing material has excellent magnetic permeability Energy, high permeability, low loss, provide an effective way for magnetic lines of force, so that a large amount of magnetic flux can smoothly flow through the absorbing material, and only a very small part of the residual magnetic flux can flow through the metal surface, resulting in eddy current heating effect. In this way, a large number of magnetic lines of force pass through the inside of the absorbing material, which greatly reduces the proportion of induced magnetic flux flowing through the metal surface, thereby greatly improving the reading characteristics of RFID.



In label design and frequency debugging, 13.56MHz is obviously an important reference frequency, which also requires the absorbing material to have good performance at this frequency, such as high magnetic permeability, to ensure the greatest degree of magnetic flux through Absorbing materials, at the same time, have a low loss factor to ensure that as many magnetic lines of force as possible can circulate and avoid reducing the distance of near field communication due to magnetic flux loss!

ferrite sheet:https://www.goodsmaterial.com/

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