PH RF absorber materials including three categories, they are magnetic fabric (low-end), soft magnetic alloy (middle end) and sintered ferrite (high-end). All the items possess the function of magnetic.

By attached between the antenna and the back metal, forming a magnetic conduction channel, which can eliminate the interfere to antenna from metal (or other sources of interference), enable the antenna to transmit a signal normally.

The invention of emi shielding sheet provides a solution for the electromagnetic shielding of FPC, with good application effect, emi shielding sheet can effectively suppress electromagnetic interference, and at the same time, it can reduce the attenuation of transmission signals in FPC, and reduce the incompleteness of transmission signals. It has become an important raw material of FPC and is widely used in electronic products such as smart phones and tablet computers. We are a professional emi shielding sheet manufacturer, if you are interested in our products, please contact us.

The principle of emi shielding sheet

1. When the electromagnetic wave reaches the surface of the shield, the reflection of the incident wave is caused by the discontinuity of impedance at the interface between the air and the metal. This kind of reflection does not require that the shielding material must have a certain thickness, but only requires the discontinuity on the interface to reflect the incident wave. This kind of reflection does not require the shielding material to have a certain thickness, only the discontinuity at the interface.
2. The energy that is not reflected by the surface and enters the shielding body is attenuated by the shielding material during the forward propagation in the body. Also known as absorption.
3. When the residual energy that has not been attenuated in the shield body is transmitted to the other surface of the material, it encounters the interface with discontinuous metal-air impedance, which will form a re-reflection and return to the shield body. This reflection may have multiple reflections at the interface of the two metals. In a word, the attenuation of electromagnetic waves by emi shielding sheet is mainly based on the reflection and absorption of electromagnetic waves.