Characterization Methods for Flexible Absorber SheetsOctober 14, 2018 by Würth Elektronik
Electromagnetic Interference (EMI) has become a serious problem as it can occur anywhere in electronic circuits with unpredictable and detrimental effects. This issue has grown in recent years due to a number of factors including increases in device frequency, high integration in electronic systems, higher power densities and reductions in PCB thickness and size.
The most common means of solving electromagnetic noise problems is to shield the system with conductive materials such as shielded enclosures, foil tape or conductive gaskets. Nevertheless, a large number of electronic devices have many parts that operate at high frequencies that can cause complex EMI problems that cannot be removed with conductive shielding. In order to avoid these issues, Flexible Absorber Sheets, which is made of a polymer filled with ferrite powder material, can be used to suppress the unwanted high-frequency EM components.