Electromagnetic bandgap structures (known as EBG) are a type of metamaterial – a structure carefully designed to have electromagnetic properties that don’t occur in nature – that can be tuned to allow some frequencies to pass through while blocking others. By packaging an EBG as a surface mount component, it can be made into a removable common mode filter that can placed on a high-speed digital printed circuit board and used to reduce interference to the signal.
EBGs are much smaller than conventional filters and offer great potential for miniaturization on high-density interconnects. Our newest whitepaper details how researchers used simulation with CST Studio Suite® to design a removable EBG filter. The filter was modeled in both the time and frequency domain in order to analyze and optimize its filtering performance and to replicate time-domain reflectometry to analyze signal integrity (SI). The resulting R-EBG component offers excellent interference filtering in a compact, versatile package.
Read the full whitepaper.
Antonio Orlandi is a Full Professor at University of L'Aquila.