Theoretical Analysis and Design Techniques for Grounding to Accomplish EMI Control

The proper grounding is one of the most important considerations for Electromagnetic Interference (EMI) control. In the past the term grounding has been used in the additional sense of utilizing structure as the return path for completing the circuits. This has been common practice in the aircraft and automobile industry, but with the advent of much more sophisticated and sensitive systems, utilization of properly designed grounds has become one of the basic requirements. The analysis and the test results of complex electrical and electronics systems have shown that the majority of the Electromagnetic Compatibility (EMC) problems are directly attributed to the existing absolute grounding systems.