A high frequency EMI/EMC analysis methodology for ships

Modern ships have numerous installed radio frequency (RF) systems and, as a consequence, there is a high likelihood of electromagnetic interference (EMI). To analyze RF systems EMI and electromagnetic compatibility (EMI/EMC), computational electromagnetic (CEM) modeling is often used. However, using CEM can be challenging due to a number of reasons, such as computational cost, associated with simulation time and computer memory, and obtaining sufficiently high accuracy, associated with simulated results. Computer memory cost and obtaining high accuracy are significant challenges for ship EMI/EMC, because it becomes an electrically large problem at GHz frequencies. This paper will provide an overview of a methodology to analyze high-frequency (=1GHz) ship EMI/EMC, using CEM, while maintaining reasonably high accuracy and reducing the computer memory cost.