On the development of a low cost, high performance, EMI shield

Developing an EMI shield for commercial products is a balance of ensuring adequate suppression of emissions while keeping the implementation cost to a minimum. A further and equally vital concern is to minimize the resistance to airflow in order that the system may be properly cooled. This paper presents a shield design that was successfully developed to meet these goals. More importantly, it examines the criteria that must be understood to permit the design of similar shields.