Electro-magnetic Shielding Technologies in Hospital

In a hospital, many equipments use electro-magnetic wave. The equipment which uses for energy transmits very high power. This high power electro-magnetic wave disturbs other electronic equipments which use the same frequency. To avoid the disturbance, frequency selective shielding technologies are effective. The laminated structure consisting of metal wire grid and dielectric layer are studied. The characteristics of these structures are controlled by the parameters such as wire diameter and spacing. The characteristics are calculated by the use of the transmission line model, and measured. All the measured results show good match with the calculated results.