Closed Metal Chamber Configuration for Estimating RF Attenuation in Vehicles with Advanced Thermal Properties Windows

Windows with advanced thermal properties are commonly used in the railway industry. However, these glasses suppose a problem to the RF signal transmission (an attenuation of 30–40 dB) and many solutions are studied to avoid the attenuation of the electromagnetic waves. To characterize the attenuation of the different windows different systems can be used. In this paper, a system with a closed metal chamber is studied as it is closer to the real situation due to its similarity to a wagon. Simulations and experimental measurements are carried out to compare this setup with the anechoic chamber one.