Theoretical and experimental shielding study of offices

In this work, the research has been carried out in two phases: shielding effectiveness of a building is calculated by using a multilayer model and compared with the measurements results inside building. Multilayer modeling enables us to obtain transmission and reflection coefficients of the layers, which are actually the rooms and/or floors that we are interested in. The second phase has been entered by making attenuation measurements by an automated measurement system. Two different situations have been tested. In the first one, the transmitting and the receiving antennas of the system have been located on the same floor of the building and the shielding effectiveness measurements have been carried out in the frequency range of 200 MHz -1000 MHz. In the second situation the receiver has been located one floor down and some single frequencies have been used during the measurements taken in various rooms at 952 and 937 MHz. The experimental results were found to be good agreement with theoretical results.