Electric Field Distribution inside of Building Structures in AM Radio Wave

Abstract

The electric field distributions inside of some building structures consisting flat plates in AM radio wave are experimentally studied using scale models of 1/300. The models have simple shapes such as a flat plate, inverted L, chanels etc. From the results of experiments, it is noticed that the field strength inside of the buildings is greatly reduced because of the effects of conducting plates. Especially, the building like a garage shows a high shielding effectiveness over 20dB. The results obtained here give us some knowledge for estimating the shielding effectiveness of the building structures using a theoretical analysis.