Correlation between unbalance and radiated fields in BPL structures

Abstract

In this paper, the physical phenomena of unbalance on the power mains network structure related to radiated EM fields caused by BPL signals, are discussed. It is shown that the unbalance of the power mains network is mainly responsible for this radiated emission when using the power mains for BPL (broadband over powerline) data transmission. The relationship between different unbalance parameters and the resulting type of radiated field is shown and could be the basis for defining appropriated test conditions, when characterising BPL modems and systems.