A simple propagation model for broadband powerline communications system

In-building powerline communications mainly concentrates on low frequencies below 30 MHz and there is a need to increase the frequency usage to cater for higher demand. Recently, there is research focusing on high frequency powerline communication above 30 MHz. It is still relatively new and it was found that in-building powerline measurements show a potential for low attenuation applications above 30 MHz. This research focuses on broadband powerline communications in the low voltage region or end user region above 30 MHz. A study was carried out to determine the effectiveness of the powerline communications and the test setup required mainly for implementing the high pass filter was described. A model representing the propagation channel was also identified. Initial data obtained indicates that broadband powerline communications are possible over the frequency range of 300–700 MHz.