Electromagnetic interferences caused by power line communications in the HF bands

With little cost and quick installation time by using existing power line networks, power line communication (PLC) is a very promising high-speed data communication techniques. However, as carrier frequency band of a PLC increases for high speed services, there arise many concerns about the possibility of its electromagnetic interferences or disturbances to the nearby other equipments. This paper introduces the latest status of electromagnetic interference standards of PLC in Korea and presents the measurement results of radiated and conducted emissions in the HF spectrum from a PLC modem. The measurement was done at AM radio band and amateur radio communication bands. These measurement results were compared with radiated and conducted electromagnetic emission limits specified in the Rules on radio wave in Korea.