POWER LINE CARRIER COMMUNICATION EQUIPMENT AND POWER LINE CARRIER COMMUNICATION FILTER

摘要

PROBLEM TO BE SOLVED: To provide a power line carrier communication equipment for selecting a low pass filter with a proper degree synchronously with transmission power to a power line and enhancing a power consumption efficiency of the low pass filter. SOLUTION: A transmission circuit of power line carrier communication is provided with: the low pass filter 6 whose degree is variable and a control circuit 5' for controlling a transmission amplifier 1 whose transmission power is variable and outputting a degree variable signal of the low pass filter 6. The transmission circuit selects the degree of the low pass filter providing efficient power consumption on the basis of the degree variable signal outputted from the control circuit 5' and synchronously with the control of transmission power to suppress occurrence of alias. COPYRIGHT: (C)2004,JPO