Receiver apparatus for three-phase power line carrier communications
Номер патента: ES8705173A1
Опубликовано: 16-04-1987
Автор(ы):
Принадлежит: Westinghouse Electric Corp
Опубликовано: 16-04-1987
Автор(ы):
Принадлежит: Westinghouse Electric Corp
Реферат: A transceiver is provided with both voltage and current coupling to a three phase transmission line system. Each phase conductor is coupled to a common point which is connected in signal communication with an input to a receiver. Another input of the receiver is coupled to the neutral conductor of the power line system by an H-field coupler. A signal coupling unit is associated with the voltage couplers between the common connection point and the first receiver input. The receiver is provided with the capability of comparing the voltage signal with the current signal and selecting the stronger of the two. Therefore, the transceiver of the present invention is less adversely affected by standing wave problems since the voltage and current signals are out of phase and voltage nodes are associated with current antinodes and vice versa. Therefore, regardless of the location along the standing wave that the transceiver is located, the best signal available will be used for demodulation purposes.
Receiver apparatus for three-phase power line carrier communications
Номер патента: CA1246709A. Автор: Kenneth C. Shuey. Владелец: Westinghouse Electric Corp. Дата публикации: 1988-12-13.