| 摘要 |
<p>Apparatus for coupling communication signal modulated radio frequency signals between an electrical power distribution line (100) and the electrical power wiring (115 or 122) at a customer's premises which includes a first transceiver (215) for transmitting and receiving electromagnetic energy is inductively coupled to the distribution line (100) and a second transceiver (210) for receiving electromagnetic energy from, and transmitting electromagnetic energy to, the first transceiver (215). The second transceiver (210) is coupled to the customer's power wiring (115 or 122) to receive communication signals from, and to supply communication signals to, the customer's power wiring (115 or 122). The electrical power for the first transceiver (215) can be supplied by inductive coupling to the power line (100) and/or a battery (238 or 432), the battery (238 or 432) being a back-up source when both inductive coupling and a battery are present.</p> |
