Patent ID: 9698868
Date: 2017-07-04
CPC Classifications: H04B

Claim:
1. A Power Line Communication device comprising a modem; a power supply to power said modem from an AC power line; the power supply comprising a low-pass filter; a coupling circuit to couple said modem to said power line for transmitting and receiving modulated data, wherein said coupling circuit comprises a shunt element and a serial LC filter; wherein said LC filter comprises a capacitive circuit and an inductive circuit: wherein said shunt element comprises a rectifier connected to the power supply; wherein a first terminal of the capacitive circuit of the LC filter is connected to one terminal of the power line and a first terminal of the shunt element is connected to a second terminal of the power line; and wherein a terminal of the rectifier is connected to the low-pass filter for providing DC power supply to said modem.