Method and system for multiple-input multiple-output power line communication coupling

A method performed

• in a circuit for powerline communication comprising:
• a choke with three terminals coupled to line, neutral, and earth lines via input capacitors;
• a first transformer with two terminals coupled to the choke;
• and
• a coupling circuit comprising a plurality of powerline communication receivers, the method comprising:
• receiving an alternating current (AC) power signal and radio frequency (RF) signals via the input capacitors;
• receiving a first RF signal in the first receiver of a plurality of receivers via a secondary coil of the first transformer;
• receiving a second RF signal in the second receiver of the plurality of receivers via a center terminal of a capacitor pair coupled to primary coils of the first transformer;
• and
• receiving a third RF signal in the third receiver of the plurality of receivers via a fourth terminal of the choke.

A system, comprising:

• a circuit for powerline communication comprising:
• a 4-wire choke with three terminals coupled to line, neutral, and earth lines via input capacitors for receiving an alternating current (AC) power signal and radio frequency (RF) signals;
• a first transformer with two terminals coupled to the choke;
• and
• a coupling circuit comprising a plurality of powerline communication receivers, a first receiver of the plurality of powerline communication receivers for receiving a first RF signal via a secondary coil of the first transformer, a second receiver of the plurality of powerline communication receivers for receiving a second RF signal via a second transformer coupled to a center terminal of a capacitor pair coupled to primary coils of the first transformer, and a third receiver of the plurality of powerline receivers for receiving a third RF signal via a fourth terminal of the choke.