Patent ID: 8582312

Claim:
An electronic circuit board to be connected to a different electronic circuit board and including a first board having a first face and a second board having a second face, the first face and the second face being substantially parallel to each other and located on opposite end faces of the electronic circuit board, the electronic circuit board comprising: a first circuit, configured as a digital component, mounted on one end of the first face for performing analog signal processing; a second circuit, configured as a digital component, mounted on another end of the first face for performing digital signal processing; a connection part mounted on the second face and to be connected to the different electronic circuit board; a filter, configured as an analog component, for blocking a signal of a predetermined frequency band is provided on the second face; and a first conducting path for electrically connecting the second circuit and the connection part, wherein the connection part is mounted at a position overlapping the second circuit when viewed in a direction orthogonal to the first face and the second face, the electronic circuit board further comprising a PLC (power line circuit) integrated circuit mounted on the first face between the first circuit and the second circuit, for performing at least one of modulation processing and demodulation processing of a multicarrier signal.