Patent ID: 8653952
Filing Date: 2014-02-18
Classification: H04B

Abstract:
1. A power line communication system comprising: a plurality of communication nodes; a communication line coupling the plurality of communication nodes, the communication line formed of a balanced line including a first communication line and a second communication line; a first direct current power line coupling a first connection point of the first communication line with a positive terminal of a battery; a second direct current power line coupling a second connection point of the second communication line with the positive terminal of the battery; a first capacitor coupled between the first direct current power line and a ground; and a second capacitor coupled between the second direct current power line and the ground, wherein the plurality of communication nodes communicates with each other by superimposing a high frequency signal having a wavelength of λ to the communication line, the first capacitor is coupled with the first direct current power line at a position where a line length from the first connection point is (n×λ/2+λ/4), where n is a natural number including zero, and the second capacitor is coupled with the second direct current power line at a position where a line length from the second connection point is (n×λ/2+λ/4).