Patent ID: 8698573
Filing Date: 2014-04-15
Classification: H04B,H04L

Abstract:
1. An impedance stabilization device used for power line communication performed by superimposing a high-frequency signal on a power line composed of at least two lines, the impedance stabilization device comprising: a first circuit that includes a first impedance element and a high-frequency blocking element connected in parallel, and is inserted into at least one of the lines; and a second circuit that includes a second impedance element and a low-frequency blocking element connected in series, and via which the lines are connected, wherein the high-frequency blocking element has higher impedance than impedance of the first impedance element to the high-frequency signal, and has lower impedance than impedance of the first impedance element to one of a low-frequency alternating current and a direct current supplied to the power line, and the low-frequency blocking element has lower impedance than impedance of the second impedance element to the high-frequency signal, and has higher impedance than impedance of the second impedance element to one of the low-frequency alternating current and the direct current.