Device for coupling out a common-mode signal in a power line communication network
First Claim
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1. A power line communication (PLC) system comprising:
- a PLC network; and
a device operatively connected to the PLC network to couple out a common-mode signal in the PLC network, wherein the device includes;
a first line, a second line and a third line that are connected to a phase line input terminal, to a neutral line input terminal and to a protective earth line input terminal, respectively, the phase line input terminal, the neutral line input terminal, and the protective earth line input terminal, collectively, have a configuration and construction so as to be operatively connected to a phase line, a neutral line, and a protective earth line, respectively, of the PLC network;
a first termination impedance element;
a common-mode choke connected to the first termination impedance element operative to couple out the common-mode signal from the first, second and third lines;
a second termination impedance element coupled in line between ground and a first output;
a third termination impedance element coupled in line between ground and a second output; and
a fourth termination impedance element coupled in line between ground and a third output,wherein the first termination impedance element has an impedance that is higher than an impedance of the PLC network,wherein the second, third, and fourth termination impedances match the impedance of the PLC network, andwherein the first termination impedance is coupled in line between ground and a fourth output, the fourth output being the sole output to output the common-mode signal coupled out by the common-mode choke.
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Abstract
A device for determining a common-mode signal in a power line communication network. The device includes a first line, a second line, and a third line that are connected to a first terminal, to a second terminal, and to a third terminal, respectively. The first, the second, and the third terminal are configured to be connected to a phase line, a neutral line, and a protective ground line of the power line communication network, respectively. The device further includes a common-mode choke configured to couple out the common signal from the first, second, and third line, and the common-mode choke is connected to a termination impedance which is higher than an impedance of the power line communication network.
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Citations
25 Claims
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1. A power line communication (PLC) system comprising:
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a PLC network; and a device operatively connected to the PLC network to couple out a common-mode signal in the PLC network, wherein the device includes; a first line, a second line and a third line that are connected to a phase line input terminal, to a neutral line input terminal and to a protective earth line input terminal, respectively, the phase line input terminal, the neutral line input terminal, and the protective earth line input terminal, collectively, have a configuration and construction so as to be operatively connected to a phase line, a neutral line, and a protective earth line, respectively, of the PLC network; a first termination impedance element; a common-mode choke connected to the first termination impedance element operative to couple out the common-mode signal from the first, second and third lines; a second termination impedance element coupled in line between ground and a first output; a third termination impedance element coupled in line between ground and a second output; and a fourth termination impedance element coupled in line between ground and a third output, wherein the first termination impedance element has an impedance that is higher than an impedance of the PLC network, wherein the second, third, and fourth termination impedances match the impedance of the PLC network, and wherein the first termination impedance is coupled in line between ground and a fourth output, the fourth output being the sole output to output the common-mode signal coupled out by the common-mode choke. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A Power Line Communication (PLC) system comprising:
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a PLC network having an impedance; and a Multiple-Input Multiple-Output (MIMO) PLC modem operatively connected to the PLC network to couple out a common-mode signal in the PLC network, the MIMO PLC modem including; a first line, a second line and a third line that are connected to a phase line input terminal, to a neutral line input terminal and to a protective earth line input terminal, respectively, the phase line input terminal, the neutral line input terminal, and the protective earth line input terminal, collectively, have a configuration and construction so as to be operatively connected to a phase line, a neutral line, and a protective earth line, respectively, of the PLC network; a first termination impedance element; a common-mode choke connected to the first termination impedance element operative to couple out the common-mode signal from the first, second and third lines; and a plurality of coupling capacitors respectively coupled in series with the first line, the second line and the third line between the phase line input, neutral line input, and protective earth line input terminals and the common-mode choke; a second termination impedance element coupled between ground and a first output; a third termination impedance element coupled between ground and a second output; and a fourth termination impedance element coupled between ground and a third output, wherein the first termination impedance element has an impedance value higher than the impedance value of the PLC network, and wherein the second, third, and fourth termination impedances match the impedance value of the PLC network, and wherein the first termination impedance is coupled between ground and a fourth output, the fourth output being the sole output to output the common-mode signal coupled out by the common-mode choke. - View Dependent Claims (22, 23, 24, 25)
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Specification
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Current AssigneeSony Corporation (Sony Group Corp.)
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Original AssigneeSony Corporation (Sony Group Corp.)
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InventorsSchwager, Andreas, Baeschlin, Werner
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Primary Examiner(s)Amrany, Adi
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Application NumberUS13/058,281Publication NumberTime in Patent Office2,293 DaysField of Search307/2US Class Current1/1CPC Class CodesH04B 2203/5466 using three phases conductorsH04B 2203/5483 using coupling circuitsH04B 3/30 Reducing interference cause...H04B 3/54 Systems for transmission vi...H04B 3/56 Circuits for coupling, bloc...
