Coupling interfaces for communication transceivers over power lines
AssigneeSTMicroelectronics S.r.l.
InventorsRiccardo Fiorelli, Antonio Cataliotti, Dario Di Cara, Giovanni Tine
Life of this patent
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Abstract
A coupling interface couples a transceiver to one or more capacitive voltage dividers of a power transmission system. The coupling interface includes a first signal path including an adjustable inductance configured to form a resonance circuit with a capacitance associated with the one or more capacitive voltage dividers. The coupling interface may include a second signal path including an adjustable inductance configured to form a resonance circuit with the capacitance associated with the one or more capacitive voltage dividers.
Claims29
A coupling interface, comprising:
- a first terminal configured to couple to an intermediate node of a capacitive voltage divider, the capacitive voltage divider being coupled between a power line and a ground;
- a second terminal;
- a third terminal configured to couple to a communication device;
- a first set of one or more adjustable inductors configured to form a resonance circuit with a capacitance of the capacitive divider across the first and second terminals at one or more communication frequencies;
- and
- a first coupling circuitry configured to couple between the one or more adjustable inductors and the third terminal.
A coupling interface, comprising:
- a first terminal configured to couple to an intermediate node of a capacitive voltage divider, the capacitive voltage divider being coupled between a power line and a ground;
- a second terminal;
- a third terminal configured to couple to a communication device;
- a first set of one or more adjustable inductors configured to form a resonance circuit with a capacitance across the first and second terminals at one or more communication frequencies;
- and
- a first coupling circuitry configured to couple between the one or more adjustable inductors and the third terminal, wherein the second terminal is configured to couple to an intermediate node of a second capacitive voltage divider, the second capacitive voltage divider being coupled between a second power line and the ground.
A system, comprising:
- a communication device;
- and
- a coupling interface, including:
- a first terminal configured to couple to an intermediate node of a capacitive voltage divider, the capacitive voltage divider being coupled between a power line and a ground;
- a second terminal;
- a first set of one or more adjustable inductors configured to form a parallel resonance circuit with a capacitance across the first and second terminals at one or more communication frequencies of the communication device;
- and
- a first coupling circuitry configured to couple between the one or more adjustable inductors and the communication device.
A system, comprising:
- first means for coupling a transceiver to a first capacitive voltage divider of a power transmission system;
- second means for coupling the transceiver to the first capacitive voltage divider of the power transmission system;
- and
- means for selecting one of the first and second means for coupling to couple the transceiver to the power transmission system.
A method, comprising:
- coupling one or more adjustable inductors to an intermediate node of at least a first capacitive voltage divider to form a parallel resonance circuit with a capacitance associated with the intermediate node of the first capacitive voltage divider at one or more frequencies of a communication device, the first capacitive voltage divider being coupled between a power line and a ground;
- and
- coupling the communication device to the one or more adjustable inductors.
Dependencies are inferred from the claim text.