An integrated networking scheme that enables data communication and power delivery over a single connection for a network of low power devices spread across a local area is disclosed. The integrated networking scheme provides a simplified technique to transfer data signal and power signal using a single cable with power coupling/decoupling enabled through a bias T-network with diodes, which enable multi-point power injection. A special transistor-resistor network controls the received signal spectrum. The integrated networking scheme provides a signal over power adapter attached to each low power devices in the local area network to enable coupling and decoupling of data signal and power signal. The scheme provides wide-band data communication capabilities, enables plug-and-play power and data capabilities to remote devices.

A system includes an AC power module structured to provide alternating current (AC) electrical power; a power distribution wiring harness structured to receive the AC electrical power from the AC power module; a plurality of inductive coupling modules coupled to the power distribution wiring harness, and configured to transmit the AC electrical power to at least one load; and, a signal injection module structured to inject a communication signal on the power distribution wiring harness using signal modulation during a transient moment of operation corresponding to a low electrical noise operating range of electromagnetic interference generated by components of a vehicle.

A communication system can include a first transceiver and a second transceiver that can communicate digital baseband data via a direct current (DC) power line bus in the wellbore. One or more of the transceivers includes a demodulator for demodulating the digital baseband data received from the DC power line bus into multiple digital data streams, and includes a digital processor for filtering and applying error correction to the digital data streams to produce a decoded digital data stream.

Aspects of the subject disclosure may include, for example, receiving, by each of a plurality of receivers, one of a plurality of electromagnetic waves, each electromagnetic wave of the plurality of electromagnetic waves guided by a different one of a plurality of twin-lead transmission lines, each twin-lead transmission line sharing a wire, and each electromagnetic wave of the plurality of electromagnetic waves including a different one of a plurality of communication signals, and obtaining, by each of the plurality of receivers, one of the plurality of communication signals. Other embodiments are disclosed.

A power line communication device includes a DC power source device, a power line, and a master station that modulates a supply voltage VBUS supplied to the power line according to transmission data to be transmitted. The master station includes a modulation capacitor that is precharged with a modulation amplitude voltage, a polarity switch unit that determines a polarity of the modulation capacitor connected to the power line according to transmission data, and an inductor connected between the DC power source device and the power line.

A power line communication device including a current path provided between a first terminal and a second terminal. A coupling circuit includes a first circuit of a first inductor connected in parallel with a first capacitor and a first resistor, wherein the coupling circuit is connected between the first and second terminals. A sensor is configured to sense a communication parameter of the coupling circuit. The communication parameter may be a resonance of the first circuit, the quality (Q) factor of the resonance, the bandwidth (BW) of the coupling circuit, the resistance of the first resistor, or the impedance of the first circuit. A transceiver is adapted to couple to the first and second terminal to transmit a signal onto the current path or receive a signal from the current path responsive to the parameter of the coupling circuit and a level of current in the current path sensed by the sensor.

A transceiver device comprises a transceiver unit including an RF antenna, a serial communication port operatively coupleable with a further corresponding serial communication port of a protection and control device, a serial communication bus electrically connected between said serial communication port and said transceiver unit and having a transmission line and a reception line, a battery unit, and a feeding unit to feed said transceiver unit with a feeding voltage. The feeding unit comprises a first power supply stage electrically connected with said battery unit to harvest electric power from said battery unit and a second power supply stage electrically connected with the transmission line of said serial communication bus to harvest electric power from said transmission line, when said transmission line is said stand-by condition and takes an high-level voltage value.

Aspects of the subject disclosure may include, receiving a signal, and launching, according to the signal, an electromagnetic wave along a transmission medium, where the electromagnetic wave propagates along the transmission medium without requiring an electrical return path, and where the electromagnetic wave has a phase delay profile that is dependent on an azimuth angle about an axis of the transmission medium. Other embodiments are disclosed.

Induction heating power supplies, data collection systems, and induction heating systems to communicate over an induction heating cable are disclosed. An example induction heating power supply includes a power conversion circuit configured to: convert input power into induction heating power and transmit the induction heating power via an induction heating cable, and at least one of a receiver circuit coupled to the induction heating cable and configured to receive data via the induction heating cable or a transmitter circuit coupled to the induction heating cable and configured to transmit data via the induction heating cable.

Aspects of the subject disclosure may include, for example, a system for receiving first electromagnetic waves via a transmission medium without utilizing an electrical return path, and inducing second electromagnetic waves at an interface of the transmission medium without the electrical return path. In an embodiment, the first and second electromagnetic waves have a non-optical frequency range. Other embodiments are disclosed.