Aspects of the subject disclosure may include, a communication device with a support structure having first and second annular contacts formed on an outer surface thereof, a first radio device having a first inner surface of a first housing opening with a third contact, and a second radio device having a second inner surface of a second housing opening with a fourth contact. The support structure is positioned in and passes through the first and second housing openings thereby positioning the first and second radio devices in a stacked arrangement, and, when in the stacked arrangement, the first and third contacts are aligned and the second and fourth contact are aligned to provide a coupling between the first and second radio devices. Other embodiments are disclosed.

A system and method for inferring schematic and topological properties of an electrical distribution grid is provided. The system may include Remote Hubs, Subordinate Remotes, a Substation Receiver, and an associated Computing Platform and Concentrator. At least one intelligent edge transmitter, called a Remote Hub Edge Transmitter, may transmit messages on the electrical distribution grid by injecting a modulated current into a power main that supplies an electric meter. The Subordinate Remotes, Remote Hubs, the Substation Receiver, and the associated Computing Platform and Concentrator may contain processing units which execute stored instructions allowing each node in the network to implement methods for organizing the on-grid network and transmitting and receiving messages on the network. The Substation Receiver, Computing Platform and Concentrator may detect and infer schematic grid location attributes of the network and publish the detected and inferred attributes to other application systems including geospatial information systems maintaining the logical and physical network model.

Aspects of the subject disclosure may include, for example, a system for transmitting first electromagnetic waves that propagate on a surface of a component of a transit system, and receiving second electromagnetic waves that propagate on the surface of the component of the transit system. Other embodiments are disclosed.

The present application is concerned with a system for transmitting and/or receiving the control and sensing signals between the control units and the power electronic components. One system according to the present application comprises: a transceiver adapted to modulate the communication signal on a communication signal frequency band, and a coupler connected to the power conductor and adapted to couple the modulated communication signal to the power conductor. The present application also concerns a method for transmitting and receiving the control and sensing signals.

Provided are a power carrier signal coupling circuit and a communication system. The power carrier signal coupling circuit includes a first power carrier signal coupling channel and a second power carrier signal coupling channel. A phase of a three-phase alternating current (AC) power line serves as a common channel, the first power carrier signal coupling channel is arranged between the common channel and one of two phases of the three-phase AC power line other than the phase of the three-phase AC power line serving as the common channel; and the second power carrier signal coupling channel is arranged between the common channel and the other of the two phases of the three-phase AC power line other than the phase of the three-phase AC power line serving as the common channel.

Aspects of the subject disclosure may include, for example, a system for modulating a first electrical signal to generate first modulated electromagnetic waves, and transmitting the first modulated electromagnetic waves on a waveguide located in proximity to a transmission medium. In one embodiment, the first electromagnetic waves can induce second electromagnetic waves that propagate on an outer surface of the transmission medium. The second electromagnetic waves can have a first spectral range that is divided into, contains or otherwise includes a first control channel and a first plurality of bands. Other embodiments are disclosed.

A computer system at a substation of an electrical grid examines on-grid communication channels and for very channel, the system compares and correlates a GLA signal provided by a downstream transmitter on that channel to a reference GLA signal. The channel that provided the signal with the best correlation is mostly likely the channel with the transmitter. Thus, the feeder and phase of the signal can be determined from the correlation of signals.

A method and apparatus is provided for communicating data over a ground power line between a vehicle and a ground terminal. In one example, a first power unit detects a signal indicating connection between the first power unit and a remote power unit. Responsive to detecting the signal, one or more modems associated with the first power unit automatically establish a data connection with one or more remote modems associated with the remote power unit. After establishing the connection between the one or more modems in the first power unit and the one or more modems in the remote power unit, the one or more modems in the first power unit exchange data with the one or more modems in the remote power unit over the power line. In one example, the first power unit may comprise an onboard power unit in a vehicle (e.g., aircraft) and the remote power unit may comprise a ground power unit. Alternatively, the first power unit may comprise a ground power unit and the remote power unit may comprise in a vehicle (e.g., aircraft).

A system for receiving and processing signals received from a plurality of endpoints. Each endpoint includes an endpoint transmitter in electrical communication with a power distribution line within a power distribution system. The system comprises a power line coupler. A substation receiver is in electrical communication with the power line coupler. A substation circuit is in electrical communication with the substation transceiver. The substation circuit is configured to simultaneously demodulate signals received from the plurality of different endpoints.

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.