A method for operating a wireline communication device on a wireless communication network includes (a) receiving a downlink radio frequency (RF) electrical signal at a first connector, (b) converting the downlink RF electrical signal to a downlink access signal having a format that is compatible with the wireline communication device, and (c) providing the downlink access signal to a second connector for transporting to the wireline communication device. A method for extending a wireline communication network includes (a) receiving a downlink wireline signal at a node of the wireline communication network, (b) converting the downlink wireline signal to a downlink RF electrical signal, and (c) converting the downlink RF electrical signal to a downlink wireless signal, for transmission to one or more communication devices which are not physically connected to the wireline communication network.

A method for operating a wireline communication device on a wireless communication network includes (a) receiving a downlink radio frequency (RF) electrical signal at a first connector, (b) converting the downlink RF electrical signal to a downlink access signal having a format that is compatible with the wireline communication device, and (c) providing the downlink access signal to a second connector for transporting to the wireline communication device. A method for extending a wireline communication network includes (a) receiving a downlink wireline signal at a node of the wireline communication network, (b) converting the downlink wireline signal to a downlink RF electrical signal, and (c) converting the downlink RF electrical signal to a downlink wireless signal, for transmission to one or more communication devices which are not physically connected to the wireline communication network.

A self-calibrating transmission line resonator oscillating driver apparatus, including: a first output driver module configured to transmit a first forward signal along a transmission line; a second output driver module configured to transmit a second forward signal along the transmission line; a first reflection detection module configured to detect a first return signal of the first forward signal reflected along the transmission line; and a second reflection detection module configured to detect a second return signal of the second forward signal reflected along the transmission line; wherein, when the first reflection detection module detects the first return signal of the first forward signal reflected along the second direction of the transmission line, providing a signal to i) change a power state of the first output driver module to an off-power state and to ii) change a power state of the second output driver module to an on-power state.

An object of the present technique is to provide a transmission path that is capable of preventing deterioration of signal quality of a transmitted electric signal. The transmission path includes a reference portion, a first reflection suppressing portion, a second reflection suppressing portion, a first non-reference portion, and a second non-reference portion. The reference portion has an impedance that differs from each of the first non-reference portion and the second non-reference portion, and the first reflection suppressing portion has an impedance that is capable of suppressing a reflection coefficient of an impedance of the first transmission/reception terminal and an impedance of the first non-reference portion and has an electrical length that is equal to or shorter than an electrical length of the reference portion. The second reflection suppressing portion has an impedance that is capable of suppressing a reflection coefficient of an impedance of the second transmission/reception terminal and the impedance of the second non-reference portion and has an electrical length that is equal to or shorter than the electrical length of the reference portion.

A first completion system with electrical isolation, electronics, and a first side of a coupler is installed in a borehole drilled in a geological formation. A second completion system is installed in the borehole after installation of the first completion system. The second completion system has a second side of the coupler aligned with the first side of the coupler and an umbilical which carries power from a surface of the geological formation to the second side of the coupler. Power is sent from the second side of the coupler to the first side of the coupler, from the first side of the coupler to a first side of the electrical isolation, and from the first side of the electrical isolation to a second side of the electrical isolation via an isolation barrier. The power at the second side of the electrical isolation is provided to the electronics.

An on-board communication system includes a plurality of function units mounted on a vehicle and performing predetermined information communication, a plurality of communication units disposed respectively corresponding to the plurality of function units, and a plurality of wired transfer paths connecting the plurality of communication units to one another. Each of the plurality of communication units transmits and receives signals in a radio frequency band to and from the other communication units via the wired transfer paths, the signals being modulated and including communication information to be transferred among the function units.

An on-board communication system includes a plurality of function units mounted on a vehicle and performing predetermined information communication, a plurality of communication units disposed respectively corresponding to the plurality of function units, and a plurality of wired transfer paths connecting the plurality of communication units to one another. Each of the plurality of communication units transmits and receives signals in a radio frequency band to and from the other communication units via the wired transfer paths, the signals being modulated and including communication information to be transferred among the function units.

The present disclosure aims to provide a power wiring network apparatus capable of constructing a highly portable power wiring network, without the need to maintain infrastructure. A power wiring network apparatus includes a wiring member, including first connectors and a conductive portion electrically connecting the first connectors to enable power supply, and circuit elements each including a second connector mechanically and electrically attachable to any first connector. The circuit elements include energy harvesting elements capable of outputting, from the second connector, power generated by energy harvesting and load elements capable of consuming power inputted from the second connector. At least some energy harvesting elements and load elements are capable of power line data communication via a power line including the first connectors and conductive portion.

The present disclosure aims to provide a power wiring network apparatus capable of constructing a highly portable power wiring network, without the need to maintain infrastructure. A power wiring network apparatus includes a wiring member, including first connectors and a conductive portion electrically connecting the first connectors to enable power supply, and circuit elements each including a second connector mechanically and electrically attachable to any first connector. The circuit elements include energy harvesting elements capable of outputting, from the second connector, power generated by energy harvesting and load elements capable of consuming power inputted from the second connector. At least some energy harvesting elements and load elements are capable of power line data communication via a power line including the first connectors and conductive portion.

A slave communication apparatus including a clock recovering section that recovers a clock signal from a transmission signal having a first signal value when the clock is a first level, a second signal value when the clock is a second level and data has a first data value, and a third signal value between the first and second signal values when the clock is the second level and the data has a second data value; and a data recovering section that recovers the data, wherein the data recovering section sets the data threshold value to be a first setting value between the second and third signal values in response to the recovered data having the second data value, and sets the data threshold value to be a second setting value between the first and third signal values in response to the recovered data having the first data value.