Abstract: Disclosed is a guided surface waveguide probe including a charge terminal configured to generate an electromagnetic field and a support apparatus that supports the charge terminal above a lossy conducting medium, wherein the electromagnetic field generated by the charge terminal synthesizes a wave front incident at a complex Brewster angle of incidence (?i,B) of the lossy conducting medium.

Abstract: Disclosed is a disaster warning device with a guided surface wave receive structure, an impedance matching network, a power circuit, a data processing circuit, and a warning output. The power circuit and the data processing circuit may be coupled to the guided surface wave receive structure. The power circuit may supply electrical energy to power to the data processing circuit and warning output. The power circuit may receive power from a guided surface wave. The data processing circuitry may receive data communications from a guided surface wave.

Abstract: Disclosed is hybrid communication in which a first message from a guided surface wave probe node is embedded in a guided surface wave, and a second message from a guided surface wave receive node uses a different messaging mechanism.

Abstract: Disclosed are various embodiments of a guided surface wave transmitter/receiver configured to transmit a guided surface wave at a first frequency and to receive guided surface waves at a second frequency, concurrently with the transmission of guided surface waves at the first frequency. The various embodiments can be configured to retransmit received power and applied the received power to an electrical load. The various embodiments of the guided surface wave transmitter/receiver also can be configured as an amplitude modulation (AM) repeater.

Abstract: Aspects of a guided surface waveguide probe site and the preparation thereof are described. In various embodiments, the guided surface waveguide probe site may include a propagation interface including a first region and a second region, and a guided surface waveguide probe configured to launch a guided surface wave along the propagation interface. In one aspect of the embodiments, at least a portion of the first region may be prepared to more efficiently launch or propagate the guided surface wave. Among embodiments, the portion of the first region, which may be composed of the Earth, may be treated or mixed with salt, gypsum, sand, or gravel, for example, among other compositions of matter. In other embodiments, the portion of the first region may be covered, insulated, irrigated, or temperature-controlled, for example. By preparing the site, a guided surface wave may be more efficiently launched and/or propagated.

Abstract: Disclosed are various embodiments for embedding data on a guided surface wave. A guided surface waveguide probe emits power as a guided surface wave received by a guided surface wave receive structure circuit. An aggregate electric load of the receiver circuit is modulated with reference to a data signal. A current at the guided surface waveguide probe is monitored. A data signal is recaptured at the guided surface waveguide probe.

Abstract: Disclosed are various embodiments for transmitting energy at multiple frequencies via a guided surface wave along the surface of a lossy medium such as, e.g., a terrestrial medium by exciting a guided surface waveguide probe.

Abstract: Aspects of a hierarchical power distribution network are described. In some embodiments, a first guided surface waveguide probe launches a first guided surface wave along a surface of a terrestrial medium within a first power distribution region. A guided surface wave receive structure obtains electrical energy from the first guided surface wave. A second guided surface waveguide probe launches a second guided surface wave along the surface of the terrestrial medium within a second power distribution region using the electrical energy obtained from the first guided surface wave.

Abstract: Disclosed are various embodiments for frequency-division multiplexing for wireless power providers using guided surface waveguide probes to transmit power. Guided surface waveguide probes may transmit power on multiple frequencies with potentially overlapping service areas. Frequency-agile wireless power receivers may tune to one or more frequencies. Cost, availability, and/or other information may be provided to the wireless power receivers. Power usage may be reported by the wireless power receivers to power providers.