A pedestal is provided for mounting a portable antenna onto a platform. The pedestal includes a ring, a base, a horn and a prong composed of three-dimensionally printable composite resin. The ring attaches to the platform. The base inserts into the ring and includes an outer tube having a pair of axially distributed outer holes. The horn includes an inner tube for insertion into the outer tube and an inverted pyramid that connects to the inner tube. The inner tube includes at least three axially distributed inner holes. The prong has two probes that insert into the outer holes and two of the inner holes to secure the horn to the base.

An active base-tracking multi-antenna system and an active base-tracking antenna system for a vessel and an offshore structure are provided. The active base-tracking multi-antenna system may include: a fixing shaft fixed to a fixture on a vessel or an offshore structure; a gimbal unit disposed on a top of the fixing shaft and keep positions of a panning motor and antennas; the panning motor disposed on the gimbal unit and simultaneously rotating the antennas in a left-right direction; and the antennas connected to the panning motor. Therefore, it is possible to always keep the antennas in a stable horizontal position and greatly improve communication quality by adjusting the azimuths and vertical angles of the antennas in real time to an optimal state for communication with a base station.

An active base-tracking multi-antenna system and an active base-tracking antenna system for a vessel and an offshore structure are provided. The active base-tracking multi-antenna system may include: a fixing shaft fixed to a fixture on a vessel or an offshore structure; a gimbal unit disposed on a top of the fixing shaft and keep positions of a panning motor and antennas; the panning motor disposed on the gimbal unit and simultaneously rotating the antennas in a left-right direction; and the antennas connected to the panning motor. Therefore, it is possible to always keep the antennas in a stable horizontal position and greatly improve communication quality by adjusting the azimuths and vertical angles of the antennas in real time to an optimal state for communication with a base station.

Antenna assembly comprising the combination of a steerable phased array antenna with omnidirectional sector and a GNSS antenna, and antenna system comprising the antenna assembly.

An active towed sonar comprises an emission antenna integrated into a submersible object called a towfish, a submersible receive antenna called a streamer and a tow cable to tow the towfish and the streamer. The tow cable comprises a termination connected mechanically and electrically to the streamer. The termination comprises means of removable mechanical and electrical connection of the towfish to the tow cable, independently of the connection of the streamer.

A component including a substrate with dielectric coating on the substrate. The electrical reactance of the dielectric coating configured for the propagation of electromagnetic surface waves. The dielectric coating is arranged as a plurality of discrete pathways. Also a signal transmission system including a component, an electromagnetic surface wave transmitter coupled to the substrate, and an electromagnetic surface wave receiver also coupled to the substrate.

A mobile vehicle repeater antenna system, comprising: a scanning antenna system comprising one or more scanning antennas, wherein the one or more scanning antennas are configured to receive, for at least a first azimuth heading value and a second azimuth heading value, data comprising mobile communication signal and network parameters, a donor antenna system comprising one or more antennas, wherein the one or more antennas are configured to receive and transmit mobile communication signals, a controller connected to the scanning antenna system and the donor antenna system, wherein the controller is configured to compare the received data for the at least first azimuth heading value and the second azimuth heading value; determine whether the first azimuth heading value or the second azimuth heading value provides optimal network and signal parameters according to predefined criteria; and control operation of the one or more antennas of the donor antenna system in accordance with the determination.

A mobile vehicle repeater antenna system, comprising: a scanning antenna system comprising one or more scanning antennas, wherein the one or more scanning antennas are configured to receive, for at least a first azimuth heading value and a second azimuth heading value, data comprising mobile communication signal and network parameters, a donor antenna system comprising one or more antennas, wherein the one or more antennas are configured to receive and transmit mobile communication signals, a controller connected to the scanning antenna system and the donor antenna system, wherein the controller is configured to compare the received data for the at least first azimuth heading value and the second azimuth heading value; determine whether the first azimuth heading value or the second azimuth heading value provides optimal network and signal parameters according to predefined criteria; and control operation of the one or more antennas of the donor antenna system in accordance with the determination.

The present invention relates to an interphone device for use in ships, the interphone device comprising: an input/output unit to which a voice is input or from which a voice is output; a transmission/reception circuit unit which receives the voice from the input/output unit and provides a first signal obtained by encoding and modulating the received voice; and an antenna which is attached to the metal hull of the ship, forms an electromagnetic field in the metal hull, and carries the first signal received from the transmission/reception circuit unit by the electromagnetic field, so as to propagate the first signal.

The present invention relates to an interphone device for use in ships, the interphone device comprising: an input/output unit to which a voice is input or from which a voice is output; a transmission/reception circuit unit which receives the voice from the input/output unit and provides a first signal obtained by encoding and modulating the received voice; and an antenna which is attached to the metal hull of the ship, forms an electromagnetic field in the metal hull, and carries the first signal received from the transmission/reception circuit unit by the electromagnetic field, so as to propagate the first signal.