3results about "Subaqueous/subterranean adaption" patented technology

It provides an antenna suitable for underwater communications. [Solution] The dipole antenna for underwater communication comprises a first conductor having a first length and a first end not covered with a feed terminal and a first insulating material, and covered with the first insulating material except for the first end, and a second conductor having a second length and a second end not covered with a feed terminal and a second insulating material, and covered with the second insulating material except for the second end.

This utility model belongs to the field of underwater cable antenna erection engineering technology, and specifically relates to a zero-buoyancy cable antenna depth-fixing, shape-fixing, and orientation device. It meets the requirements for depth-fixing, shape-fixing, and orientation of underwater cable antennas, is simple, easy to use, and low-cost, and is suitable for deploying fixed underwater cable antennas in nearshore areas. It includes a fixed depth-fixing mechanism and an adaptive depth-fixing mechanism installed in the ocean. The fixed depth-fixing mechanism includes a first fixed anchor placed on the seabed, connected to a horseshoe buckle via a first cable I. Above the horseshoe buckle, a first buoy floating on the sea surface is connected via a first depth-fixing cable, and below the horseshoe buckle, a first counterweight is connected via a first cable II. The adaptive depth-fixing mechanism includes a second fixed anchor placed on the seabed, connected to a second counterweight via a second cable passing through a pulley. Above the pulley, a second depth-fixing cable is connected, and the second depth-fixing cable is connected to a second buoy floating on the sea surface. A horizontally taut cable antenna is connected between the horseshoe buckle and the pulley.

A marker device embodiment may include separate concentrically-oriented receive and transmit antenna elements coupled to an ASIC which includes electronics to receive an input signal at a first frequency from a transmitter, convert the input signal to a power supply to power the electronic circuit, generate, in response to the input signal, an output signal at a second frequency different from the first frequency, and provide the output signal, via the transmit antenna element, to an above-ground receiver for assistance in determining the location of a buried utility.