FLEXIBLE ELONGATED HYDROACOUSTIC DIGITAL CABLE ANTENNA Russian patent published in 2011 - IPC G01S7/52 

FIELD: physics.

SUBSTANCE: proposed antenna comprises load bearing cable, power supply cable and communication cable, sensitive elements and electronic units arranged spaced along antenna. Note here that each electronic unit is connected to power supply cable and comprises low-noise amplifier, ADC and data preparation and transmission units, all being arranged on pcb. Outputs of low-noise amplifiers are connected with appropriate outputs of sensitive elements while outputs of data preparation and transmission units are connected with communication line. The latter is provided with sections of chord round-core elements arranged along the axis. Load bearing element is located at antenna center. Sensitive elements are made up of long cable sections made from elastic piezo electric material with length equal to that of chord elements. Power supply and transmission cables are made up of two twisted conductors. Note here that power supply cable, communication cable, sensitive element cable and cores of card element feature diametre equal to that of load bearing element and are arranged uniformly and twisted around thereof. Electronic units PCBs are arranged between chord elements and sections of cable from elastic piezo electric material, while all antenna elements are encased in outer sealing cable envelopment.

EFFECT: reduced hydrodynamic interferences and ease of use.

2 cl, 2 dwg