The inventors explained that the prototype antenna can transmit a signal up to 100 meters, which was previously impossible for miniature devices.
Oleg Sokolov, a researcher in the Department of Radio Equipment Design and Technology at the Institute, said: "This innovation is based on a composite material consisting of a piezoelectric material and a piezomagnetic material. When an alternating electric voltage is applied to the first material, it contracts and expands, causing vibrations, and at the same time the magnetic material attached to it is deformed, which leads to a change in its magnetic properties. This results in an alternating magnetic field that generates very low-frequency radiation in the surrounding medium."
Scientists have pointed out that these electromagnetic waves can penetrate water to great depths, whereas previously generating this radiation required massive structures. Thanks to the new material, it is now possible to generate very low frequency (VLF) radiation using small-scale devices.
Researchers believe this innovation represents an important step towards developing underwater mobile communication technologies, and these devices can be used to control underwater robots and vehicles and to communicate with divers.
