LOW-FREQUENCY ANTENNA Russian patent published in 2022 - IPC H01Q3/00 H01Q1/36 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio equipment and is used to emit electromagnetic oscillations on communication lines of low-frequency radio wave ranges and when deploying in places not adapted for building capital antenna structures. The technical result is achieved by proposing a low-frequency antenna deployed by means of a medium-sized tethered multicopter operating in the hovering mode, wherein the multicopter is connected with the main SPC cable and two additional SPC cables via an insulator, wherein one of the cables is passive without a galvanic connection and is intended for supplying power to the multicopter, the length of all three SPC cables is comparable with 0.25λ, the lower ends of the SPC cables are connected with the conductors of the electric counterweight separately and spaced from each other by an angle of 120 degrees and from the point of connection of the radially diverging conductors of the electric counterweight by a distance of 0.025λ; the lower end of the main SPC cable acts as one output electrode of the antenna, and the second electrode is a point of connection of the power supply with the conductor of the counterweight whereto the main SPC cable is connected.

EFFECT: expanded bandpass, ensured long-term operation, and reduced weight of the multicopter.

1 cl, 3 dwg