ULTRA-LOW-FREQUENCY AND EXTREMELY LOW-FREQUENCY COMMUNICATION SYSTEM WITH DEEP-LOADED AND REMOTE OBJECTS Russian patent published in 2020 - IPC H04B13/02 G01V3/12 

FIELD: communication equipment.

SUBSTANCE: invention can be used in systems of ultra-low-frequency and extremely low-frequency ranges with deep-loaded and remote objects. For this cable control system cable is connected to control system of transmitting ULF—ELF antenna, protected against spreading currents in the ground by the earthing terminal of the central branch based on arrangement of the control system of the transmitting ULF—ELF antenna between two converters in the central branch, not having spreading currents of their own earth conductors; transmitting system consisting of: central branch and additional five branches, connected in series with central branch through branch switch, information unit of control system of transmitting ULF—ELF antenna containing five data transmission channels, besides, in each data transmission channel two generators are tuned to two frequencies, thus, information transfer is carried out by two-frequency method. Use of the device will make it possible to solve the problem of protection of cable control line and communication from spreading of currents of terminal earthing switch in ground of central branch, as well as problem of protection of control system of transmitting ULF—ELF antenna.

EFFECT: technical result consists in providing electromagnetic compatibility of radiation of electromagnetic fields of a ULF—ELF antenna "Communication systems___" with control and communication cable main line, as well as with control system of transmitting ULF—ELF antenna.

16 cl, 18 dwg