FIELD: electrical communication engineering.
SUBSTANCE: invention relates to communication, in particular, near-field magnetic coupling, and is intended for wireless information transmission by modulating low-frequency magnetic fields, and can be used for communication channel arrangement with various underground, underwater and other objects. Device consists of transmitting and receiving parts, magnetic field generated by transmitting antenna is registered by receiving antenna, in the form of a weak magnetic field sensor based on a microstrip resonator with thin magnetic films, the weak magnetic field sensor compensation coil is in form of a printed inductance on several layers of the multilayer printed circuit board and is located under magnetic film, wherein all elements of sensor, except for sensitive element, are located inside electromagnetic shield.
EFFECT: technical result consists in improvement of near-field magnetic coupling system resistance to electric noises, as well as increase in the system noise immunity when operating under narrow-band interference conditions.
1 cl, 3 dwg
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