FIELD: physics.
SUBSTANCE: invention relates to emitter of non-stationary magnetic field. Emitter is configured to be mounted as a miniaturized antenna in a mobile communication device, preferably for installation on flat carrier comprising elongated core (1) with permeability greater than 1, wire (4) forming two turns of winding (2) wound on core (1). And radiator forms a non-contact communication channel NFC or RFID, in which the signal transmitted from the emitter is received via a standard NFC or RFID receiving means. Core (1) is made of ferritic material. Coils of winding (2) are placed on core (1) in one or two layers. Moreover, the turns of winding (2) are placed on core (1) tightly to each other from the condition of minimizing the magnetic field emission from core (1) beyond its ends. In this case, the effective width W of one winding turn (2) is made equal to 0.25 to 1.75 times radius of core (1) with circular cross section or equal to 0.25 to 1.75 times equivalent radius for other forms of core (1).
EFFECT: emitter of nonstationary magnetic field.
33 cl, 26 dwg, 11 ex
