FIELD: radio engineering, communication.
SUBSTANCE: plug-in card for wireless communication includes an antenna consisting of fibres arranged in the housing of the card and coated with a layer of ferromagnetic material. When optimising the system, the antenna includes eight fibres on one portion of the card and both portions of the card are coated with a layer of a ferrite film. The antenna is connected in series with a storage element and resistance at other side. The resonance circuit is tuned to a final frequency ranging from 13.0 to 15.0 MHz. The antenna signal is read out between the first and second fibres on the side of the storage element. The method of making the antenna on the housing of the card is characterised by that a recess for a conducting track 5 made on the surface of the housing of the card, filled with conducting material and a ferromagnetic layer which covers the antenna is deposited on the surface of the portion.
EFFECT: establishing a wireless connection between a mobile communication device for payment operations using a mobile telephone, particularly for communication with a terminal.
25 cl, 7 dwg
