RU2001126717A - ANTENNA WITH VARIABLE CAPACITY FOR CONNECTION - Google Patents

Claims (11)

1. The antenna for connection, connected to the transceiver of electromagnetic waves containing one or more built-in capacitors, the antenna for connection contains at least one turn made by screen printing on a substrate consisting of an insulating dielectric material, characterized in that it contains a capacitor made by screen printing on a substrate connected in parallel with the specified antenna, providing a decrease in capacitance, which is determined by the built-in capacitor (s), while ezultiruyuschaya capacitance forms with said coil of the resonant circuit. 2. The antenna according to claim 1, in which the capacitor consists of at least two plates of ink applied by screen printing and separated by an insulating tape consisting of dielectric ink, which is also applied by screen printing. 3. The antenna according to any one of the preceding claims 1 and 2, in which the dielectric base forming the substrate is made of plastic, paper or fiberglass impregnated with a thermosetting polymer or a polymer that shrinks under the influence of UV radiation. 4. The antenna according to any one of the preceding claims 1 to 3, in which the ink used to perform screen printing of the turns and plates of the capacitor are polymer conductive inks with conductive elements inserted therein. 5. The antenna according to any one of claims 2 to 4, in which the insulating tape is made of at least two layers of dielectric ink, giving it highly insulating properties. 6. The antenna according to claim 5, in which the dielectric ink forming two layers of insulating tape are polymer inks that shrink under the influence of UV radiation. 7. A method of manufacturing an antenna for interaction according to any one of the preceding claims 1 to 6, which consists in screen printing of at least one turn of the antenna, the bottom plate of the capacitor, the contact pads of said antenna for connection with a microcircuit or module, and connect the antenna to the bottom plate of the capacitor by depositing conductive ink on a substrate, screen print the capacitor insulating tape by depositing dielectric ink, and cover the bottom plate of the condensate ora, screen printing the upper plate of the capacitor on top of the insulating tape and connect the antenna to the upper plate of the capacitor. 8. A contactless smart card containing a substrate having at least one antenna for connection, made according to any one of claims 1 to 6, connected to a microcircuit or module. 9. The contactless smart card of claim 8, wherein the chip or module does not have an internal capacity. 10. Contactless smart card according to any one of paragraphs.8 and 9, in which the substrate is placed between two card bodies that are attached to each side of the substrate, giving the smart card rigidity. 11. The contactless smart card of claim 10, wherein the card body is attached to the antenna substrate by hot or cold lamination.