US 12,147,864 B2
Method for manufacturing a metal chip card with mini relay antenna
Lucile Mendez, Peypin (FR); Frédérick Seban, Auriol (FR); Claude Colombard, Pertuis (FR); Arek Buyukkalender, Marseilles (FR); and Jean-Luc Meridiano, Tourves (FR)
Assigned to THALES DIS FRANCE SAS, Meudon (FR)
Appl. No. 17/641,189
Filed by THALES DIS FRANCE SAS, Meudon (FR)
PCT Filed Sep. 8, 2020, PCT No. PCT/EP2020/075113
§ 371(c)(1), (2) Date Aug. 9, 2022,
PCT Pub. No. WO2021/048148, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 19306078 (EP), filed on Sep. 9, 2019.
Prior Publication US 2023/0237305 A1, Jul. 27, 2023
Int. Cl. G06K 19/06 (2006.01); G06K 19/077 (2006.01)
CPC G06K 19/07773 (2013.01) [G06K 19/0772 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of manufacturing a radio frequency smart card (1A), said method comprising the steps of:
forming a card body comprising a relay antenna and an insulating cover layer on at least one main face of the card,
arranging a module equipped with a radiofrequency module antenna, on the card body facing the relay antenna for radiofrequency coupling; and
forming a metal insert in said card body, said insert extending up to the edges of the card and comprising a space permeable to the radiofrequency field opening on at least one of the two main faces of the insert and comprising said relay antenna inside and/or opposite this space,
wherein said relay antenna has a total area equal to three or four times the area of the antenna of the module;
wherein the substrate of the relay antenna with said total area is inserted into said permeable space to enhance radio frequency signals.