Removable card for a contactless communication, its utilization and the method of production
First Claim
1. A removable card adapted for insertion into a memory extension slot of a mobile communication device for creation of a contactless communication channel, the card comprising:
- a flat card body made from an electrically nonconductive material, said card body having a first and a second external nonconductive surface on opposite sides of the card body;
an antenna made of at least one thread of a conductive path on the first external nonconductive surface of the card body, said antenna adapted to resonate at a resonant frequency;
a ferromagnetic material layer on at least said first external nonconductive surface of the card body and at least partially covering the antenna on an outer side of antenna relative to the card body; and
electrical contacts disposed on the first external nonconductive surface of the card body and adapted for connection in said slot of said mobile communication device,wherein the ferromagnetic material layer is located on a portion of the first external nonconductive surface of the card body that is opposite to the portion of the card body on which the contacts are disposed, and wherein the ferromagnetic material layer extends to a margin of the first external nonconductive surface of the card body.
3 Assignments
0 Petitions
Accused Products
Abstract
Removable card for a contactless communication contains an antenna (4) formed of threads (10) placed on the external surface of the body (1) of the card and covered by a layer (7) of a ferromagnetic material. In advantageous adjustment the antenna (4) contains on one area (2) of the card eight threads (10) and both areas (2) of the card are covered by a layer (7) of a ferritic foil. The antenna (4) is connected to the series with element (12) with capacity and the resistance (11) on the other side. Resonant circuit is tuned in for the final frequency from 13.0 to 15.0 MHz. The signal from the antenna (4) is read between the first and the second thread (10) from the side of the element (12) with capacity. The production method for the antenna on the body of the removable card resides in the fact that a groove of the conductive path (5) shape is dredged on the surface of the card'"'"'s body (1), the groove is filled with a conductive material and a ferromagnetic material layer (7) is applied on the surface of the area (2) covering the antenna (4).
-
Citations
28 Claims
-
1. A removable card adapted for insertion into a memory extension slot of a mobile communication device for creation of a contactless communication channel, the card comprising:
-
a flat card body made from an electrically nonconductive material, said card body having a first and a second external nonconductive surface on opposite sides of the card body; an antenna made of at least one thread of a conductive path on the first external nonconductive surface of the card body, said antenna adapted to resonate at a resonant frequency; a ferromagnetic material layer on at least said first external nonconductive surface of the card body and at least partially covering the antenna on an outer side of antenna relative to the card body; and electrical contacts disposed on the first external nonconductive surface of the card body and adapted for connection in said slot of said mobile communication device, wherein the ferromagnetic material layer is located on a portion of the first external nonconductive surface of the card body that is opposite to the portion of the card body on which the contacts are disposed, and wherein the ferromagnetic material layer extends to a margin of the first external nonconductive surface of the card body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A removable card adapted for insertion into a memory extension slot of a mobile communication device for creation of a contactless communication channel, the card comprising:
-
a flat card body made from an electrically nonconductive material, said card body having a first and a second external nonconductive surface on opposite sides of the card body; an antenna made of at least one thread of a conductive path on the first external nonconductive surface of the card body, said antenna adapted to resonate at a resonant frequency; a ferromagnetic material layer on at least said first external nonconductive surface of the card body and at least partially covering the antenna on an outer side of antenna relative to the card body; and a plurality of threads disposed spirally on the first external nonconductive surface of the card body and a plurality of electrical contacts disposed on the first external nonconductive surface of the card body, wherein the threads are contained within a rectangular perimeter, the perimeter defining a first side that extends into a margin of the first external nonconductive surface of the card body that is opposite a portion of the card body on which the contacts are disposed. - View Dependent Claims (24)
-
-
25. A method of forming an antenna on a removable card adapted for insertion into a memory extension slot of a mobile communication device for creation of a contactless communication channel, the card having a microprocessor and a flat card body made from an electrically nonconductive material, said card body having a first and a second external nonconductive surface on opposite sides of the card body, the method comprising:
-
forming a groove into the first external nonconductive surface of the card body; filling the groove with an electrically conductive material to form an antenna in a conductive path on the first external nonconductive surface of the card body, the antenna adapted to resonate at a resonant frequency; electrically connecting the antenna to the microprocessor; at least partially covering the antenna with a ferromagnetic foil that is applied to the first external surface of the card body so as to at least partially cover the antenna on an outer side of the antenna relative to the card body; and forming electrical contacts on the first external nonconductive surface of the card body, said electrical contacts being adapted for connection in said slot of said mobile communication device, wherein the ferromagnetic foil is located on a portion of the first external nonconductive surface of the card body that is opposite to the portion of the card body on which the contacts are disposed, and wherein the ferromagnetic foil extends to a margin of the first external nonconductive surface of the card body. - View Dependent Claims (26, 27, 28)
-
Specification