Antenna for chip card production
The present invention relates to an antenna arrangement ( 10 ) for the production of chip cards, in particular chip cards used in the UHF frequency range, having a substrate and a plurality of antenna conductor structures ( 11 ) formed on the substrate using a coating method, the antenna conductor structures having a terminal arrangement ( 24 ) for connecting the antenna conductor structures to a chip, wherein the substrate is formed as a substrate sheet ( 12 ), and the antenna conductor structures are disposed on the substrate sheet in a matrix arrangement ( 13 ) having a plurality of columns and rows.
1. An antenna arrangement for the production of chip cards, in particular chip cards used in the UHF frequency range, said arrangement comprising:
a substrate; and
a plurality of antenna conductor structures formed on the substrate, the antenna conductor structures having a terminal arrangement for connecting the antenna conductor structures to a chip, wherein the substrate is formed as a substrate sheet, and the antenna conductor structures are disposed on the substrate sheet in a matrix arrangement having a plurality of columns and rows, wherein the antenna conductor structures include at least one dipole arrangement, said at least one dipole arrangement including a first antenna strand and a second antenna strand, said first antenna strand extending longitudinally along a column separation line and said second antenna strand extending along a row separation line, said column separation line and said row separation line separating the antenna conductor structures and intersecting in an intersection zone, said first antenna strand and said second antenna strand being connected in said intersection zone via a coupling conductor section.
2. The antenna arrangement according to claim 1 , in which the terminal arrangements for connecting the antenna conductor structures to the chip are formed as a loop dipole having a coupling conductor section which is disposed in parallel to the coupling conductor section of the assigned antenna conductor structure.
3. The antenna arrangement according to claim 1 , in which the terminal arrangements feature at least two planarly designed terminal contacts extending over substrate recesses and being open towards a substrate rear side.
4. The antenna arrangement according to claim 3 , in which the terminal contacts are applied to an antenna substrate in the form of a material coating using a coating method and are formed integrally with coupling conductor sections of the terminal arrangements.
5. The antenna arrangement according to claim 4 , in which the antenna conductor structures and the terminal arrangements are formed of a congruent material coating.
6. The antenna arrangement according to claim 1 , in which the terminal arrangements are formed of aluminum or of an alloy containing aluminum.
7. The antenna arrangement according to claim 1 , in which the terminal arrangements are formed of copper or of an alloy containing copper.
8. A laminate structure for the production of chip cards, comprising an antenna arrangement according to claim 1 , in which the terminal arrangements and the dipole arrangements of the antenna conductor structures are formed on separate substrate sheets which are planarly connected to one another for the production of the antenna conductor structures.