RFID tag
The present invention relates to an RFID tag ( 11 ) that has a front side and a back side. The RFID tag ( 11 ) comprises a printable surface ( 13 ), an antenna ( 2 ) and an integrated circuit on a chip ( 4 ) electrically connected to the antenna ( 2 ). The RFID tag comprises a dielectric substrate ( 1 ), a dielectric layer ( 7 ) and a ground plane ( 3 ) under the substrate ( 1 ). The substrate ( 1 ) has a first side and a second side. The substrate ( 1 ) comprises an antenna ( 2 ) on the first side of the substrate ( 1 ). The antenna ( 2 ) and the ground plane ( 3 ) are configured to overlap. The substrate ( 1 ) is folded over at least one edge ( 7 a; 7 b ) of the dielectric layer ( 7 ) in such a manner that the ground plane ( 3 ) is configured to cover the antenna ( 2 ) on the back side of the RFID tag ( 11 ).
1. An RFID tag ( 11 ) having a front side and a back side, the RFID tag ( 11 ) comprising:
a printable surface on the front side of the RFID tag;
a dielectric substrate, the dielectric substrate has a first side and a second side opposite to the first side in the thickness direction of the dielectric substrate, the dielectric substrate comprises on the first side of the substrate an antenna and an integrated circuit on a chip electrically connected to the antenna and on the second side of the substrate a ground plane, the antenna on the first side and the ground plane on the second side are configured to overlap; and,
a dielectric layer;
wherein the dielectric substrate is folded over at least one edge of the dielectric layer from one side of the dielectric layer to the other side of the dielectric layer in such a manner that the antenna extends over the fold and the ground plane is configured to cover the antenna on the back side of the RFID tag.
2. The RFID tag according to claim 1 , wherein the substrate is folded over two opposite edges of the dielectric layer.
3. The RFID tag according to claim 1 , wherein the dielectric layer is a foam.
4. The RFID tag according to claim 1 , wherein the printable surface is a paper or plastic layer.
5. The RFID tag according to claim 1 , wherein the printable surface is the second side of the substrate facing to the front side of the RFID tag.
6. The RFID tag according to claim 5 , wherein the second side of the substrate comprises a lacquer or a coating.
7. An RFID tag having a front side and a back side, the RFID tag comprises:
a printable surface on the front side of the RFID tag;
a dielectric substrate, the dielectric substrate has a first side and a second side opposite to the first side in the thickness direction of the dielectric substrate, the dielectric substrate comprises on the first side of the substrate an antenna and an integrated circuit on a chip electrically connected to the antenna;
a dielectric layer; and
a ground plane on a ground plane substrate on a side of the second side of the dielectric substrate;
wherein the dielectric substrate is folded over at least one edge of the dielectric layer from one side of the dielectric layer to the other side of the dielectric layer in such a manner that the antenna extends over the fold and the antenna on the first side of the substrate and the ground plane are configured to overlap and the ground plane is configured to cover the antenna on the back side of the RFID tag.
8. The RFID tag according to claim 7 , wherein the substrate is folded over two opposite edges of the dielectric layer.
9. The RFID tag according to claim 7 , wherein the dielectric layer is a foam.
10. The RFID tag according to claim 7 , wherein the printable surface is a paper or plastic layer.
11. The RFID tag according to claim 7 , wherein the printable surface is the second side of the substrate facing to the front side of the RFID tag.
12. The RFID tag according to claim 11 , wherein the second side of the substrate comprises a lacquer or a coating.
13. An RFID tag having a front side and a back side, the RFID tag comprises:
a printable face layer of paper or plastic on the front side of the RFID tag;
a dielectric substrate, the dielectric substrate has a first side and a second side opposite to the first side in the thickness direction of the dielectric substrate, the dielectric substrate comprises on the first side of the substrate an antenna and an integrated circuit on a chip electrically connected to the antenna and on the second side of the substrate a ground plane, the antenna on the first side and the ground plane on the second side are configured to overlap; and
a dielectric layer;
wherein the dielectric substrate is folded over at least one edge of the dielectric layer from one side of the dielectric layer to the other side of the dielectric layer in such a manner that the antenna extends over the fold and the ground plane is configured to cover the antenna on the back side of the RFID tag.
14. The RFID tag according to claim 13 , wherein the substrate is folded over two opposite edges of the dielectric layer.
15. The RFID tag according to claim 13 , wherein the dielectric layer is a foam.