Patent ID: 8576124

Claim:
An RFID transponder comprising: an antenna; a chip comprising at least one transmission and reception circuit as well as a memory; a dielectric carrier element which is covered on a first surface at least sectionally with a structured first metallization and which is covered on a second surface disposed opposite the first surface at least sectionally with a second metallization; the first and second metallizations being jointly electrically conductively connected, thereby forming the antenna, the first metallization being structured such that it forms two electric terminals of the antenna arranged on the first surface of the dielectric carrier element, and the chip can be or is electrically contacted via these two terminals and is positionable or is arranged on the first surface and/or is positionable or is arranged at least sectionally integrated into this surface; and an adaptation network at least partly formed by the structuring of the first metallization and adapting the input impedance of the antenna in a conjugate complex manner to the impedance of the chip, the adaptation network having a first capacitance C ser which is connected in series to the chip and a second capacitance C shunt which is connected in parallel to this series connection of the chip and the first capacitance C ser .