Antenna Construction, for example for an RFID Transponder System

摘要

The invention relates to an antenna construction for an RFID chip for long ranges, which comprises a substrate,
an antenna of conducting material supported by the substrate, the antenna is formed as a magnetic dipole, and coupling means for coupling the antenna to a circuit, which coupling means are formed by overlapping extensions of the antenna conductor. In accordance with the invention the antenna is formed of at least three sections each of different width W1, W2 and W3, where the sections are widest and the section is the narrowest W2 with an optimized shape.

主权项

1. Antenna construction for an RFID chip for long ranges, which comprises
a substrate, an antenna structure of conducting material supported by the substrate, comprising a radiator in a form of a magnetic dipole, and coupling means for coupling the antenna structure to a circuit, which coupling means are formed by overlapping extensions of the antenna conductor, andwherein
the conducting material is formed of at least three sections each of different width W1, W2 and W3, where the sections forming the actual coupling means are widest and the section functioning as connecting section between the sections forming coupling means is the narrowest.