Smartrac I.p. B.v.

Sokymat S.a.

Egon Konopitzky

Reinhard Jurisch

Peter Peitsch

Martin Miehling

Philippe Held

Jan Wendisch

The present invention relates to an antenna module () for producing a transponder, wherein the antenna module comprises an antenna conductor arrangement disposed on a substrate surface () of a substrate () and having an antenna conductor () for contacting with a chip (), wherein the antenna conductor () forms a first antenna part () having a first terminal end on a first partial area () of the substrate surface, and with a second terminal end extends to a second partial area () of the substrate surface to form a second antenna part (), wherein antenna connection contacts () are disposed on the respective partial areas, such that the antenna connection contacts can be brought into an overlapping position for producing an electrically conductive connection by swiveling the partial areas with respect to each other.

Antenna module for producing a transponder, and a transponder

A transponder unit which can be integrated in a transport unit or a card or the like. The transponder unit includes, in addition to an encapsulated transponder of an integrated circuit, an aerial winding having a resistance Rand a capacitor parallel thereto and having a capacitance C. A closed coupling circuit of secondary winding is coupled with the aerial winding by a mutual inductance Mand a substantially larger primary winding in series with the secondary winding and having fewer turns, for example only one turn. To achieve almost optimum energy transfer between a reading device and the transponder and to increase the permissible reading distance, the mutual inductance Mis adjusted to comply with the relationship M=&#x221a;{square root over ( )}[R/&#x3c9;) (L+L+2M)], where &#x3c9;=1/(LC) is true for the receiving frequency &#x3c9; of the transponder and Land Lare the inductances of the primary winding and of the secondary winding and Mis their mutual inductance.

Transponder unit and transport unit and card

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Chatel-St-Denis, Switzerland

Egon Konopitzky