Passive radio transmission device
AssigneeAEG Identifikationssysteme GmbH
InventorNorbert Knapich
Life of this patent
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Abstract
A passive radio transmission device is arranged on a front and a back of an electrically conductive carrier plate, wherein the radio transmission device includes, on the front of the carrier plate, a first film having a first antenna and having a microchip coupled to the first antenna and, on the back, a second film having a second antenna, wherein the first film is coupled to the second film via a flexible web, routed around an end face of the carrier plate, that connects the front to the back, so that the second antenna is connected to the first film via at least one connecting line running along the web in order to transmit information from the microchip using both the first antenna and the second antenna, wherein the first film, the second film and the web are combined as one component.
Claims14
A mechanical key comprising a passive radio transmission device disposed on a front side and a rear side of an electrically conductive carrier plate that is a key bow of the mechanical key,
- wherein the radio transmission device comprises, on the front side of the carrier plate, a first foil having a first antenna and a microchip coupled with the first antenna and, on the rear side, a second foil having a second antenna,
- wherein the first foil is connected with the second foil via a flexible web, which is routed around an end face of the carrier plate connecting the front side with the rear side, so that the second antenna is connected with the first foil via at least one connecting line running along the flexible web, in order to transmit information from the microchip both on the basis of the first antenna and of the second antenna, and
- wherein the first foil, the second foil and the flexible web are combined as one component part.
A method for retrofitting a mechanical key, comprising the steps:
- Provision of a mechanical key, which with respect to its function is adapted to a locking system,
- Provision of a passive radio transmission device, which comprises a first foil having a first antenna and a microchip coupled with the first antenna, and a second foil having a second antenna, wherein the first foil is connected to the second foil via a flexible web,
- Disposing the first foil of the radio transmission device on a front side of an electrically conductive key bow of the mechanical key,
- Disposing the second foil of the radio transmission device on the rear side of the key bow of the mechanical key, wherein the first foil is connected with the second foil via a flexible web, which is routed around an end face of the mechanical key connecting the front side with the rear side, so that the second antenna is connected with the first foil via at least one connecting line running along the flexible web, in order to transmit information from the microchip both on the basis of the first antenna and of the second antenna, and
- Programming the microchip of the passive radio transmission device with an access authorization.
Dependencies are inferred from the claim text.