Patent ID: 7420455

Claim:
An electronic communication system, having at least one base station having at least one antenna unit, in particular in coil form, which base station is arranged in particular on or in an object to be secured against unauthorized use and/or against unauthorized access on or in a means of transport or on or in an access system, and at least one transponder station, in particular in data-carrier form, having at least one antenna unit, in particular in coil form, which transponder station may in particular be carried with him by an authorized user and/or is designed to exchange data signals with the base station, in which case, by means of the data signals the authorization for use and/or access can be determined and/or the base station can be controlled accordingly, characterized in that there is arranged in the base station at least one first delay element for setting a defined, and in particular substantially constant, signal transit time within the base station, wherein the first delay element comprises a first multistage element with a first plurality of individual delay stages and/or there is arranged in the transponder station at least one second delay element for setting a defined, and in particular substantially constant, signal transit time within the transponder station, wherein the second delay element comprises a second multistage element with a second plurality of individual delay stages.