FILM BATTERY FOR PORTABLE DATA CARRIERS HAVING AN ANTENNA FUNCTION

摘要

The aim of the invention is to obtain microwave transponders having a wide range with a small overall height that complies with chip card standards. To this end, the invention involves the use of a film battery. The film battery (40) simultaneously functions as an antenna and is configured as a patch antenna with appropriate dimensions. Alternatively, the film battery (40) can function as a support for a patch antenna (28). The cathode surface (30) of the film battery (40) functions as a large-dimensioned ground surface. It supports an inlet (26) on which a copper lamination is provided in the form of a patch antenna (28) that has a defined length or width ( lambda /2) according to the provided operating frequency.