The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 1999
Filed:
Mar. 05, 1997
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An antenna coil, in particular for a contactless smart card, includes coil turns formed of thin conductor tracks having first and second ends. The first end of a respective one of the conductor tracks is electrically conductively connected to the second end of an adjacent one of the conductor tracks. The conductor tracks include first and last conductor tracks, and the first end of the first conductor track and the second end of the last conductor track form coil connections. The conductor tracks are disposed in parallel on a flexible, non-conductive carrier strip. The carrier strip has bends and forms a polygon containing the connected ends of the conductor tracks. The bends are guided through approximately 180.degree., and the coil turns lie approximately in the same plane.