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:
Jul. 24, 2001
Filed:
Feb. 02, 2000
Roland Müller, Steinen, DE;
Thomas Malzahn, Lörrach, DE;
Karl-Peter Hauptvogel, Bartenheim, FR;
Dietmar Birgel, Schopfheim, DE;
Other;
Abstract
The invention relates to a device (,) for determining the filling level in a container (,). Moreover, the invention also relates to a method for fastening an input coupling unit (,) on the antenna (,), the antenna (,) being used in the device (,) according to the invention. It is the object of the invention to provide overvoltage protection for an antenna (,), and a method for producing such an antenna (,). The object is achieved by virtue of the fact that the antenna (,) comprises at least two dielectric layers (,). The first dielectric layer (,) has at least one cutout (,) for holding the input coupling unit (,). The second dielectric layer (,) bears an antenna structure (,) on the side facing the first dielectric layer (,) and has a conductive coating (,) with openings (,) on the side averted from the first dielectric layer (,). Contacts (,) are provided in the second dielectric layer (,) and the conductive layer (,) which connect the input coupling unit (,) to the conductive coating (,). The region of space defined by the contacts (,), the conductive coating (,) and the antenna housing (,) forms a Faraday cage.