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. 18, 2006
Filed:
Nov. 15, 2004
Wolfgang Mahler, Stuttgart, DE;
Friedrich Landstorfer, Stuttgart, DE;
Jürgen Motzer, Gengenbach, DE;
Wolfgang Mahler, Stuttgart, DE;
Friedrich Landstorfer, Stuttgart, DE;
Jürgen Motzer, Gengenbach, DE;
VEGA Grieshaber KG, , DE;
Abstract
The present invention relates to a planar antenna () for excitation of the TE01-mode of an electromagnetic wave and adapted to be arranged in a waveguide tube (). The planar antenna comprises a substrate () of dielectric material having a first surface () intended to face towards a filling good surface and a second surface () facing in an opposite direction. A first group () of a plurality of dipole arms () is arranged on the first surface () or the second surface () on a perimeter of a circle with a predetermined radius. A second group () of a plurality of dipole arms () is arranged on the first surface () or the second surface () on the perimeter of the circle with the predetermined radius. The dipole arms () of the first group () extend in a first direction and the dipole arms () of the second group () extend in a direction opposite the first direction. Furthermore, the present invention relates to an antenna system comprising a cylindrical waveguide tube () having a bottom plate () and a tube portion () and a planar antenna () as mentioned above.