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:
Oct. 03, 2000
Filed:
Apr. 08, 1998
Werner Speldrich, Backnang, DE;
Uwe Rosenberg, Backnang, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A simply made and very broad band directional coupler includes a hollow middle section (CS) provided with an empty interaction space having two ends, one pair of hollow guides (H1, H3) coupled to one end of the interaction space, another pair of hollow guides coupled to another end of the interaction space and a coupler diaphragm (KB1, KB2, KB3, KB4) provided between the interaction space (KR) and each individual hollow guide coupled to it. Higher wave types (are consisting of TE11 and TM11 modes) propagated in the interaction space (KR) as well as a fundamental wave type (TE 10). Furthermore a height (h) of the interaction space is at least 2.5 times the smallest height (b) of a coupling diaphragm (KB1, KB2, KB3, KB4) so that a comparatively broad band directional coupler results.