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:
Jun. 03, 2003
Filed:
Apr. 12, 2000
Heinz Lindenmeier, Planegg, DE;
Rainer Kronberger, Hohenkirchen, DE;
Jochen Hopf, Haar, DE;
Leopold Reiter, Gilching, DE;
Fuba Automotive GmbH & Co. KG, Bad Salzdetfurth, DE;
Abstract
A radiotelephone system for motor vehicles, having a group antenna system with a plurality of antenna elements, and a mobile radiotelephone with a high-frequency input for receiving radio signals. The group antenna system contains controllable phase and/or amplitude adjusting elements, which are set so that a directed reception with a main receiving direction is available. The controllable phase and/or amplitude adjusting elements are controlled by a processor for tracking the main receiving direction azimuthally in the direction of a fixed station with the help of a tracking signal. Controllable switching-elements for reversing antenna signals for diversity reception are integrated in the signal paths of the group antenna system so that the azimuthal main direction of reception is tracked with a defined tracking by setting a combination of the switching positions of the controllable switching elements. Thus, the antenna reception patterns are changed when the switches of the controllable switching elements are changed, and a changed received signal is available in each case on the high-frequency input of the mobile radiotelephone. When a reception interference is detected, a diversity processor selects from the possible combinations of switching positions, another combination to reduce or eliminate interference.