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:
Aug. 01, 2006
Filed:
Jan. 11, 2001
Achim Ratzel, Bempflingen, DE;
Dirk Wendt, Dettingen, DE;
Peter Schaich, Kohlberg, DE;
Hirschmann Electronics GmbH & Co. KG, Neckartenzlingen, DE;
Abstract
The invention relates to an antenna system () comprising several antennae (), which can be connected to at least two receivers (') via a combination unit. According to the invention, a signal processing unit () for evaluating the output signals of the receivers (′) and a control unit () are provided, by means of which at least one of the antennae can be switched to transmit mode in order to conduct a self-test. These antennae () transmit test signals with a test frequency that is pre-set by a first receiver (). Said test signals are fed into at least one other antenna () that, via the combination device (), is connected to the second receiver (′) whose frequency is tuned to the test frequency. In order to conduct the self-test, the receiving levels of the second receiver (′) are recorded as actual values and compared with predetermined set values. This results in the realization of an antenna system in which a function check is conducted with the least possible amount of complexity.