Hirschmann Electronics Gmbh & Co Kg

Peter Schaich

Dirk Wendt

Achim Ratzel

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 (&#x2032;) 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 (&#x2032;) whose frequency is tuned to the test frequency. In order to conduct the self-test, the receiving levels of the second receiver (&#x2032;) 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.

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Kohlberg, Germany

Peter Schaich