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Antenna system

  • US 20040058690A1
  • Filed: 09/11/2003
  • Published: 03/25/2004
  • Est. Priority Date: 11/20/2000
  • Status: Active Grant
First Claim
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1. Antenna system (1) with several antennae (2) which can be connected to at least two receivers (4, 4

  • ) in given combinations via a combination unit, with a signal processing unit (5) for evaluation of the output signals of the receivers (4, 4

    ) and with a control unit (10), by means of which at least one of the antennae (2) can be switched to transmitting operation to carry out a self-test, this antenna (2) with a test frequency dictated via a first receiver (4) sending test signals which are coupled into at least one other antenna (2) which is connected via the combination device (3) to the second receiver (4

    ) with a frequency tuned to the test frequency, and the reception levels of the second receiver (4

    ) being detected as actual values and being compared to given setpoints to carry out the self-test.

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