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Arrangement for antenna matching

  • US 20020086643A1
  • Filed: 12/20/2001
  • Published: 07/04/2002
  • Est. Priority Date: 12/29/2000
  • Status: Abandoned Application
First Claim
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1. An arrangement for matching impedance of an antenna in a radio apparatus, the arrangement comprising a radio-frequency power amplifier, means for measuring a reflected field, a matching circuit, and a control unit for controlling the matching circuit at least on the basis of the strength of the reflected field, wherein said means for measuring the reflected field comprises an element which separates the reflected field to a separate path and which is connected to an output of the power amplifier in transmission path of a signal to be transmitted.

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