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Modulation identification device

  • US 7,260,156 B2
  • Filed: 06/26/2001
  • Issued: 08/21/2007
  • Est. Priority Date: 06/28/2000
  • Status: Expired due to Fees
First Claim
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1. A modulation identification device having a first input for a modulated RF signal to be identified, a second input for a second RF signal having a frequency essentially corresponding to a carrier frequency of the modulated RF signal and at least one output for a flag indicating a modulation identified, wherein the device comprises:

  • a n-port junction, n being an integer equal to or larger than three, being supplied with the modulated RF signal and the second RF signal and outputting at least one third RF signal to at least one power detector;

    a signal processing unit for processing an output of the power detector to generate the at least one flag; and

    a unit for averaging at least one branch of the output of the power detector over a predetermined number of symbols before the output of the power detector is supplied to the signal processing unit.

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